162 results on '"Kae Jack Tay"'
Search Results
2. Cardio-oncology in advanced prostate cancer
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Kenneth Chen, Ting Hong Wong, Yu Guang Tan, Kae Jack Tay, Wei Chong Tan, Johan Chan, Henry Ho, Christopher Cheng, Jeremy Yuen-Chun Teoh, Peter Ka-Fung Chiu, Hung Jen Wang, Marniza Binti Saad, Ravindran Kanesvaran, You Quan Li, Choon Ta Ng, Jeffrey Kit Loong Tuan, and John Shyi Peng Yuen
- Subjects
androgen deprivation therapy ,advanced prostate cancer ,cardio-oncology ,cardiovascular health ,androgen receptor pathway inhibitors ,abiraterone ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Treatment intensification with androgen deprivation therapy (ADT) and androgen receptor pathway inhibitors (ARPi) have led to improved survival in advanced prostate cancer. However, ADT is linked to significant cardiovascular toxicity, and ARPi also negatively impacts cardiovascular health. Together with a higher prevalence of baseline cardiovascular risk factors reported among prostate cancer survivors at diagnosis, there is a pressing need to prioritise and optimise cardiovascular health in this population. Firstly, While no dedicated cardiovascular toxicity risk calculators are available, other tools such as SCORE2 can be used for baseline cardiovascular risk assessment. Next, selected patients on combination therapy may benefit from de-escalation of ADT to minimise its toxicities while maintaining cancer control. These patients can be characterised by an exceptional PSA response to hormonal treatment, favourable disease characteristics and competing comorbidities that warrant a less aggressive treatment regime. In addition, emerging molecular and genomic biomarkers hold the potential to identify patients who are suited for a de-escalated treatment approach either with ADT or with ARPi. One such biomarker is AR-V7 splice variant that predicts resistance to ARPi. Lastly, optimization of modifiable cardiovascular risk factors for patients through a coherent framework (ABCDE) and exercise therapy is equally important. This article aims to comprehensively review the cardiovascular impact of hormonal manipulation in metastatic hormone-sensitive prostate cancer, propose overarching strategies to mitigate cardiovascular toxicity associated with hormonal treatment, and, most importantly, raise awareness about the detrimental cardiovascular effects inherent in our current management strategies involving hormonal agents.
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- 2024
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- View/download PDF
3. Focal IgG4-related periprostatic 'PI-RADS 5' pseudotumor mimicking prostatic adenocarcinoma
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Zhuyi Rebekah Lee, MBBS, FRCR, Yusheng Keefe Lai, MBBS, FRCR, Logaswari M, MBBS, Li Yan Khor, MBBCh, Kae Jack Tay, MBBS, MRCS (Ed), MMed (Surg), MCI, FAMS (Urology), and Yan Mee Law, MBBS, FRCR
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IgG4-related disease ,IgG4-related periprostatitis ,IgG4-related prostate disease ,Prostate pseudotumor ,MRI prostate ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Immunoglobulin G4-related disease (IgG4-RD) is a systemic fibroinflammatory disease characterized by raised serum IgG4 levels and tumefactive inflammation affecting multiple organ systems, typically involving the pancreas and biliary tree. Though rare, prostatic involvement has been reported in a few cases and is suspected to be an underreported entity. Our patient is a 63-year-old gentleman who has presented with an incidental “PI-RADS 5” (Prostate Imaging Reporting & Data System) prostate lesion and perivascular soft tissue cuffing of the superior rectal vessels on MRI rectum performed for surveillance of rectal neuroendocrine tumor. He had a history of lacrimal gland IgG4-RD. The lentiform prostate lesion subtly indents the prostate capsule, reminiscent of a periprostatic rather than an intraprostatic lesion. Perivascular cuffing of superior rectal vessels suggest inflammatory vasculitis of IgG4-RD. Differential diagnosis of periprostatic inflammatory IgG4-RD was considered, subsequently proven on MRI-ultrasound fusion targeted biopsy. Reported radiological findings of prostate IgG4-RD typically show diffuse chronic inflammation of the prostate, with a minority of the reports describing focal involvement, often mimicking focal prostate adenocarcinoma. Focal periprostatic involvement of IgG4-RD is an unusual manifestation which should be considered in patients with IgG4-RD who present with a periprostatic pseudotumor. IgG4-RD of the prostate usually responds well to steroid treatment without the need for surgery.
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- 2023
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4. A Systematic Review and Meta-Analysis of Mapping Biopsy for Primary Extramammary Paget’s Disease in Reducing Recurrence Following Surgical Excision
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Thirrisha Murugan, Louis Choon Kit Wong, MD, Xing-Yi Sarah Ong, MD, Sze Huey Tan, PhD, Joey Wee-Shan Tan, MSc, Ying Liu, PhD, Nicholas B. Shannon, PhD, MD, Jianbang Chiang, MBBS, MRCP, MMed, Eileen Poon, MBBS, MRCP, MMED, Jason Yongsheng Chan, MBBS, MRCP, MMed, FAMS, PhD, Valerie Shiwen Yang, MB BChir, PhD, MRCP, FAMS, Nagavalli Somasundaram, MBBS, MRCP, MMED, Mohamad Farid, MBBS, MRCP, MMed, Ru Xin Wong, MBBS, FRCR, Wen Long Nei, MBBS, FRCR, Jin Wei Kwek, MBBS, FRCR, FAMS, Choon Hua Thng, MBBS, FRCR, FAMS, Tiffany Hennedige, MBBS, FRCR, MMed, MCI, Po Yin Tang, BMEDSc, MBBS, FRCPath, FRCAPA, Sathiyamoorthy Selvarajan, MBBS, PGDCP, FRCPath, MCS, FAMS, Kae Jack Tay, MBBS, MRCS, MMed, MCI, FAMS, Mohamed Rezal Abdul, MB, BCh, BAO, LRCP&SI, MSurg, Jolene Si Min Wong, MBBS, MMed, FRCS, Chin Jin Seo, MB, BCh, BAO, MMed, FRCS, Khee Chee Soo, MBBS, MD, FRACS, FACS, Claramae Shulyn Chia, MBBS, MMed, FRCS, and Chin-Ann Johnny Ong, MBBS, MMed, FRCS, PhD
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Surgery ,RD1-811 - Abstract
Objective:. To examine the association between the performance of mapping biopsies and surgical outcomes postexcision of extramammary Paget’s disease (EMPD). Background:. Primary EMPD is a rare entity associated with poorly defined surgical margins and difficult-to-access sites of lesions. Surgical resection with clear margins remains the preferred management method. The use of mapping biopsies might be beneficial, particularly in lowering disease recurrence. Methods:. Available literature was reviewed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology before a fixed-effect meta-analysis was performed to identify the presence of a correlation between performing mapping biopsies and positive margins on permanent sections as well as disease-free survival. Additional study results not included in the quantitative assessment were qualitatively assessed and reported. Results:. A total of 12 studies were shortlisted for final analysis. 294 patients who underwent mapping biopsies and 48 patients who did not undergo mapping biopsies were included in the assessment. Forest plot analysis revealed a pooled rate ratio of 0.50 (95% CI, 0.32–0.77) in the prevalence of positive margins in patients with mapping biopsies performed as compared to patients without. The pooled rate ratio of the prevalence of disease-free survival in patients with mapping biopsies performed as compared to patients without was 1.38 (95% CI, 1.03–1.84). Qualitative assessment of the remaining selected studies revealed equivocal results. Conclusions:. Mapping biopsies are able to improve EMPD surgical excision outcomes but given the rarity of the disease and heterogeneity of mapping biopsy procedures, further confirmation with randomized controlled trials or a larger patient pool is necessary.
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- 2023
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5. Surveillance one year post focal cryotherapy for clinically significant prostate cancer using mpMRI and PIRADS v2.1: An initial experience from a prospective phase II mandatory biopsy study
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Jyothirmayi Velaga, Kae Jack Tay, Guanqi Hang, Yu Guang Tan, John SP Yuen, Melvin Chua, Rajan T. Gupta, Thomas J. Polascik, Nye Thane Ngo, and Yan Mee Law
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Prostate ,Prostate cancer ,Multiparametric MRI ,Focal cryotherapy ,Prostate cancer recurrence ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Objectives: Multiparametric magnetic resonance imaging (mpMRI) surveillance post focal cryotherapy (FT) of prostate cancer is challenging as post treatment artefacts alter mpMRI findings. In this initial experience, we assessed diagnostic performance of mpMRI in detecting clinically significant prostate cancer (csPCa) after FT. Materials and methods: This single-centre phase II prospective clinical trial recruited 28 men with localized csPCa for FT between October 2019 and April 2021. 12-months post FT mpMRI were performed prior to biopsy and sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of all mpMRI positive subjects were analysed. Chi square goodness of fit test correlated biopsy positive PIRADS3 (P3) and PIRADS4/5 lesions with histology grade group. One way ANOVA test assessed performance of ADC values in differentiating csPCa, non csPCa and benign lesions. Results: Sensitivity, specificity, PPV and NPV of mpMRI were 100%, 14.28%, 53.84% and 100% for subjects with histologically proven cancer. Correlation of PIRADS v2.1 scores with histologically proven prostate cancer was statistically significant (p
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- 2023
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6. Clinicopathological features of non-conventional renal cell carcinoma histological subtypes: Learning points from a large contemporary series spanning over three decades
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Ee Jean Lim, Khi Yung Fong, Jingqiu Li, Hong Hong Huang, Kenneth Chen, Kae Jack Tay, Christopher Wai Sam Cheng, Henry Sun Sien Ho, Nye Thane Ngo, and John Shyi Peng Yuen
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carcinoma ,renal cell ,epidemiology ,nephrectomy ,retrospective studies ,survival analysis ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Purpose: To perform a retrospective review of the clinicopathological features of patients with conventional and non-conventional renal cell carcinoma (cRCC and ncRCC). Materials and Methods: A large prospectively maintained uro-oncological registry was accessed to extract clinicopathological data of patients diagnosed with renal tumors who subsequently underwent nephrectomy from 1990–2019. Demographics and operative parameters were extracted. Analyses of overall survival (OS) and cancer-specific survival (CSS) were performed using the Kaplan–Meier method. Cox proportional-hazards analysis was used to identify risk factors which influenced survival. Results: There were a total of 1,686 consecutive nephrectomies which was retrieved, with 1,286 cRCC and 400 ncRCC. The commonest ncRCC subtypes were papillary (n=198, 11.7%), clear cell papillary (n=50, 3.0%) and chromophobe (n=49, 2.9%) RCC. Kaplan–Meier estimates of OS were higher in cRCC (0.74; 95% confidence interval [CI], 0.71–0.78) than ncRCC (hazard ratio, 1.47; 95% CI, 1.16–1.87). Among individual subtypes, chromophobe RCC had the highest 5-year OS (0.90; 95% CI, 0.79–1.0). Among ncRCC subtypes, acquired cystic RCC demonstrated the highest association with end-stage renal failure and hypertension, with the highest CSS. MiT family translocation RCC had the youngest mean age at presentation (45.6±12.8 y) and excellent CSS. Factors associated with increased OS in the entire cohort included shorter operative time, partial nephrectomy and lower tumor stages. Conclusions: This study provides a comprehensive contemporary overview of ncRCCs which are yet poorly characterized, in comparison to cRCCs. Data from this study would contribute towards tailored patient counseling and healthcare resource planning.
