175 results on '"Michael H. Johnson"'
Search Results
2. Management of advanced adenocarcinoma in Indiana Pouch urinary diversion
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Michael A. Bell, Edward J. Wright, Sandy H. Fang, Michael H. Johnson, and Nikolai A. Sopko
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Adenocarcinoma ,Indiana Pouch ,High microsatellite instability ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Adenocarcinoma is a rare finding following urinary diversion with gastrointestinal segments. This report describes an 80-year-old woman with a history of bladder cancer who subsequently developed a pT4 adenocarcinoma 8 years following her radical cystectomy and Indiana Pouch continent urinary diversion. An en bloc resection of the pouch and affected small bowel was performed and the patient underwent conversion to an ileal conduit diversion. We use this case to highlight a mechanism for possible pathogenesis and the management of adenocarcinoma in urinary diversions including the need for regular surveillance and the surgical approach.
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- 2018
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3. Bladder melanosis with concurrent urothelial carcinoma
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Susanna E. Yau, Eric J. Singer, Yue Sun, and Michael H. Johnson
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Diseases of the genitourinary system. Urology ,RC870-923 - Published
- 2017
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4. Stromal Tumor of Uncertain Malignant Potential (STUMP) With PSA >500 ng/ml: A Case Report
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Michael H. Johnson and H. Ballentine Carter
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STUMP ,Prostate ,Elevated PSA ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Stromal tumors of uncertain malignant potential (STUMP) are rare diagnoses in the evaluation of elevated PSA. The management of STUMP in the setting of an elevated PSA is challenging, as STUMP may have a benign clinical course. In this report, we describe a patient who was found to have a PSA >500 ng/ml and a large STUMP. We review the critical findings and review the relevant literature on diagnosis and management strategies for patients with STUMP.
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- 2015
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5. Iatrogenic Extraprostatic Extension of Prostate Cancer From a Needle Biopsy
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Michael H. Johnson, Francesca Khani, and Edward M. Schaeffer
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Prostate cancer ,Biopsy ,Extraprostatic extension ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Seeding of prostate cancer along a needle biopsy track is a rare complication. The diagnosis of this presents a significant upstaging of the disease and profound potential changes to the treatment strategy. In this report, we present a 71 year-old male with otherwise low-risk prostate cancer on final pathology except for extraprostatic extension (EPE) along a probable needle track. We further review the relevant literature regarding this rare but important complication with prostate needle biopsy.
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- 2015
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6. Diagnosing and Treating Inflammatory Myofibroblastic Tumor of the Bladder
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Ridwan Alam, Michael H. Johnson, Trevor Caldwell, Christian P. Pavlovich, Trinity J. Bivalacqua, and Jeffrey J. Tosoian
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Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Inflammatory myofibroblastic tumor (IMT) is an uncommon condition that is rarely encountered in the urinary tract. In this report, we present a case of IMT of the bladder in a woman with multiple previous pelvic surgeries. We further review the relevant literature to highlight this rare but important clinical presentation.
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- 2016
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7. Epithelioid Angiomyolipoma in a Pediatric Patient: Case Report and Review of Literature
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Michael H. Johnson, Joseph B. Song, Louis P. Dehner, and Robert Sherburne Figenshau
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Tuberous sclerosis complex ,Kidney ,Angiomyolipoma ,Epithelioid angiomyolipoma ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
We report a case of a 17-year-old girl with tuberous sclerosis complex who underwent partial nephrectomy for a newly discovered 7.5-cm renal mass subsequently determined to be an epithelioid angiomyolipoma, a rare variant of angiomyolipoma that can be confused clinically, radiographically, and pathologically for renal cell carcinoma. Proper diagnosis and treatment are critical, especially in the pediatric patient. This case report and review of literature serve at increasing the awareness of this renal tumor, with its somewhat unpredictable outcome, reviewing the pertinent literature on the topic of epithelioid angiomyolipoma in the clinical setting of tuberous sclerosis complex.