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- 2022
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7. Cost-effectiveness of MRI targeted biopsy strategies for diagnosing prostate cancer in Singapore
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Li-Jen Cheng, Swee Sung Soon, Teck Wei Tan, Cher Heng Tan, Terence Sey Kiat Lim, Kae Jack Tay, Wei Tim Loke, Bertrand Ang, Edmund Chiong, and Kwong Ng
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Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background To evaluate the cost-effectiveness of six diagnostic strategies involving magnetic resonance imaging (MRI) targeted biopsy for diagnosing prostate cancer in initial and repeat biopsy settings from the Singapore healthcare system perspective. Methods A combined decision tree and Markov model was developed. The starting model population was men with mean age of 65 years referred for a first prostate biopsy due to clinical suspicion of prostate cancer. The six diagnostic strategies were selected for their relevance to local clinical practice. They comprised MRI targeted biopsy following a positive pre-biopsy multiparametric MRI (mpMRI) [Prostate Imaging – Reporting and Data System (PI-RADS) score ≥ 3], systematic biopsy, or saturation biopsy employed in different testing combinations and sequences. Deterministic base case analyses with sensitivity analyses were performed using costs from the healthcare system perspective and quality-adjusted life years (QALY) gained as the outcome measure to yield incremental cost-effectiveness ratios (ICERs). Results Deterministic base case analyses showed that Strategy 1 (MRI targeted biopsy alone), Strategy 2 (MRI targeted biopsy ➔ systematic biopsy), and Strategy 4 (MRI targeted biopsy ➔ systematic biopsy ➔ saturation biopsy) were cost-effective options at a willingness-to-pay (WTP) threshold of US$20,000, with ICERs ranging from US$18,975 to US$19,458. Strategies involving MRI targeted biopsy in the repeat biopsy setting were dominated. Sensitivity analyses found the ICERs were affected mostly by changes to the annual discounting rate and prevalence of prostate cancer in men referred for first biopsy, ranging between US$15,755 to US$23,022. Probabilistic sensitivity analyses confirmed Strategy 1 to be the least costly, and Strategies 2 and 4 being the preferred strategies when WTP thresholds were US$20,000 and US$30,000, respectively. Limitations and conclusions This study found MRI targeted biopsy to be cost-effective in diagnosing prostate cancer in the biopsy-naïve setting in Singapore.
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- 2021
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8. Anterior gland focal cryoablation: proof-of-concept primary prostate cancer treatment in select men with localized anterior cancers detected by multi-parametric magnetic resonance imaging
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Christina Sze, Efrat Tsivian, Kae Jack Tay, Ariel A. Schulman, Leah G. Davis, Rajan T. Gupta, and Thomas J. Polascik
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Focal cryoablation ,Anterior gland ,Prostate cancer ,Erectile function ,Continence ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Abstract Background Due to their location away from the nerve bundles, anterior prostate cancers (APC) represent a rational target for image-guided cryoablation. This report describes the feasibility and short-term outcomes of anterior focal cryosurgery. Methods A retrospective review between 2012 and 2016 of patients with clinically localized APC treated with anterior gland cryoablation was performed. Descriptive statistics were used to report: age, PSA, prostate volume, prostate cancer grade group (PGG), median time to follow-up, and changes in functional status measured with the International Prostate Symptom Score (IPSS) and the International Index of Erectile Function (IIEF-5) score. Results A total of 17 patients underwent anterior focal cryoablation with a median follow-up of 15 months. Median age and PSA at diagnosis were 67 years and 8.7 ng/mL. Pre-operative PGG1 was identified in 12 (71%) men and PGG2 in 5 (29%) men. Median (IQR) lesion volume was 2 mL(0.86, 3.1). Preoperative median IIEF-5 and IPSS scores were 19.5 and 5, and decreased to 19 and 4, post-operatively. All patients remained continent with no change in sexual function. All post-procedure targeted biopsies of the treated cancers were negative. Conclusion Our pilot study demonstrates the feasibility of treating APCs with image-guided targeted focal cryoablation as a good balance between short-term oncologic control and near complete preservation of genitourinary function. Further follow-up is necessary to examine the potential benefits long-term.
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- 2019
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9. 68Gallium-labelled PSMA-PET/CT as a diagnostic and clinical decision-making tool in Asian prostate cancer patients following prostatectomy
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Janice S.H. Tan, Charles X.Y. Goh, Yen Sin Koh, Youquan Li, Jeffrey K.L. Tuan, Eu Tiong Chua, Terence W.K. Tan, Michael L.C. Wang, Lui Shiong Lee, Kae Jack Tay, Ravindran Kanesvaran, Chee Keong Toh, Aaron K.T. Tong, Winnie W.C. Lam, and Melvin L.K. Chua
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68Ga PSMA PET/CT ,prostate cancer ,Asian ,diagnostic ,recurrence ,prostatectomy ,salvage radiotherapy ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Objective Prostate cancers (PCa) in Asian individuals are molecularly distinct from those found in their Caucasian counterparts. There is no risk stratification tool for Asian men with rapid biochemical recurrence (BCR) following radical prostatectomy (RadP). This study aims to assess the detection rate of 68Ga-prostate-specific membrane antigen-positron emission tomography/computed tomography (PSMA-PET/CT) for diagnosis of clinical recurrence and as a treatment decision making tool in Asian patients with BCR post-RadP.Methods 68Ga PSMA-PET and CT body with/without bone scan [conventional workup (CWU)] were performed in 55 Asian patients with BCR within 36 months post-RadP. Two blinded reviewers assessed the images. Detection rates of 68Ga PSMA-PET/CT were evaluated, and impact on management was reviewed by comparison with CWU. Results Median time to BCR post-RadP was 8.1 months. Detection rate for 68Ga PSMA-PET/CT was 80% (44/55). A positive scan was significantly associated with increasing prostate-specific antigen (PSA) level [odds ratio (OR) = 1.13 (95% CI 1.05–1.30), P = 0.017], but not with higher Gleason grade or shorter PSA doubling time. Compared to CWU, 68Ga PSMA-PET/CT detected an additional 106 lesions in 33/44 patients with a positive scan, resulting in a change in management in 25/44 (56.8%) patients: 10 to hormonal therapy (HT) and whole pelvis radiotherapy (RT) in addition to bed RT, and 15 to palliative HT alone. Conclusions In the present report, we demonstrated the diagnostic and treatment decision utility of 68Ga PSMA-PET/CT in Asian men with rapid BCR. Detection of small volume nodal and systemic recurrences at low PSA levels (< 1.0 ng/mL) highlights the role of the tool in assigning patients to treatment intensification with HT-RT or palliative HT in polymetastatic disease.
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- 2019
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10. Local and systemic morbidities of de novo metastatic prostate cancer in Singapore: insight from 685 consecutive patients from a large prospective Uro-oncology registry
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Yu Guang Tan, Kenneth Chen, Leonard Pang, Farhan Khalid, Randy Poon, Hong Hong Huang, Kae Jack Tay, Weber Lau, Christopher Cheng, Henry Ho, and John Yuen
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Medicine - Abstract
ObjectiveTo evaluate the incidence and management of local and systemic complications afflicting patients with de novo metastatic prostate cancer (mPCa) in Singapore.DesignRetrospective analysis of a large prospective Uro-oncology registry of mPCa.SettingThis study is carried out in a tertiary hospital in Singapore.ParticipantsWe reviewed our institution’s prospectively maintained database of 685 patients with mPCa over a 20-year period (1995–2014). Patients with non-mPCa or those progressed to metastatic disease after previous curative local treatments were excluded.Primary and secondary outcome measuresThe primary outcome was to evaluate the systemic and local morbidity rates associated with mPCa. Local complication was defined as the need for palliative procedures to relieve urinary obstruction, worsening renal function or refractory haematuria, while systemic complication was related to radiographic evidence of skeletal-related pathological fractures. Secondary outcomes analysed were the management and overall survival patterns over 20 years.Results237 (34.6%) patients required local palliative treatments. 88 (12.8%) patients presented with acute urinary retention, 23 patients (9.7%) required repetitive local palliative treatments. On multivariate analyses, prostate-specific antigen >100 (p=0.02) and prostate volume >50 g (p=0.03) were independent prognostic factors for significant obstruction requiring palliative procedures. 118 (17.2%) patients developed skeletal fractures, with poor Eastern Cooperative Oncology Group Performance (ECOG) status (p=0.01) and high volume bone metastasis (p
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- 2020
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11. Outcomes of combination MRI-targeted and transperineal template biopsy in restaging low-risk prostate cancer for active surveillance
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Kenneth Chen, Kae Jack Tay, Yan Mee Law, Hakan Aydin, Henry Ho, Christopher Cheng, and John Shyi Peng Yuen
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Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Objective: Active surveillance (AS) offers a strategy to reduce overtreatment and now is a widely accepted treatment option for low-risk prostate cancer. An ideal tool for risk-stratification would detect aggressive cancers and exclude such men from taking up AS in the first place. We evaluate if a combination of transperineal template biopsy with magnetic resonance imaging (MRI)-targeted biopsy identifies significant prostate cancer amongst men initially diagnosed with low-risk prostate cancer. Methods: This prospective, single-blinded study included men with low-risk prostate cancer (D'Amico's Criteria) diagnosed on conventional transrectal ultrasound-guided biopsy. Patients first underwent multiparametric MRI of the prostate ≥6 weeks after initial biopsy. Each suspicious lesion is mapped and assigned a Prostate Imaging Reporting and Data System (PIRADS) score. Template biopsy is first performed with the surgeon blinded to MRI findings followed by MRI-targeted biopsy using a robotic transperineal biopsy platform. Results: The age of the 19 men included is 65.4 ± 4.9 years (mean ± SD). Prostate specific antigen (PSA) at diagnosis and at the time of transperineal biopsy were comparable (7.3 ± 1.7 ng/mL and 7.0 ± 1.8 ng/mL, p = 0.67), so were prostate volumes (34.2 ± 8.9 mL and 32.1 ± 13.4 mL, p = 0.28). MRI-targeted biopsy had a higher percentage of cancer detection per core compared to template biopsy (11.7% vs. 6.5%, p = 0.02), this was more than 3 times superior for Gleason 7 disease (5.9% vs. 1.6%, p
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- 2018
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12. The Minimally Invasive Treatments for Benign Prostrate Hyperplasia
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Yong Wei Lim MBBS, MRCS (Ed), Kae Jack Tay MBBS, MMed (Surg), MRCS (Ed), and Henry Sun Sien Ho MMed (Surg), MRCS (Ed), FAMS (Urology)
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Medicine - Abstract
The prevalence of benign prostatic hyperplasia (BPH) increases with age, affecting more than 50% of men above the age of 50 to varying degrees. As it enlarges, it compresses onto the urethra causing bladder outlet obstruction. This can cause a spectrum of problems ranging from irritative and obstructive lower urinary tract symptoms (LUTS) to retention of urine with obstructive uropathy. Transurethral resection of prostate (TURP) is the standard for surgical intervention, however with the advent of an ageing population, there is an increasing number of patients who have ischaemic heart disease who require long-term anticoagulation and have multiple co-morbidities that put them at an increased risk of general anaesthesia. This review aims to critically appraise the effectiveness and evidence for use of these minimally invasive techniques. Both PubMed and Ovid were used to search for randomised control trials (RCT) comparing the various minimally invasive techniques against TURP. In cases where there were no RCTs, the results of the respective trial were compiled. This was later compiled in a summary table. An effective minimally invasive treatment modality will play a complimentary role to TURP which remains the standard of surgical treatment for BPH. Technologies progressing towards rapid re-creation of prostatic channel, minimal blood loss and non-urethral instrumentation will bridge the divide between pharmacotherapy and surgery.
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- 2014
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13. MP68-07 PROPORTION OF GLEASON 8-10 PROSTATE CANCER FOUND ON BIOPSY AND TUMOR AGGRESSIVENESS IN MATCHED COHORTS OF MEN IN ASIA AND WESTERN COUNTRIES
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Dong, Liang, primary, Lajkosz, Katherine, additional, Sanchez-Salas, Rafael, additional, Tiwari, Raj Vikesh, additional, Dias dos Santos, Caio Pasquali, additional, Dong, Baijun, additional, Pan, Jiahua, additional, Chan, Amy, additional, Woon, Dixon, additional, Kulkarni, Girish S., additional, Perlis, Nathan, additional, Hamilton, Rob, additional, Klotz, Laurence, additional, Wallis, Christopher J. D., additional, Macek, Petr, additional, Kae, Jack Tay, additional, Toi, Ants, additional, Finelli, Antonio, additional, Fleshner, Neil E., additional, Cathelineau, Xavier, additional, van der Kwast, Theodorus H., additional, Xue, Wei, additional, and Zlotta, Alexandre R., additional
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- 2024
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14. Cardio-oncology in advanced prostate cancer.
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Chen, Kenneth, Ting Hong Wong, Yu Guang Tan, Kae Jack Tay, Wei Chong Tan, Johan Chan, Ho, Henry, Cheng, Christopher, Yuen-Chun Teoh, Jeremy, Ka-Fung Chiu, Peter, Hung Jen Wang, Saad, Marniza Binti, Kanesvaran, Ravindran, You Quan Li, Choon Ta Ng, Loong Tuan, Jeffrey Kit, and Shyi Peng Yuen, John
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PROSTATE cancer ,ANDROGEN receptors ,CARDIO-oncology ,CARDIOTOXICITY ,ANDROGEN deprivation therapy ,CARDIOVASCULAR diseases risk factors - Abstract
Treatment intensification with androgen deprivation therapy (ADT) and androgen receptor pathway inhibitors (ARPi) have led to improved survival in advanced prostate cancer. However, ADT is linked to significant cardiovascular toxicity, and ARPi also negatively impacts cardiovascular health. Together with a higher prevalence of baseline cardiovascular risk factors reported among prostate cancer survivors at diagnosis, there is a pressing need to prioritise and optimise cardiovascular health in this population. Firstly, While no dedicated cardiovascular toxicity risk calculators are available, other tools such as SCORE2 can be used for baseline cardiovascular risk assessment. Next, selected patients on combination therapy may benefit from de-escalation of ADT to minimise its toxicities while maintaining cancer control. These patients can be characterised by an exceptional PSA response to hormonal treatment, favourable disease characteristics and competing comorbidities that warrant a less aggressive treatment regime. In addition, emerging molecular and genomic biomarkers hold the potential to identify patients who are suited for a de-escalated treatment approach either with ADT orwith ARPi. One such biomarker is AR-V7 splice variant that predicts resistance to ARPi. Lastly, optimization of modifiable cardiovascular risk factors for patients through a coherent framework (ABCDE) and exercise therapy is equally important. This article aims to comprehensively review the cardiovascular impact of hormonal manipulation inmetastatic hormone-sensitive prostate cancer, propose overarching strategies to mitigate cardiovascular toxicity associated with hormonal treatment, and, most importantly, raise awareness about the detrimental cardiovascular effects inherent in our current management strategies involving hormonal agents. [ABSTRACT FROM AUTHOR]
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- 2024
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15. Patient‐reported functional outcomes and oncological control after primary focal cryotherapy for clinically significant prostate cancer: A Phase II mandatory biopsy‐monitored study
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Yu G. Tan, Yan M. Law, Nye T. Ngo, Li Y. Khor, Puay H. Tan, Enya H. W. Ong, John S. P. Yuen, Henry S. S. Ho, Jeffrey K. L. Tuan, Ravindran Kanesvaran, Rajan T. Gupta, Steven Rozen, Melvin L. K. Chua, Thomas J. Polascik, and Kae Jack Tay
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Oncology ,Urology - Published
- 2023
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16. The role of surgery for loco-regional and advanced urological cancers
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Kit Mun, Chow, Kae Jack, Tay, John, Yuen, and Kenneth, Chen
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Urologic Neoplasms ,Urology ,Palliative Care ,Humans ,Pain Management - Abstract
There is a general misconception that surgery is the antithesis of palliation. However, symptom mitigation, the basic tenet of palliative interventions, can be achieved by invasive procedures. Surgical care, thus, plays an important role in palliative oncology, alongside radiation and systemic therapy. There is global movement to improve palliation in oncology, and thus it is timely to evaluate the role of surgical interventions can play in this setting.Many of the surgical interventions done with palliative intent were first established as curative options. Most studies looked at interventions for local control of primary tumour including extirpative surgeries, while some studies studied pain relief for bone metastases. Results show that patients have an acceptable survival outcome and complication rate comparable to those done in the curative setting. However, not all studies report functional outcomes and symptom-relief consistently, highlighting an unmet need.More studies are needed to further define the role of surgery in palliative care. Randomized controlled trials studying surgical intervention in the palliative setting will be challenging because of lack of equipoise, inherent bias in patient and disease characteristics in those who undergo surgery. Nonetheless, studies should endeavour to study symptom-free survival and PROMs as meaningful endpoints of interventions performed in a palliative setting rather than solely focus on hard oncological endpoints of survival.
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- 2022
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17. <scp>Patient‐reported</scp> outcomes of a phase <scp>II</scp> neoadjuvant apalutamide ( <scp>ARN</scp> ‐509) and radical prostatectomy in treatment of intermediate‐ to <scp>high‐risk</scp> prostate cancer ( <scp>NEAR</scp> ) trial
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Xinyan Yang, John Carson Allen, Edwin Jonathan Aslim, Kae Jack Tay, Shyi Peng John Yuen, Ravindran Kanesvaran, Melvin Lee Kiang Chua, Tsung Wen Chong, Sun Sien Henry Ho, and Lui Shiong Lee
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Urology - Published
- 2022
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18. Focal IgG4-related periprostatic 'PI-RADS 5' pseudotumor mimicking prostatic adenocarcinoma
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Zhuyi Rebekah Lee, Yusheng Keefe Lai, Logaswari M, Li Yan Khor, Kae Jack Tay, and Yan Mee Law
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Radiology, Nuclear Medicine and imaging ,Case Report - Abstract
Immunoglobulin G4-related disease (IgG4-RD) is a systemic fibroinflammatory disease characterized by raised serum IgG4 levels and tumefactive inflammation affecting multiple organ systems, typically involving the pancreas and biliary tree. Though rare, prostatic involvement has been reported in a few cases and is suspected to be an underreported entity. Our patient is a 63-year-old gentleman who has presented with an incidental “PI-RADS 5” (Prostate Imaging Reporting & Data System) prostate lesion and perivascular soft tissue cuffing of the superior rectal vessels on MRI rectum performed for surveillance of rectal neuroendocrine tumor. He had a history of lacrimal gland IgG4-RD. The lentiform prostate lesion subtly indents the prostate capsule, reminiscent of a periprostatic rather than an intraprostatic lesion. Perivascular cuffing of superior rectal vessels suggest inflammatory vasculitis of IgG4-RD. Differential diagnosis of periprostatic inflammatory IgG4-RD was considered, subsequently proven on MRI-ultrasound fusion targeted biopsy. Reported radiological findings of prostate IgG4-RD typically show diffuse chronic inflammation of the prostate, with a minority of the reports describing focal involvement, often mimicking focal prostate adenocarcinoma. Focal periprostatic involvement of IgG4-RD is an unusual manifestation which should be considered in patients with IgG4-RD who present with a periprostatic pseudotumor. IgG4-RD of the prostate usually responds well to steroid treatment without the need for surgery.
- Published
- 2023
19. Head-to-head Comparison of the Diagnostic Accuracy of Prostate-specific Membrane Antigen Positron Emission Tomography and Conventional Imaging Modalities for Initial Staging of Intermediate- to High-risk Prostate Cancer: A Systematic Review and Meta-analysis
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Kit Mun Chow, Wei Zheng So, Han Jie Lee, Alvin Lee, Dominic Wei Ting Yap, Yemisi Takwoingi, Kae Jack Tay, Jeffrey Tuan, Sue Ping Thang, Winnie Lam, John Yuen, Nathan Lawrentschuk, Michael S. Hofman, Declan G. Murphy, and Kenneth Chen
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Urology - Published
- 2023
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20. Prostate boundary segment extraction using cascaded shape regression and optimal surface detection.