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- 2014
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8. Malignant and Metastatic Pheochromocytoma: Case Report and Review of the Literature
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Michael H. Johnson, Jaime A. Cavallo, and R. Sherburne Figenshau
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Pheochromocytoma ,Neuroendocrine ,Adrenal ,Renal ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Pheochromocytomas are rare neuroendocrine tumors. Although predominantly occurring in the adrenal glands, these tumors can present anywhere along the sympathetic chain. Indeed, classical teaching states that 10% of pheochromocytomas are extra-adrenal and 10% are malignant. We report a case of a 61-year-old female who underwent presumptive cytoreductive nephrectomy and adrenalectomy for renal carcinoma but was instead found to have malignant pheochromocytoma. Proper identification, surgical extirpation, and follow-up are imperative for treatment. We review the classic and current literature regarding management of this uncommon tumor.
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- 2014
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9. Seminoma Presenting as Renal Mass, Inferior Vena Caval Thrombus, and Regressed Testicular Mass
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Valary T. Raup, Michael H. Johnson, Jonathan R. Weese, Ian S. Hagemann, Stephen D. Marshall, and Steven B. Brandes
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Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Testicular cancer is the most common malignancy of men aged 15–40. Metastatic spread classically begins with involvement of the retroperitoneal lymph nodes, with metastases to the liver, lung, bone, and brain representing advancing disease. Treatment is based on pathologic analysis of the excised testicle and presence of elevated tumor markers. We report a case of a 34-year-old male presenting with back pain who was found to have a right renal mass with tumor extension into the inferior vena cava. Subsequent biopsy was consistent with seminoma. We review this rare case and discuss the literature regarding its diagnosis and management.
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- 2015
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10. Validation of microarray image analysis accuracy
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Bruz Marzolf and Michael H. Johnson
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Biology (General) ,QH301-705.5 - Published
- 2004
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11. Distant Metastases From a Small Renal Cell Carcinoma: A Case Report
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Ridwan Alam, Jeffrey J. Tosoian, Phillip M. Pierorazio, and Michael H. Johnson
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Renal cell carcinoma ,Small renal mass ,Distant metastasis ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Renal cell carcinoma (RCC) less than 3 cm in diameter rarely metastasizes. In this report, we present the case of a metastatic RCC in which the primary tumor was 1.6 cm. We further review the relevant literature to highlight this rare but important clinical presentation.
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- 2016
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12. Consensus Guidelines for CSF and Blood Biobanking for CNS Biomarker Studies
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Charlotte E. Teunissen, Hayrettin Tumani, Jeffrey L. Bennett, Frode S. Berven, Lou Brundin, Manuel Comabella, Diego Franciotta, Jette L. Federiksen, John O. Fleming, Roberto Furlan, Rogier Q. Hintzen, Steve G. Hughes, Connie R. Jimenez, Michael H. Johnson, Joep Killestein, Eva Krasulova, Jens Kuhle, Maria-Chiara Magnone, Axel Petzold, Cecilia Rajda, Konrad Rejdak, Hollie K. Schmidt, Vincent van Pesch, Emmanuelle Waubant, Christian Wolf, Florian Deisenhammer, Gavin Giovannoni, and Bernhard Hemmer
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Neurology. Diseases of the nervous system ,RC346-429 - Abstract
There is a long history of research into body fluid biomarkers in neurodegenerative and neuroinflammatory diseases. However, only a few biomarkers in cerebrospinal fluid (CSF) are being used in clinical practice. Anti-aquaporin-4 antibodies in serum are currently useful for the diagnosis of neuromyelitis optica (NMO), but we could expect novel CSF biomarkers that help define prognosis and response to treatment for this disease. One of the most critical factors in biomarker research is the inadequate powering of studies performed by single centers. Collaboration between investigators is needed to establish large biobanks of well-defined samples. A key issue in collaboration is to establish standardized protocols for biobanking to ensure that the statistical power gained by increasing the numbers of CSF samples is not compromised by pre-analytical factors. Here, consensus guidelines for CSF collection and biobanking are presented, based on the guidelines that have been published by the BioMS-eu network for CSF biomarker research. We focussed on CSF collection procedures, pre-analytical factors and high quality clinical and paraclinical information. Importantly, the biobanking protocols are applicable for CSF biobanks for research targeting any neurological disease.