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Jierong Cheng, Wei Xiong 0001, Ying Gu, Shue-Ching Chia, Yue Wang 0005, Weimin Huang 0002, Jiayin Zhou, Yufeng Zhou 0001, Wilson Gao, Kae Jack Tay, and Henry Ho
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- 2014
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21. Affordable and underutilized: the paradox of surgical castration
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Rene Gatsinga, Weiren Chen, Kenneth Chen, Kae Jack Tay, John S. P. Yuen, and Yu Guang Tan
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Reproductive Medicine ,Urology - Published
- 2022
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22. Reducing the number of systematic biopsy cores in the era of MRI targeted biopsy—implications on clinically-significant prostate cancer detection and relevance to focal therapy planning
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Alvin Y. M. Lee, Kenneth Chen, Yu Guang Tan, Han Jie Lee, Vipatsorn Shutchaidat, Stephanie Fook-Chong, Christopher W. S. Cheng, Henry S. S. Ho, John S. P. Yuen, Nye Thane Ngo, Yan Mee Law, and Kae Jack Tay
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Male ,Image-Guided Biopsy ,Cancer Research ,Oncology ,Urology ,Prostate ,Humans ,Prostatic Neoplasms ,Magnetic Resonance Imaging ,Retrospective Studies - Abstract
Background The optimal number of systematic biopsy cores in the era of multi-parametric MRI targeted biopsy remains unclear, especially on its impact of focal therapy planning. Our objective is to investigate the impact of reducing the number of systematic cores on prostate cancer detection in the era of MRI-US fusion targeted biopsy and as well as its relevance in template planning for focal therapy. Materials and methods A retrospective analysis of 398 consecutive men who underwent both systematic saturation (~24 cores) and MRI-US fusion targeted biopsy was performed. Four reduced-core systematic biopsy strategies (two-thirds, half, one-third and one-quarter systematic cores) were modelled and the detection rates of clinically-significant prostate cancer (csPCa defined as grade group ≥2) were compared to that of a full systematic biopsy using McNemar’s test. Focal therapy treatment plans were made based on positive cores on combined (targeted and systematic) biopsy and the various reduced-cores strategies to compare the proportion who had a change in treatment plan. Results csPCa was detected in 42% (168/398) of this patient cohort. Non-targeted systematic saturation biopsy had a 21% (83/398) csPCa detection rate. Our four strategies reduced the mean number of non-targeted systematic cores from 21.8 to 14.5, 10.9, 7.3 and 5.4 cores and their csPCa detection rates were significantly decreased to 16%, 13%, 9% and 8% respectively (all p p = 0.0434). Conclusions Reducing the number of systematic biopsies when performing an MRI-targeted biopsy leads to reduced detection of csPCa and alter the treatment plans for focal therapy, possibly limiting its oncological efficacy.
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- 2022
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23. Outcomes and prognostic predictors of Lu‐177 PSMA radioligand therapy in metastatic castration‐resistant prostate cancer (Asian Population Study)
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Wei Ming Chua, Winnie Wing‐Chuen Lam, Aaron Kian‐Ti Tong, Rehena Sultana, Sandra Mei Yu Kua, Ravindran Kanesvaran, Alvin Seng Cheong Wong, Kae Jack Tay, Tai Jit Lenith Cheng, David Chee Eng Ng, and Sue Ping Thang
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Oncology ,General Medicine - Published
- 2023
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24. Incorporating artificial intelligence in urology: Supervised machine learning algorithms demonstrate comparative advantage over nomograms in predicting biochemical recurrence after prostatectomy
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Kae Jack Tay, John Shyi Peng Yuen, Farhan Khalid, Henry S.S. Ho, Yu Guang Tan, Jay K. S. Lim, Hong Hong Huang, Andrew Fang, and Kenneth Chen
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Male ,Biochemical recurrence ,Comparative Effectiveness Research ,medicine.medical_specialty ,Multivariate analysis ,Urology ,medicine.medical_treatment ,Overfitting ,Machine learning ,computer.software_genre ,Risk Assessment ,Artificial Intelligence ,Predictive Value of Tests ,Recurrence ,Interquartile range ,Humans ,Medicine ,Computer Simulation ,Neoplasm Metastasis ,Neoplasm Staging ,Prostatectomy ,business.industry ,Prostatic Neoplasms ,Reproducibility of Results ,Regression analysis ,Middle Aged ,Nomogram ,Prognosis ,Regression ,Nomograms ,Oncology ,Regression Analysis ,Supervised Machine Learning ,Artificial intelligence ,business ,Algorithm ,computer ,Algorithms ,Biomarkers - Abstract
After radical prostatectomy (RP), one-third of patients will experience biochemical recurrence (BCR), which is associated with subsequent metastasis and cancer-specific mortality. We employed machine learning (ML) algorithms to predict BCR after RP, and compare them with traditional regression models and nomograms.Utilizing a prospective Uro-oncology registry, 18 clinicopathological parameters of 1130 consecutive patients who underwent RP (2009-2018) were recorded, yielding over 20,000 data points for analysis. The data set was split into a 70:30 ratio for training and validation. Three ML models: Naïve Bayes (NB), random forest (RF), and support vector machine (SVM) were studied, and compared with traditional regression models and nomograms (Kattan, CAPSURE, John Hopkins [JHH]) to predict BCR at 1, 3, and 5 years.Over a median follow-up of 70.0 months, 176 (15.6%) developed BCR, at a median time of 16.0 months (interquartile range [IQR]: 11.0-26.0). Multivariate analyses demonstrated strongest association of BCR with prostate-specific antigen (PSA) (p: 0.015), positive surgical margins (p 0.001), extraprostatic extension (p: 0.002), seminal vesicle invasion (p: 0.004), and grade group (p 0.001). The 3 ML models demonstrated good prediction of BCR at 1, 3, and 5 years, with the area under curves (AUC) of NB at 0.894, 0.876, and 0.894, RF at 0.846, 0.875, and 0.888, and SVM at 0.835, 0.850, and 0.855, respectively. All models demonstrated (1) robust accuracy (0.82), (2) good calibration with minimal overfitting, (3) longitudinal consistency across the three time points, and (4) inter-model validity. The ML models were comparable to traditional regression analyses (AUC: 0.797, 0.848, and 0.862) and outperformed the three nomograms: Kattan (AUC: 0.815, 0.798, and 0.799), JHH (AUC: 0.820, 0.757, and 0.750) and CAPSURE nomograms (AUC: 0.706, 0.720, and 0.749) (p 0.001).Supervised ML algorithms can deliver accurate performances and outperform nomograms in predicting BCR after RP. This may facilitate tailored care provisions by identifying high-risk patients who will benefit from multimodal therapy.
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- 2021
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25. Staged pelvic exenteration followed by oblique fleur-de-lis rectus abdominis myocutaneous (OFRAM) flap and keystone flap reconstruction for extramammary Paget’s disease
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Kae Jack Tay, Manzhi Wong, Zhao Kai Low, and Claramae Shulyn Chia
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medicine.medical_specialty ,Pelvic floor ,Pelvic exenteration ,business.industry ,medicine.medical_treatment ,Anal canal ,medicine.disease ,Extramammary Paget's disease ,film.actor ,Vulva ,Surgery ,body regions ,Plastic surgery ,medicine.anatomical_structure ,Urethra ,Fleur-de-lis ,film ,medicine ,business - Abstract
Extramammary Paget’s disease (EMPD) is a rare, locally aggressive cutaneous adenocarcinoma which typically involves the anogenital region. The prognosis heavily depends on early diagnosis with definitive surgical treatment. To reduce local recurrence, wide radical resection with margin control and Moh’s micrographic surgery are conventionally recommended. We describe a case of a 65-year-old female with extensive perineal EMPD involving the vulva, vagina, ectocervix, urethra, and anal canal, extending to the sacral region. She required pelvic exenteration and skin resection with 5-cm margins. A rectus abdominis myocutaneous flap (OFRAM) was designed with a fleur-de-lis skin paddle, with the vertical limb extended in an oblique fashion. We name this the OFRAM design and it allows maximal recruitment of abdominal tissue for the reconstruction of massive pelvic defects. The oblique limb obliterated the pelvic floor defect after the pelvic exenteration, while the horizontal limbs were used to resurface the perineal defect. One week later, after formal histology confirmed oncologic clearance, a gluteal keystone flap was used to resurface the remnant posterior defect. We discuss the disease pathology and reconstructive options in such cases. Level of Evidence: Level V, therapeutic study.
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- 2021
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26. Guidelines of guidelines: focal therapy for prostate cancer, is it time for consensus?
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Sean Ong, Kenneth Chen, Jeremy Grummet, John Yaxley, Matthijs J. Scheltema, Phillip Stricker, Kae Jack Tay, and Nathan Lawrentschuk
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Male ,consensus ,prostate carcinoma ,Urology ,focal therapy ,Humans ,Prostatic Neoplasms ,guidelines ,prostate cancer ,United States ,Aged - Abstract
Objective: To provide a summary and discussion of international guidelines, position statements and consensus statements in relation to focal therapy (FT) for prostate cancer (PCa). Methods: The European Association of Urology-European Association of Nuclear Medicine-European Society for Radiotherapy and Oncology-European Society of Urogential Radiology-International Society of Urological Pathology-International Society of Geriatric Oncology and American Urological Association-American Society for Radiation Oncology-Society of Urologic Oncology guidelines were interrogated for recommendations for FT. PubMed and Ovid Medline were searched for consensus statements. Only studies in English since 2015 were included. Reference lists of the included articles were also interrogated and a manual search for studies was also performed. Results: Our results showed a lack of long-term randomised data for FT. International Urological guidelines emphasised the need for more high-quality clinical trials with robust oncological and toxicity outcomes. Consensus and positions statements were heterogenous. Conclusion: A globally accepted guideline for FT planning, technique and follow-up are still yet to be determined. Well-designed studies with long-term follow-up and robust clinical and toxicity endpoints are needed to improve our understanding of FT and create uniform guidelines to streamline management and follow-up.
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- 2022
27. Defining prostate cancer size and treatment margin for focal therapy: does intralesional heterogeneity impact the performance of multiparametric MRI?
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Kae Jack Tay, Yan Mee Law, Yu Xi Terence Law, Nye Thane Ngo, Weber Kam On Lau, Lui Shiong Lee, Edwin Jonathan Aslim, Stephanie Man Chung Fook-Chong, John Shyi Peng Yuen, Christopher Cheng, and Henry Sun Sien Ho
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Male ,#uroonc ,Urology ,medicine.medical_treatment ,#PCSM ,030232 urology & nephrology ,multiparametric MRI ,Tumor ablation ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,focal therapy ,Humans ,Medicine ,Multiparametric Magnetic Resonance Imaging ,high grade ,Aged ,Retrospective Studies ,Prostatectomy ,business.industry ,Prostatic Neoplasms ,Multiparametric MRI ,Cancer ,Histology ,Original Articles ,Middle Aged ,prostate cancer ,medicine.disease ,Tumor Burden ,Focal therapy ,#ProstateCancer ,Tumour size ,cancer size ,030220 oncology & carcinogenesis ,Original Article ,treatment margin ,Neoplasm Grading ,business ,Nuclear medicine - Abstract
Objectives To evaluate the impact of intralesional heterogeneity on the performance of multiparametric magnetic resonance imaging (mpMRI) in determining cancer extent and treatment margins for focal therapy (FT) of prostate cancer. Patients and Methods We identified men who underwent primary radical prostatectomy for organ‐ confined prostate cancer over a 3‐year period. Cancer foci on whole‐mount histology were marked out, coding low‐grade (LG; Gleason 3) and high‐grade (HG; Gleason 4–5) components separately. Measurements of entire tumours were grouped according to intralesional proportion of HG cancer: 0%, 12 mm vs 26% for ≤12 mm) and those containing HG cancer (44%, vs 20% for LG only). Size discrepancy analysis suggests an optimal tumour size of ≤12 mm and treatment margins of 5–6 mm for FT. For tumours ≤12 mm in diameter, applying 5‐ and 6‐mm treatment margins would achieve 98.6% and 100% complete tumour ablation, respectively. For tumours of all sizes, using the same margins would ablate >95% of the HG cancer components. Conclusions Multiparametric MRI performance in estimating prostate cancer size, and consequently the treatment margin for FT, is impacted by tumour size and the intralesional heterogeneity of cancer grades.
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- 2021
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28. Patient-reported outcomes of a phase II neoadjuvant apalutamide (ARN-509) and radical prostatectomy in treatment of intermediate- to high-risk prostate cancer (NEAR) trial
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Xinyan, Yang, John Carson, Allen, Edwin Jonathan, Aslim, Kae Jack, Tay, Shyi Peng John, Yuen, Ravindran, Kanesvaran, Melvin Lee Kiang, Chua, Tsung Wen, Chong, Sun Sien Henry, Ho, and Lui Shiong, Lee
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Male ,Prostatectomy ,Prostate ,Quality of Life ,Humans ,Prostatic Neoplasms ,Patient Reported Outcome Measures ,Neoadjuvant Therapy ,Fatigue - Abstract
The NEAR trial is a single-arm phase II trial investigating the efficacy of neoadjuvant apalutamide and radical prostatectomy in the treatment of D'Amico intermediate- to high-risk prostate cancer. This publication focuses on health-related quality of life (HRQoL) during 12 weeks of neoadjuvant apalutamide treatment.From 2017 to 2019, 30 suitable patients received neoadjuvant apalutamide 240 mg once daily for 12 weeks followed by radical prostatectomy (ClinicalTrials.gov Identifier: NCT03124433). Patient-reported quality of life outcomes was analyzed using European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core Module (EORTC QLQ-C30), EORTC Quality of Life Questionnaire Prostate Module (QLQ-PR25), and Sexual Health Inventory for Men questionnaire (SHIM) at weeks 0,4,12, and 20 of the study.Thirty patients completed 12 weeks of apalutamide therapy and data analyzed for 29 with complete datasets. Neoadjuvant apalutamide therapy was associated with no clinically significant negative impact on patients' global health and QoL scores. Deteriorations in mean scores of functional and symptom scales of QLQ-C30 questionnaire were statistically significant (p = 0.011 and p = 0.008, respectively) but were not clinically meaningful. Patients were also affected by fatigue (p = 0.012), cognitive function (p = 0.038), reduced role functioning (p = 0.025), and lower SHIM scores (p 0.001). Median daily step count reduced from 8228/day to 6001/day per day (p = 0.063), while BMI and body weight reduction were observed (statistically but not clinically significant).During 12 weeks of neoadjuvant apalutamide in organ-confined prostate cancer, the overall patient-reported HRQoL outcomes were maintained, but fatigue and sexual dysfunction were observed in those patients.
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- 2022
29. Multiparametric MRI-ultrasonography software fusion prostate biopsy: initial results using a stereotactic robotic-assisted transperineal prostate biopsy platform comparing systematic vs targeted biopsy
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John Shyi Peng Yuen, Kae Jack Tay, Henry S.S. Ho, Alvin Lee, Yan Mee Law, Christopher Cheng, Kenneth Chen, Weber Kam On Lau, Hong Hong Huang, XinYan Yang, Lui Shiong Lee, and Han Jie Lee
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medicine.medical_specialty ,Prostate biopsy ,medicine.diagnostic_test ,business.industry ,Urology ,030232 urology & nephrology ,Cancer ,medicine.disease ,Targeted biopsy ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,medicine.anatomical_structure ,McNemar's test ,Prostate ,030220 oncology & carcinogenesis ,Cohort ,Biopsy ,medicine ,Radiology ,business - Abstract
OBJECTIVE To compare the detection rates of prostate cancer between systematic biopsy and targeted biopsy using a stereotactic robot-assisted transperineal prostate platform. MATERIALS AND METHODS We identified consecutive patients with suspicious lesion(s) on multiparametric magnetic resonance imaging (mpMRI), who underwent both systematic and MRI-transrectal ultrasonography (US) fusion targeted biopsy using our proprietary transperineal robot-assisted prostate biopsy platform between January 2015 and January 2019 at our institution, for retrospective analysis. Comparative analysis was performed between systematic and targeted biopsy using McNemar's test, and the cohort was further stratified by prior biopsy status and Prostate Imaging Reporting and Data System (PI-RADS) v2.0 score. International Society of Urological Pathology (ISUP) grade group (GG) ≥2 cancers (previously known as Gleason grade ≥7) were considered to be clinically significant. RESULTS A total of 500 patients were included in our final analysis, of whom 67 (13%) were patients with low-risk cancer on active surveillance. Of the 433 patients without prior diagnosis of cancer, 288 (67%) were biopsy-naive. A total of 248 (57%) were diagnosed with prostate cancer, with 199 (46%) having clinically significant prostate cancer (ISUP GG ≥2). There were no statistically significant differences in the overall prostate cancer and clinically significant prostate cancer detection rate between systematic and targeted biopsy (51% vs 49% and 40% vs 38% respectively; P = 0.306 and P = 0.609). Of the 248 prostate cancers detected, 75% (187/248) were detected on both systematic and targeted biopsy, 14% (35/248) were detected on systematic biopsy alone and 11% (26/248) were detected on targeted biopsy alone. Of the 199 clinically significant cancers detected, 69% (138/199) were detected on both systematic and targeted biopsy, 17% (33/199) on systematic biopsy alone and 14% (28/199) on targeted biopsy alone. There were no statistically significant differences in the detection rate between systematic and targeted biopsy for both overall and clinically significant prostate cancer, even when the cohort was stratified by prior biopsy status and PI-RADS score. Targeted biopsy has greater sampling efficiency compared to systematic biopsy for both overall and clinically significant prostate cancer (23.2% vs 9.8%, P < 0.001 and 14.8% vs 5.6%, P < 0.001). CONCLUSIONS Using our robot-assisted transperineal prostate platform, combined MRI-US targeted biopsy with concurrent systematic prostate systematic biopsy probably represents the optimal method for the detection of clinically significant prostate cancer.
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- 2020
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30. Prognostic Significance of Inflammation-associated Blood Cell Markers in Nonmetastatic Clear Cell Renal Cell Carcinoma
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Alvin Lee, Kae Jack Tay, Hong Hong Huang, Soon Phang Allen Sim, Shyi Peng John Yuen, Kenneth Chen, Han Jie Lee, Lui Shiong Lee, and Sun Sien Henry Ho
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Blood Platelets ,Male ,Oncology ,medicine.medical_specialty ,Neutrophils ,Urology ,medicine.medical_treatment ,Lymphocyte ,030232 urology & nephrology ,Nephrectomy ,Monocytes ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Biomarkers, Tumor ,medicine ,Humans ,Lymphocytes ,Stage (cooking) ,Carcinoma, Renal Cell ,Retrospective Studies ,business.industry ,Proportional hazards model ,Hazard ratio ,Red blood cell distribution width ,Middle Aged ,Prognosis ,medicine.disease ,Kidney Neoplasms ,Confidence interval ,Survival Rate ,Clear cell renal cell carcinoma ,medicine.anatomical_structure ,ROC Curve ,030220 oncology & carcinogenesis ,Female ,Inflammation Mediators ,business ,Follow-Up Studies - Abstract
Objectives Our objective was to evaluate the effect of the neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), lymphocyte/monocyte ratio (LMR), and red blood cell distribution width (RDW) on the survival outcomes of nonmetastatic clear cell renal cell carcinoma (ccRCC). Materials and Methods We accessed our single-center, urologic-oncologic registry to extract the data for patients who had undergone nephrectomy for nonmetastatic ccRCC. The optimal cutoff for these markers was determined using X-tile software, and survival analyses using Cox regression were performed. Results A total of 687 patients had undergone nephrectomy. The optimal cutoffs for NLR, PLR, LMR, and RDW were 3.3, 210, 2.4, and 14.3%, respectively. The NLR, PLR, LMR, and RDW were significantly associated with a larger pathologic tumor size, and stage, more aggressive Fuhrman grade, and the presence of tumor necrosis. After adjusting for age, baseline Eastern Cooperative Oncology Group, pathologic tumor and nodal stage, and Fuhrman grade, only PLR remained an independent prognostic marker for both cancer-specific survival (hazard ratio, 2.69; 95% confidence interval, 1.36-5.33; P = .004) and overall survival (hazard ratio, 2.19; 95% confidence interval, 1.36-3.50; P = .001). When the PLR was included with the Leibovich score and University of California, Los Angeles, integrated staging system, the Harrell’s c-index increased from 0.854 to 0.876 and 0.751 to 0.810, respectively, for cancer-specific survival at 5 years after nephrectomy. When risk stratified by the Leibovich risk group and UCLA integrated staging system, PLR was a significant prognostic factor only within the intermediate- to high-risk groups. Conclusions PLR is a robust prognostic marker in nonmetastatic ccRCC that clearly outperforms other inflammatory indexes in those who had undergone nephrectomy. However, its prognostic effect was limited in the low-risk category of ccRCC.