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- 2011
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13. Understanding Psychosocial and Sexual Health Concerns Among Women With Bladder Cancer Undergoing Radical Cystectomy
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Jean H. Hoffman-Censits, Sarah E. Van Pilsum Rasmussen, Michael H. Johnson, Phillip M. Pierorazio, Natasha Gupta, Trinity J. Bivalacqua, Armine K. Smith, and Nora M. Haney
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Urology ,medicine.medical_treatment ,Female sexual dysfunction ,030232 urology & nephrology ,MEDLINE ,Cystectomy ,Psychological Distress ,Interviews as Topic ,03 medical and health sciences ,0302 clinical medicine ,Body Image ,Humans ,Medicine ,Sexual Dysfunctions, Psychological ,Aged ,Reproductive health ,business.industry ,Focus Groups ,medicine.disease ,Focus group ,Sexual Dysfunction, Physiological ,Urinary Bladder Neoplasms ,030220 oncology & carcinogenesis ,Cohort ,Female ,Sexual Health ,Sexual function ,business ,Psychosocial ,Clinical psychology - Abstract
Objective To better understand the physical and psychosocial components of female sexual dysfunction (FSD) among women undergoing radical cystectomy (RC) for bladder cancer (BCa). Methods We conducted semistructured individual interviews and a focus group with pre- and post-RC female patients and their partners regarding the impact of RC on sexual health and psychosocial wellbeing. Themes were inductively identified by 2 independent coders and subsequently organized into themes and subthemes using qualitative description and constant comparison. Results In the preoperative cohort, 6 women and 1 partner participated (50% contact rate, 75% participation rate). In the postoperative cohort, 16 women and 2 partners participated (61% contact rate, 64% participation rate). Major themes that emerged in interviews with both cohorts included concerns about changes to body image, the psychological impact of BCa diagnosis and treatment, concerns about the impact of RC on sexual function, and inadequacies in provider-led sexual health counseling. Participants varied in the importance they placed on sexual function, with factors such as age, relationship status, and oncologic concerns impacting prioritization, although both younger and older patients expressed a desire to retain the option of sexual function. Conclusion Female patients with BCa undergoing RC experience changes in body image, psychological distress, physical disruptions in sexual function, and inadequacies in sexual health counseling and education. Future efforts should be directed towards improving sexual health counseling and psychosocial support resources for women with BCa.
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- 2021
14. Circulating Tumor Cell and Circulating Tumor DNA Assays Reveal Complementary Information for Patients with Metastatic Urothelial Cancer
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Andres Matoso, Liang Dong, Stephanie Glavaris, Megan H. Fong, Trinity J. Bivalacqua, Heather J. Chalfin, Noah M. Hahn, Kenneth J. Pienta, Max Kates, Michael H. Johnson, David J. McConkey, and Michael A. Gorin
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Somatic cell ,Urology ,030232 urology & nephrology ,Pilot Projects ,medicine.disease_cause ,Circulating Tumor DNA ,03 medical and health sciences ,Cytokeratin ,0302 clinical medicine ,Circulating tumor cell ,Biomarkers, Tumor ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Liquid biopsy ,Carcinoma, Transitional Cell ,Mutation ,Bladder cancer ,business.industry ,Cancer ,Neoplastic Cells, Circulating ,medicine.disease ,Minimal residual disease ,Urinary Bladder Neoplasms ,Oncology ,030220 oncology & carcinogenesis ,Cancer research ,Surgery ,business - Abstract
Despite considerable advances in the management of urothelial carcinoma (UC), better risk stratification and enhanced detection of minimal residual disease are still urgent priorities to prolong survival while avoiding the morbidity of overtreatment. Circulating tumor cells and DNA (CTCs, ctDNA) are two biologically distinct "liquid biopsies" that may potentially address this need, although they have been understudied in UC to date and their relative utility is unknown. To this end, matched CTC and ctDNA samples were collected for a head-to-head comparison in a pilot study of 16 patients with metastatic UC. CTCs were defined as cytokeratin- and/or EpCAM-positive using the RareCyte direct imaging platform. ctDNA was assayed using the PlasmaSelect64 probe-capture assay. 75% of patients had detectable CTCs, and 73% had detectable somatic mutations, with no correlation between CTC count and ctDNA. 91% of patients had tissue confirmation of at least one plasma mutation and, importantly, several clinically actionable mutations were detected in plasma that were not found in the matching tumor. A ctDNA fraction of >2% was significantly associated with worse overall survival (p=0.039) whereas CTC detection was not (p=0.46). Notably, using a predefined gene panel for ctDNA detection had a high but not complete detection rate in metastatic UC, similar to what has been described for a custom tissue-personalized assay approach. In sum, both liquid biopsies show promise in UC and deserve further investigation. PATIENT SUMMARY: New "liquid biopsy" blood tests are emerging for urothelial cancer aimed at early detection and avoiding overtreatment. Our results suggest that two such tests provide complementary information: circulating tumor cells may be best for studying the biological features of a person's cancer, whereas circulating tumor DNA may be better for early detection.