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- 2020
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31. Benefits of robotic cystectomy compared with open cystectomy in an Enhanced Recovery After Surgery program: A propensity‐matched analysis
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Lui Shiong Lee, Kae Jack Tay, John Carson Allen, Hong Hong Huang, and Yu Guang Tan
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medicine.medical_specialty ,Ileus ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Urinary Diversion ,Cystectomy ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Robotic Surgical Procedures ,medicine ,Humans ,Robotic surgery ,Bladder cancer ,business.industry ,Urinary diversion ,Robotics ,Perioperative ,medicine.disease ,Treatment Outcome ,Urinary Bladder Neoplasms ,030220 oncology & carcinogenesis ,Cohort ,Propensity score matching ,Enhanced Recovery After Surgery ,business ,human activities - Abstract
Objectives To compare the perioperative and oncological outcomes between robot-assisted radical cystectomy with intracorporeal urinary diversion versus open cystectomy for bladder cancer in a contemporary Enhanced Recovery After Surgery cohort. Methods All consecutive patients who underwent radical cystectomy and managed under an Enhanced Recovery After Surgery protocol, from December 2013 to October 2018, were reviewed. Propensity score adjustment was carried out to reduce biases attributable to covariate imbalances. Results There were 19 robot-assisted radical cystectomy with intracorporeal urinary diversion and 21 open cystectomy patients. The robot-assisted radical cystectomy with intracorporeal urinary diversion cohort was associated with lower estimated blood loss (397 vs 787 mL, P = 0.05), with a trend toward shorter duration of ileus and postoperative opioid administration. These benefits were apparent, despite a longer operative time (581 vs 446 mins, P = 0.03), a higher proportion of orthotopic bladder reconstruction (26.3 vs 9.5%, P = 0.08), a more prevalent use of neoadjuvant chemotherapy and a higher number of salvage cystectomies for the robot-assisted radical cystectomy with intracorporeal urinary diversion group. Comparable perioperative complications and length of hospital stay were observed. The pathological and intermediate oncological outcomes were similar in both groups (locally advanced disease: 52.6 vs 47.6%, P = 0.85; lymph node yield: 29 vs 34, P = 0.23). The mean recurrence-free survival and overall survival in the robot-assisted radical cystectomy with intracorporeal urinary diversion group was 37.5 and 43.0 months, respectively, compared with 21.4 (P = 0.09) and 35.5 (P = 0.14) months, respectively, in open cystectomy. Conclusion Robot-assisted radical cystectomy with intracorporeal urinary diversion has perioperative benefits of lower estimated blood loss, with a trend toward faster bowel recovery and a shorter duration of opioid analgesia when compared with open cystectomy. Robot-assisted radical cystectomy with intracorporeal urinary diversion also achieves similar intermediate-term oncological and survival outcomes.
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- 2020
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32. Stereotactic robot-assisted transperineal prostate biopsy under local anaesthesia and sedation: moving robotic biopsy from operating theatre to clinic
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Kae Jack Tay, John Shyi Peng Yuen, Alvin Lee, Henry Sun Sien Ho, Weber Kam On Lau, XinYan Yang, Kenneth Chen, Allen Soon Phang Sim, and Yan Mee Law
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Image-Guided Biopsy ,Male ,medicine.medical_specialty ,Prostate biopsy ,Sedation ,Conscious Sedation ,030232 urology & nephrology ,Pilot Projects ,Health Informatics ,Adenocarcinoma ,Ambulatory Care Facilities ,Fentanyl ,Stereotaxic Techniques ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,Robotic Surgical Procedures ,Prostate ,Biopsy ,medicine ,Humans ,Ultrasonography, Interventional ,Aged ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Prostatic Neoplasms ,Middle Aged ,Anus ,medicine.disease ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Feasibility Studies ,Midazolam ,Surgery ,Radiology ,medicine.symptom ,business ,Anesthesia, Local ,medicine.drug - Abstract
This IRB-approved prospective pilot study evaluates the safety and feasibility of performing stereotactic robot-assisted transperineal MRI-US fusion targeted prostate biopsy under local anaesthesia (LA) with sedation. 30 patients who underwent robotic transperineal prostate biopsy between September 2017 and June 2018 were recruited. All biopsies were performed with the iSR’obot Mona Lisa® and BK3000 ultrasound system. Intravenous paracetamol 1 g, with midazolam and fentanyl were given at positioning. After administration of 5 mL of 1%-lidocaine into the perineal skin 2 cm above and lateral to the anus, periapical prostatic block with 10 mL mixture of 1%-Lidocaine and 0.5%-Marcaine was given. The median age of patients was 66 years (range 53–80 years). Median PSA and mean prostate volume were 8.1 ng/ml (range 4.2–20.6 ng/ml) and 40.1 cc (range 18.6–70 cc). 24 (80.0%) patients had targeted prostate biopsy, with median number of targeted cores of 8 (range 5–16). All patients had saturation biopsy and median number of saturation cores was 21 (range 9–48). Mean dose of intravenous midazolam given was 1.5 mg (range 0–5 mg) and intravenous fentanyl was 75 mcg (10–150 mcg). No patient required conversion to GA. Two patients required motion compensation of 3 mm and 7.5 mm, respectively, due minor movement. Immediate post-operative pain score was 0 for all patients. 29 of 30 patients (96.7%) were discharged within 24 h of procedure. There were no immediate severe complications. Adenocarcinoma was detected in 19/30 (63.3%) cases. This pilot feasibility study showed that stereotactic robotic transperineal MRI-US fusion targeted prostate biopsy can be safely and accurately performed under LA with sedation.
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- 2020
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33. Training with New Robots and How to Transition from One System to the Next in Renal Cancer Surgery
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Kenneth Chen, Kae Jack Tay, John Shyi Peng Yuen, and Nathan Lawrentschuk
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- 2022
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34. Efficacy, toxicity, and quality‐of‐life outcomes of ultrahypofractionated radiotherapy in patients with localized prostate cancer: A single‐arm phase 2 trial from Asia
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Janice S. H. Tan, Jonathan Y. H. Teh, Laura L. Y. Tan, Sheena X. F. Tan, You Quan Li, Terence W. K. Tan, Michael L. C. Wang, Ravindran Kanesvaran, Enya H. W. Ong, Kae Jack Tay, Lui Shiong Lee, Jeffrey K. L. Tuan, Daniel Y. H. Tan, and Melvin L. K. Chua
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Male ,Oncology ,Gastrointestinal Diseases ,Quality of Life ,Humans ,Prostatic Neoplasms ,Radiation Dose Hypofractionation ,Dose Fractionation, Radiation ,Radiotherapy, Intensity-Modulated ,General Medicine ,Middle Aged ,Aged - Abstract
Ultra-hypofractionated radiotherapy (UHF-RT) is widely utilized in men with localized prostate cancer (PCa). There are limited data in Asian cohorts. We report the outcomes of a single-arm, phase II trial of UHF-RT from an Asian center.We recruited men with histologically confirmed, nonmetastatic localized PCa. UHF-RT regimens were 36.25 Gy (Cohort A) and 37.5 Gy (Cohort B) delivered in five fractions every other day over 1.5-2.5 weeks. Primary endpoint was physician-scored late genitourinary (GU) and gastrointestinal (GI) adverse events (AEs). Quality-of-life (QoL) was assessed by Expanded Prostate Cancer Index Composite (EPIC) at baseline, 1- and 2-year post-UHF-RT.Between March 2014 and August 2019, 105 men were recruited; four were subsequently excluded from analysis. Median age was 68.0 (Interquartile range (IQR): 63.8-73.0) years. 26 (24.8%) and 68 (64.8%) men had NCCN-defined low-and intermediate-risk PCa, respectively. No late ≥G3 GU or GI toxicities were reported in both cohorts. Peak incidence of acute ≥G2 GU AEs at 14 days post-UHF-RT was 23.6% (17/72) and 24.0% (6/25) in Cohorts A and B, respectively; ≥G2 GI AEs were observed in 9.7% (7/72) and 36.0% (9/25), respectively. Late ≥G2 GU and GI AEs occurred in 4.7% and 3.1% of Cohort A patients, and 5.0% in Cohort B at 12 months, with no AEs at 24 months. EPIC scores changed minimally across all domains. At a median follow-up of 44.9 months, we recorded one (1.3%) biochemical relapse by the Phoenix criteria (Cohort A).UHF-RT is well tolerated in Asian men and can be a recommended fractionation schema for localized PCa.
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- 2021
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35. Laparoscopic sphincter-preserving total pelvic exenteration with transanal total mesorectal excision for locally advanced rectal cancer-A video vignette
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Isaac Seow-En, Yu Guang Tan, and Kae Jack Tay
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medicine.medical_specialty ,Proctectomy ,Pelvic exenteration ,business.industry ,Colorectal cancer ,Rectal Neoplasms ,medicine.medical_treatment ,Gastroenterology ,Locally advanced ,Rectum ,medicine.disease ,Total mesorectal excision ,Surgery ,Pelvic Exenteration ,body regions ,Dissection ,medicine.anatomical_structure ,Pelvic malignancy ,medicine ,Sphincter ,Humans ,Laparoscopy ,business ,Transanal Endoscopic Surgery - Abstract
A total pelvic exenteration (TPE) for advanced pelvic malignancy is a complex undertaking. Minimally invasive approaches have shown success in selected cases with improved outcomes compared to open surgery.The advantages of minimally invasive techniques include enhanced visualisation enabling more precise dissection, smaller wounds with reduced pain and complications resulting in quicker recovery.