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- 2021
15. Clinical Restaging and Tumor Sequencing are Inaccurate Indicators of Response to Neoadjuvant Chemotherapy for Muscle-invasive Bladder Cancer
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Kelly T. Harris, Michael H. Johnson, Woonyoung Choi, Trinity J. Bivalacqua, Adam C. Reese, Russell E.N. Becker, Jean H. Hoffman-Censits, Alexander S. Baras, David J. McConkey, Andres Matoso, Max Kates, Noah M. Hahn, Aaron Brant, George J. Netto, Mark Schoenberg, Alexa R. Meyer, Michael J. Biles, and Phillip M. Pierorazio
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Oncology ,Cisplatin ,medicine.medical_specialty ,Chemotherapy ,Bladder cancer ,medicine.diagnostic_test ,business.industry ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Muscle invasive ,Cystoscopy ,Disease ,medicine.disease ,Cystectomy ,03 medical and health sciences ,Exact test ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Internal medicine ,medicine ,business ,medicine.drug - Abstract
Background: Standard of care for patients with muscle-invasive bladder cancer (MIBC) includes neoadjuvant cisplatin-based chemotherapy (NAC) followed by consolidative therapy with either chemoradiation or radical cystectomy (RC). Some patients experience robust pathologic responses to NAC, and these have been reported to associate with somatic mutations in specific gene pathways including DNA damage response genes. Objective: To evaluate the ability of post-NAC clinical restaging, with or without tumor sequencing, to predict final RC pathologic staging. Design, setting, and participants: We reviewed our institutional review board–approved institutional database to identify patients with MIBC who underwent NAC followed by RC from 2003 to 2016. Following NAC prior to RC, cystoscopy was performed routinely, with resection of residual visible tumor and/or tumor base (transurethral resection [TUR]). For patients with pre-NAC tumor tissue available, tumor sequencing was performed. Outcome measurements and statistical analysis: Clinical restaging and tumor sequencing were evaluated for their ability to predict the final pathologic stage accurately at RC using chi-square or Fisher’s exact test. Results and limitations: A total of 114 patients underwent restaging TUR following NAC and prior to RC. The diagnostic accuracy of post-NAC clinical restaging including TUR was poor, with 32% of patients being downstaged falsely when compared with their final RC pathology. Forty-nine patients had sequencing of pre-NAC tumor tissue, of whom 32 showed at least one mutation of interest. However, NAC responses and rates of false downstaging did not differ significantly according to tumor mutation status. Conclusions: This study highlights the inaccuracy of post-NAC clinical restaging TUR with or without adjunctive tumor mutation analysis, to assess pathologic residual disease accurately. Caution must be taken when performing post-NAC restaging, especially when considering conservative management strategies such as active surveillance on this basis. Patient summary: Several groups are evaluating whether certain patients, whose bladder cancer responds well to upfront chemotherapy, may be able to forego cystectomy safely. We demonstrate that currently available staging tools and tumor DNA sequencing cannot identify such patients reliably and accurately.