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- 2021
36. NEAR trial: A single-arm phase II trial of neoadjuvant apalutamide monotherapy and radical prostatectomy in intermediate- and high-risk prostate cancer
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Lui Shiong Lee, Adelene Y. L. Sim, Chee Wee Ong, Xinyan Yang, Cedric C. Y. Ng, Wei Liu, Vikneswari Rajasegaran, Abner M. S. Lim, Edwin Jonathan Aslim, Nye-Thane Ngo, Li-Yan Khor, Ravindran Kanesvaran, John Carson Jr Allen, Kae Jack Tay, John Shyi Peng Yuen, Tsung Wen Chong, Sun Sien Henry Ho, Bin Tean Teh, and Melvin L. K. Chua
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Male ,Prostatectomy ,Cancer Research ,Oncology ,Receptors, Androgen ,Urology ,Prostate ,Humans ,Prostatic Neoplasms ,Androgen Antagonists ,Prostate-Specific Antigen ,Neoplasm Recurrence, Local ,Neoadjuvant Therapy - Abstract
Objective Treatment efficacy of androgen deprivation therapy with radical prostatectomy for intermediate- to high-risk prostate cancer is less well-studied. The NEAR trial is a single-arm, phase II investigation of neoadjuvant apalutamide monotherapy and radical prostatectomy (RP) in the treatment of D’Amico intermediate- and high-risk prostate cancer (NCT03124433). Materials and methods Patients with histologically-proven, D’Amico intermediate- to high-risk prostate adenocarcinoma received apalutamide 240 mg once-daily for 12 weeks followed by RP + /−lymphadenectomy. Primary outcome was pathological complete response (pCR) rate. Secondary outcomes included rate of biochemical response (defined by PSA Results From 2017 to 2019, 30 patients were recruited, of which 20 and 10 were high and intermediate risk, respectively; 25 completed treatment as per-protocol. We did not observe any pCR on trial; median reduction of cancer burden was 41.7% (IQR: 33.3%–60.0%). 18 out of 25 patients were classified as having a biochemical response (4 did not achieve PSA of N = 16; 53.3%), fatigue (N = 10; 33.3%) and skin rash (N = 9; 30.0%) were the most common adverse events, and there was no major peri-operative complication. We observed an association between tumours of low androgen receptor activity and PAM50 basal status with biochemical non-responders, albeit these molecular phenotypes were not associated with pathological response. Conclusions A 12-week course of neoadjuvant apalutamide prior to RP did not meet the primary endpoint of pCR in this trial. Tumours with low androgen receptor activity or of the PAM50 basal subtype may have a reduced response to apalutamide.
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- 2021
37. Can We Avoid a Systematic Biopsy in Men with PI-RADS
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Alvin, Lee, Kenneth, Chen, and Kae Jack, Tay
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Image-Guided Biopsy ,Male ,Humans ,Prostatic Neoplasms ,Magnetic Resonance Imaging - Published
- 2021
38. Key Steps in the Evaluation and Treatment Planning for Prostate Focal Cryotherapy
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Henry S.S. Ho, Kae Jack Tay, Christopher Cheng, Nye Thane Ngo, Yu Guang Tan, Yan Mee Law, and John Shyi Peng Yuen
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medicine.medical_specialty ,Modalities ,business.industry ,medicine.medical_treatment ,Cryoablation ,Cryotherapy ,medicine.disease ,Focal therapy ,Prostate cancer ,medicine.anatomical_structure ,Prostate ,Ablative case ,medicine ,Radiology ,Radiation treatment planning ,business - Abstract
Introduction: Despite the uptake of focal therapy for prostate cancer in recent years, challenges remain in the identification of all tumor foci and adequacy of ablative modalities, accoun...
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- 2021
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39. MP26-10 CORRELATION OF WHOLE-MOUNT HISTOLOGY WITH FALSE POSITIVES PROSTATE IMAGING REPORTING AND DATA SYSTEMS VERSION 2 CATEGORY 4 AND 5 LESIONS
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Kae Jack Tay, Lui Shiong Lee, Nye Thane Ngo, Yan Mee Law, Edwin Jonathan Aslim, Christopher Cheng, Stephanie Man Chung Fook-Chong, John Shyi Peng Yuen, Weber Kam On Lau, Henry Sun Sien Ho, and Yu Xi Terence Law
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Whole mount ,Correlation ,medicine.medical_specialty ,medicine.anatomical_structure ,Prostate ,business.industry ,Urology ,medicine ,False positive paradox ,Histology ,Radiology ,business ,2-category - Published
- 2021
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40. V14-06 KEY STEPS IN THE EVALUATION AND TREATMENT PLANNING FOR SUCCESSFUL PROSTATE FOCAL CRYOTHERAPY
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Kae Jack Tay, Yan Mee Law, Yu Guang Tan, and John Sp Yuen
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medicine.medical_specialty ,Modalities ,genetic structures ,business.industry ,Urology ,medicine.medical_treatment ,Cryotherapy ,medicine.disease ,Focal therapy ,Prostate cancer ,medicine.anatomical_structure ,Prostate ,Ablative case ,medicine ,Radiology ,Radiation treatment planning ,business - Abstract
INTRODUCTION AND OBJECTIVE:Despite the uptake of Focal Therapy for prostate cancer in recent years, challenges remained in the identification of all tumour foci and adequacy of ablative modalities....
- Published
- 2021
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41. MP60-04 SUPERVISED MACHINE LEARNING ALGORITHMS DEMONSTRATE COMPARATIVE ADVANTAGE OVER NOMOGRAMS IN PREDICTING BIOCHEMICAL RECURRENCE AFTER RADICAL PROSTATECTOMY
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Yu Guang Tan, Kae Jack Tay, John Shyi Peng Yuen, Hong Hong Huang, Kenneth Chen, and Jay K. S. Lim
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Biochemical recurrence ,business.industry ,Prostatectomy ,Urology ,medicine.medical_treatment ,Medicine ,Artificial intelligence ,Nomogram ,Machine learning ,computer.software_genre ,business ,computer - Published
- 2021
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42. Can We Avoid a Systematic Biopsy in Men with PI-RADS ® 5? Letter
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Kae Jack Tay, Alvin Lee, and Kenneth Chen
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PI-RADS ,medicine.medical_specialty ,business.industry ,Urology ,Medicine ,Radiology ,business ,Systematic biopsy - Published
- 2022
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43. Anterior gland focal cryoablation: proof-of-concept primary prostate cancer treatment in select men with localized anterior cancers detected by multi-parametric magnetic resonance imaging
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Efrat Tsivian, Kae Jack Tay, Thomas J. Polascik, Christina Sze, Rajan T. Gupta, Leah G. Davis, and Ariel Schulman
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Male ,medicine.medical_specialty ,Anterior gland ,Urology ,medicine.medical_treatment ,Erectile function ,030232 urology & nephrology ,Pilot Projects ,lcsh:RC870-923 ,Cryosurgery ,Proof of Concept Study ,Focal cryoablation ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,Prostate ,Continence ,medicine ,Humans ,Aged ,Retrospective Studies ,medicine.diagnostic_test ,Genitourinary system ,business.industry ,Penile Erection ,Age Factors ,Prostatic Neoplasms ,Magnetic resonance imaging ,Cryoablation ,General Medicine ,Prostate-Specific Antigen ,medicine.disease ,lcsh:Diseases of the genitourinary system. Urology ,Magnetic Resonance Imaging ,Tumor Burden ,medicine.anatomical_structure ,Treatment Outcome ,Reproductive Medicine ,030220 oncology & carcinogenesis ,Feasibility Studies ,International Prostate Symptom Score ,Radiology ,Neoplasm Grading ,Sexual function ,business ,Research Article - Abstract
Background Due to their location away from the nerve bundles, anterior prostate cancers (APC) represent a rational target for image-guided cryoablation. This report describes the feasibility and short-term outcomes of anterior focal cryosurgery. Methods A retrospective review between 2012 and 2016 of patients with clinically localized APC treated with anterior gland cryoablation was performed. Descriptive statistics were used to report: age, PSA, prostate volume, prostate cancer grade group (PGG), median time to follow-up, and changes in functional status measured with the International Prostate Symptom Score (IPSS) and the International Index of Erectile Function (IIEF-5) score. Results A total of 17 patients underwent anterior focal cryoablation with a median follow-up of 15 months. Median age and PSA at diagnosis were 67 years and 8.7 ng/mL. Pre-operative PGG1 was identified in 12 (71%) men and PGG2 in 5 (29%) men. Median (IQR) lesion volume was 2 mL(0.86, 3.1). Preoperative median IIEF-5 and IPSS scores were 19.5 and 5, and decreased to 19 and 4, post-operatively. All patients remained continent with no change in sexual function. All post-procedure targeted biopsies of the treated cancers were negative. Conclusion Our pilot study demonstrates the feasibility of treating APCs with image-guided targeted focal cryoablation as a good balance between short-term oncologic control and near complete preservation of genitourinary function. Further follow-up is necessary to examine the potential benefits long-term.
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- 2019
44. Influence of African American race on the association between preoperative biopsy grade group and adverse histopathologic features of radical prostatectomy
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Christopher L. Amling, Martha K. Terris, Alireza Aminsharifi, Thomas J. Polascik, Kae Jack Tay, William J. Aronson, Stephen J. Freedland, Ariel Schulman, Lauren E. Howard, Matthew R. Cooperberg, and Christopher J. Kane
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Male ,Cancer Research ,medicine.medical_specialty ,Biopsy ,medicine.medical_treatment ,Logistic regression ,Gastroenterology ,Odds ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,Internal medicine ,Preoperative Care ,Humans ,Medicine ,030212 general & internal medicine ,Aged ,Prostatectomy ,African american ,medicine.diagnostic_test ,business.industry ,Margins of Excision ,Prostatic Neoplasms ,Seminal Vesicles ,Middle Aged ,Prostate-Specific Antigen ,medicine.disease ,Black or African American ,Oncology ,Lymphatic Metastasis ,030220 oncology & carcinogenesis ,Preoperative biopsy ,Lymph ,business - Abstract
The current study was performed to evaluate the influence of race on the association between biopsy grade group (GrGp) and the risk of detectable prostate-specific antigen (PSA) and adverse histopathological outcomes after radical prostatectomy (RP).Data regarding 4073 men (1344 African American men; 33%) who were treated with RP were categorized based on the 5-tiered GrGp system. Logistic regression was used to test the association between biopsy GrGp and PSA nadir (0.1 ng/mL) after RP as well as adverse pathological features among all patients and stratified by race.Those patients with a higher biopsy GrGp were found to have lower odds of achieving a PSA nadir0.1 ng/mL after RP on unadjusted and multivariable analysis (both P .001). On unadjusted and multivariable analysis, higher GrGp was associated with increased odds of each of the adverse pathological features, namely, GrGp ≥3, extraprostatic extension, seminal vesicle invasion, positive surgical resection margin, and positive lymph nodes (all P .001). Race had no significant interaction with biopsy GrGp in the prediction of PSA nadir after RP (P = .91) or any adverse pathological features (all P .06) except positive lymph nodes. When the models were stratified by race, the associations between preoperative biopsy GrGp and having a PSA nadir0.1 ng/mL, high-grade final pathology, or other adverse histopathologic features were similar in both races except as noted for positive lymph nodes.Higher preoperative biopsy GrGp is associated with increased odds of adverse histopathological findings as well as lower odds of a PSA nadir0.1 ng/mL after RP. These associations are largely independent of race, suggesting that GrGp is an accurate tool for risk stratification in both black and white men.