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- 2021
16. The association of broadband internet access with dermatology practitioners: An ecologic study
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Nora M. Haney, Harry Dao, Zachary J. Solomon, Hiten D. Patel, Paige E. Nichols, Misha V. Koshelev, Michael H. Johnson, Vignesh Ramachandran, and Taylor P. Kohn
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Adult ,Rural Population ,Spatial Analysis ,medicine.medical_specialty ,business.product_category ,Geography ,Urban Population ,business.industry ,Association (object-oriented programming) ,Ecological study ,Dermatology ,Middle Aged ,Health Services Accessibility ,Telemedicine ,United States ,Young Adult ,Family medicine ,Internet access ,Humans ,Medicine ,business ,Internet Access - Published
- 2020
17. High-dimensional Cytometry (ExCYT) and Mass Spectrometry of Myeloid Infiltrate in Clinically Localized Clear Cell Renal Cell Carcinoma Identifies Novel Potential Myeloid Targets for Immunotherapy
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David J. Clark, Michael H. Johnson, Hui Zhang, John-William Sidhom, Sudipto Ganguly, Debebe Theodros, Drew M. Pardoll, Ada J. Tam, Richard L. Blosser, Li Jun Chen, Phillip M. Pierorazio, Thomas R. Nirschl, Benjamin Murter, Jelani C. Zarif, and Zeyad Schwen
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Myeloid ,medicine.medical_treatment ,clear cell renal cell carcinoma ,Biochemistry ,Peripheral blood mononuclear cell ,Mass Spectrometry ,Analytical Chemistry ,immunology ,03 medical and health sciences ,Immune system ,Tandem Mass Spectrometry ,Renal cell carcinoma ,Biomarkers, Tumor ,Tumor Microenvironment ,medicine ,Humans ,Carcinoma, Renal Cell ,Molecular Biology ,030304 developmental biology ,0303 health sciences ,Tumor microenvironment ,business.industry ,Research ,030302 biochemistry & molecular biology ,kidney cancer ,Genomics ,Immunotherapy ,peripheral blood mononuclear cells ,Flow Cytometry ,Prognosis ,medicine.disease ,Kidney Neoplasms ,macrophages ,ExCYT ,Gene Expression Regulation, Neoplastic ,Clear cell renal cell carcinoma ,medicine.anatomical_structure ,clinical proteomics ,Leukocytes, Mononuclear ,Cancer research ,Leukocyte Common Antigens ,monocytes ,business ,Cytometry ,Signal Transduction - Abstract
Although the focus of the role of cancer immunotherapy has been in advanced disease states, we sought to investigate changes to the immune infiltrate of early, clinically localized clear cell Renal Cell Carcinoma (ccRCC). Using orthogonal approaches including Mass Spectrometry on immune cell infiltrates, we report numerous alterations that provide new insight into the biology of treatment-naïve ccRCC and identification of novel targets that may prove to be clinically impactful., Graphical Abstract Highlights Using ExCYT, genomics, and Mass Spectrometry, we were able to uncover immune cell marker alterations that provide new insight into the biology of early stage ccRCC. Among the CD45+ population, we observed a high level of myeloid cell infiltration in treatment-naïve ccRCC tissues., Renal Cell Carcinoma (RCC) is one of the most commonly diagnosed cancers worldwide with research efforts dramatically improving understanding of the biology of the disease. To investigate the role of the immune system in treatment-naïve clear cell Renal Cell Carcinoma (ccRCC), we interrogated the immune infiltrate in patient-matched ccRCC tumor samples, benign normal adjacent tissue (NAT) and peripheral blood mononuclear cells (PBMCs isolated from whole blood, focusing our attention on the myeloid cell infiltrate. Using flow cytometric, MS, and ExCYT analysis, we discovered unique myeloid populations in PBMCs across patient samples. Furthermore, normal adjacent tissues and ccRCC tissues contained numerous myeloid populations with a unique signature for both tissues. Enrichment of the immune cell (CD45+) fraction and subsequent gene expression analysis revealed a number of myeloid-related genes that were differentially expressed. These data provide evidence, for the first time, of an immunosuppressive and pro-tumorigenic role of myeloid cells in early, clinically localized ccRCC. The identification of a number of immune proteins for therapeutic targeting provides a rationale for investigation into the potential efficacy of earlier intervention with single-agent or combination immunotherapy for ccRCC.