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- 2019
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45. Evolving trends in the surgical management of renal masses over the past two decades: A contemporary picture from a large prospectively‐maintained database
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Henry Sun Sien Ho, Kae Jack Tay, John Shyi Peng Yuen, Hong Hong Huang, Christopher Cheng, Kenneth Chen, Allen Soon Phang Sim, Alvin Lee, Lay Guat Ng, and Lui Shiong Lee
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Male ,medicine.medical_specialty ,Time Factors ,Databases, Factual ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Renal function ,Kaplan-Meier Estimate ,Hospitals, General ,Logistic regression ,Nephrectomy ,Asymptomatic ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,medicine ,Overall survival ,Humans ,Minimally Invasive Surgical Procedures ,Prospective Studies ,Registries ,Practice Patterns, Physicians' ,Renal Insufficiency, Chronic ,General hospital ,Aged ,Neoplasm Staging ,Singapore ,Proportional hazards model ,business.industry ,Nephrons ,Middle Aged ,medicine.disease ,Kidney Neoplasms ,Surgery ,Treatment Outcome ,030220 oncology & carcinogenesis ,Disease Progression ,Female ,medicine.symptom ,business ,Organ Sparing Treatments ,Glomerular Filtration Rate ,Kidney disease - Abstract
OBJECTIVES To investigate the trends in the presentation and surgical management of renal tumors at Singapore General Hospital, Singapore. METHODS We accessed our uro-oncological registry to extract the clinicopathological data of patients with renal tumors who underwent nephrectomy from 2000 to 2015. Binary logistic regression was used to identify predictors of nephron-sparing surgery utilization, Clavien-Dindo grade ≥III complications and progression to stage ≥3 chronic kidney disease. Cox regression models were created to evaluate the proportional hazards of the risk factors for overall survival and cancer-specific survival. RESULTS A total of 1208 cases of nephrectomy were carried out between 2000 and 2015. The proportion of cT1a tumors increased from 2000-2004 to 2010-2015, which was accompanied by the doubling of utilization rates of nephron-sparing surgery and minimally invasive surgery. Charlson Comorbidity Index score
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- 2019
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46. The Benefit of Robotic Surgery in Postradiorecurrent Invasive Bladder Cancer
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Lui Shiong Lee, Raj Vikesh Tiwari, Kae Jack Tay, and Daanesh Huned
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Radiation therapy ,Cystectomy ,medicine.medical_specialty ,Bladder cancer ,business.industry ,medicine.medical_treatment ,Materials Chemistry ,medicine ,Robotic surgery ,medicine.disease ,business ,Surgery - Abstract
Introduction: Recurrence of invasive bladder cancer after radiation therapy poses a surgical challenge with significant morbidity described for salvage cystectomy cases. This video present...
- Published
- 2021
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47. Focal therapy for prostate cancer-ready to be a standard of care?
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Kae Jack, Tay
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Ablation Techniques ,Male ,Prostate ,Humans ,Prostatic Neoplasms ,Standard of Care - Published
- 2021
48. Biomarkers for Precision Urothelial Carcinoma Diagnosis: Current Approaches and the Application of Single-Cell Technologies
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George He, A. Low, Tong Seng Lim, Siting Goh, Li Yan Khor, Tony Kiat Hon Lim, Michelle Hong, Kae Jack Tay, and Joe Yeong
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0301 basic medicine ,Oncology ,Cancer Research ,medicine.medical_specialty ,non-invasive ,Review ,circulating tumor cells ,Malignancy ,lcsh:RC254-282 ,03 medical and health sciences ,0302 clinical medicine ,Circulating tumor cell ,Internal medicine ,medicine ,diagnostics ,cystoscopy ,Biomarker discovery ,urothelial carcinoma ,Bladder cancer ,medicine.diagnostic_test ,business.industry ,Cancer ,Gold standard (test) ,Cystoscopy ,medicine.disease ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,single cell ,030104 developmental biology ,030220 oncology & carcinogenesis ,cytology ,Biomarker (medicine) ,biomarker ,business - Abstract
Simple Summary Urothelial carcinoma (UC) is the most frequently diagnosed cancer of the urinary tract and is ranked the sixth most diagnosed cancer in men worldwide. About 70–75% of newly diagnosed UCs are non-invasive or low grade. Different tests such as urine cytology and cystoscopy are used to detect UC. If abnormal tissue is found during cystoscopy, then a biopsy will be performed. Cytology has low sensitivity for low-grade cancer while cystoscopy is invasive and costly. Detecting UC early improves the chances of treatment success. Therefore, many researchers have painstakingly identified urine biological markers for non-invasive UC diagnosis. In this review, we summarize some of the latest and most promising biological markers (including FDA-approved and investigational markers). We also discuss some new technologies that can aid research efforts in biological marker discovery for early UC detection. Abstract Urothelial carcinoma (UC) is the most frequent malignancy of the urinary system and is ranked the sixth most diagnosed cancer in men worldwide. Around 70–75% of newly diagnosed UC manifests as the non-muscle invasive bladder cancer (NMIBC) subtype, which can be treated by a transurethral resection of the tumor. However, patients require life-long monitoring due to its high rate of recurrence. The current gold standard for UC diagnosis, prognosis, and disease surveillance relies on a combination of cytology and cystoscopy, which is invasive, costly, and associated with comorbidities. Hence, there is considerable interest in the development of highly specific and sensitive urinary biomarkers for the non-invasive early detection of UC. In this review, we assess the performance of current diagnostic assays for UC and highlight some of the most promising biomarkers investigated to date. We also highlight some of the recent advances in single-cell technologies that may offer a paradigm shift in the field of UC biomarker discovery and precision diagnostics.
- Published
- 2021
49. Utilization of focal therapy for patients discontinuing active surveillance of prostate cancer: Recommendations of an international Delphi consensus
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Wei Phin Tan, Ardeshir R. Rastinehad, Laurence Klotz, Peter R. Carroll, Mark Emberton, John F. Feller, Arvin K. George, Inderbir S. Gill, Rajan T. Gupta, Aaron E. Katz, Amir H. Lebastchi, Leonard S. Marks, Giancarlo Marra, Peter A. Pinto, Daniel Y. Song, Abhinav Sidana, John F. Ward, Rafael Sanchez-Salas, Jean de la Rosette, Thomas J Polascik, Aaron Katz, Alireza Aminsharifi, Amir Lebastchi, Andre Abreu, Arnauld Villers, Ariel Schulman, Ardeshir Rastinehad, Arvin George, Aytekin Oto, Baris Turkbey, Bernard Malavaud, Berrend Muller, Caroline Moore, Daniel Eberli, Daniel Margolis, Daniel Song, Derek Lomas, Hazem Orabi, Herbert Lepor, Hui Meng Tan, Ivan Jambor, Jeremy Grummet, John Feller, John Ward, Jonathan Colemen, Justin Gregg, Kae Jack Tay, Leonard Marks, Leslie Deane, M. Pilar Laguna, Masaki Kimura, Matvey Tsivian, Michael Gorin, Minhaj Siddiqui, Osamu Ukimura, Paolo Gontero, Peter Carroll, Peter Pinto, Pierre Mozer, Rajan T Gupta, Ro Arcot, Samir Taneja, Sangeet Ghai, Sebastian Crouzet, Sherif Mehralivand, Steven Joniau, Sunao Shoji, Takumi Shiraishi, Thomas Polascik, Toshitaka Shin, Uri Lindnet, Varaha Tammisetti, Willemien van den Bos, Yoh Matsuoka, University of Zurich, and Polascik, Thomas J
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Ablation Techniques ,Male ,Delphi Technique ,030232 urology & nephrology ,Active surveillance ,Prostate cancer ,0302 clinical medicine ,80 and over ,computer.programming_language ,Cancer ,Aged, 80 and over ,Prostate Cancer ,Urology & Nephrology ,Middle Aged ,Oncology ,030220 oncology & carcinogenesis ,Respondent ,2730 Oncology ,2748 Urology ,Urologic Diseases ,medicine.medical_specialty ,Consensus ,Urology ,Oncology and Carcinogenesis ,Partial gland ablation ,Active surveillance of prostate cancer ,610 Medicine & health ,Article ,Focal Therapy Group Authors ,03 medical and health sciences ,Clinical Research ,Focal therapy ,Radiation oncology ,medicine ,Humans ,Radical therapy ,Watchful Waiting ,Aged ,Localized prostate cancer ,business.industry ,Prostatic Neoplasms ,medicine.disease ,10062 Urological Clinic ,Family medicine ,Imaging technology ,business ,computer ,Delphi - Abstract
Background: With the advancement of imaging technology, focal therapy (FT) has been gaining acceptance for the treatment of select patients with localized prostate cancer (CaP). We aim to provide details of a formal physician consensus on the utilization of FT for patients with CaP who are discontinuing active surveillance (AS). Methods: A 3-stage Delphi consensus on CaP and FT was conducted. Consensus was defined as agreement by >= 80% of physicians. An in-person meeting was attended by 17 panelists to formulate the consensus statement. Results: Fifty-six respondents participated in this interdisciplinary consensus study (82% urologist, 16% radiologist, 2% radiation oncology). The participants confirmed that there is a role for FT in men discontinuing AS (48% strongly agree, 39% agree). The benefit of FT over radical therapy for men coming off AS is: less invasive (91%), has a greater likelihood to preserve erectile function (91%), has a greater likelihood to preserve urinary continence (91%), has fewer side effects (86%), and has early recovery post-treatment (80%). Patients will need to undergo mpMRI of the prostate and/or a saturation biopsy to determine if they are potential candidates for FT. Our limitations include respondent's biases and that the participants of this consensus may not represent the larger medical community. Conclusions: FT can be offered to men coming off AS between the age of 60 to 80 with grade group 2 localized cancer. This consensus from a multidisciplinary, multi-institutional, international expert panel provides a contemporary insight utilizing FT for CaP in select patients who are discontinuing AS. United States Department of Health & Human Services National Institutes of Health (NIH) - USA ; European Urological Scholarship Programme (EUSP)
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- 2021
50. A compact method for prostate zonal segmentation on multiparametric MRIs.
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Y. Chi, Henry Ho, Y. M. Law, Q. Tian, H. J. Chen, Kae Jack Tay, and J. Liu
- Published
- 2014
- Full Text
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