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- 2020
18. Effect of Pharmacologic Prophylaxis on Venous Thromboembolism After Radical Prostatectomy: The PREVENTER Randomized Clinical Trial
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Michael A. Gorin, Michael H. Johnson, Zeyad Schwen, Misop Han, Trinity J. Bivalacqua, Hiten D. Patel, Mohamad E. Allaf, Alan W. Partin, H. Ballentine Carter, Farzana A. Faisal, Phillip M. Pierorazio, Christian P. Pavlovich, Gregory Joice, and Bruce J. Trock
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Male ,medicine.medical_specialty ,Injections, Subcutaneous ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Chemoprevention ,law.invention ,03 medical and health sciences ,Lymphocele ,Postoperative Complications ,0302 clinical medicine ,Randomized controlled trial ,law ,Internal medicine ,medicine ,Humans ,Prospective Studies ,cardiovascular diseases ,Aged ,Prostatectomy ,Venous Thrombosis ,Heparin ,business.industry ,Anticoagulants ,Venous Thromboembolism ,Perioperative ,Middle Aged ,medicine.disease ,Interim analysis ,Pulmonary embolism ,Venous thrombosis ,030220 oncology & carcinogenesis ,Relative risk ,Preoperative Period ,Pulmonary Embolism ,business - Abstract
Background Direct high-quality evidence is lacking evaluating perioperative pharmacologic prophylaxis (PP) after radical prostatectomy (RP) to prevent venous thromboembolism (VTE) leading to significant practice variation. Objective To study the impact of in-hospital PP on symptomatic VTE incidence and adverse events after RP at 30 d, with the secondary objective of evaluating overall VTE in a screening subcohort. Design, setting, and participants A prospective, phase 4, single-center, randomized trial of men with prostate cancer undergoing open or robotic-assisted laparoscopic RP was conducted (July 2017–November 2018). Intervention PP (subcutaneous heparin) plus routine care versus routine care alone. The screening subcohort was offered lower extremity duplex ultrasound at 30 d. Outcomes measurements and statistical analysis The primary efficacy outcome was symptomatic VTE incidence (pulmonary embolism [PE] or deep venous thrombosis [DVT]). Primary safety outcomes included the incidence of symptomatic lymphocele, hematoma, or bleeding after surgery. Secondary outcomes were overall VTE, estimated blood loss, total surgical drain output, complications, and surveillance imaging bias. Fisher’s exact test and modified Poisson regression were performed. Results and limitations A total of 501 patients (75% robotic) were randomized and >99% (500/501) completed follow-up. At second interim analysis (N = 445), the symptomatic VTE rate was 2.3% (four PE + DVT and one DVT) for routine care versus 0.9% (one PE + DVT and one DVT) for PP (relative risk 0.40 [95% confidence interval 0.08–2.03], p = 0.3) meeting a futility threshold for early stopping. In the screening subcohort, the overall VTE rate was 3.3% versus 2.4% (p = 0.7). Results were similar at the final analysis (symptomatic VTE: 2.0% vs 0.8%, p = 0.3; overall VTE: 2.9% vs 2.8%, p = 1). No differences were observed in safety or secondary outcomes. All VTE events (seven symptomatic and three asymptomatic) occurred in patients undergoing pelvic lymph node dissection. Conclusions This study was not able to demonstrate a statistically significant reduction in symptomatic VTE associated with PP. There was no increase in the development of symptomatic lymphoceles, bleeding, or other adverse events. Given that the event rate was lower than powered for, further research is needed among high-risk patients (Caprini score ≥8) or patients receiving pelvic lymph node dissection. Patient summary In this report, we randomized patients undergoing radical prostatectomy to perioperative pharmacologic prophylaxis or routine care alone. We found that pharmacologic prophylaxis did not reduce postoperative symptomatic venous thromboembolism significantly for men at routine risk. Importantly, pharmacologic prophylaxis did not increase adverse events, such as formation of lymphoceles or bleeding, and can safely be implemented when indicated for patients with risk factors undergoing radical prostatectomy.
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- 2020
19. MP05-09 COMPARATIVE EFFECTIVENESS OF MRI-U/S FUSION VERSUS IN-BORE MRI-TARGETED PROSTATE BIOPSY
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Leo L. Tsai, Francisco Ramos, Boris Gershman, Ruslan Korets, Aaron Fleishman, Michael H. Johnson, and Aria F. Olumi
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medicine.medical_specialty ,Prostate cancer ,Standard of care ,Prostate biopsy ,medicine.diagnostic_test ,business.industry ,Urology ,Biopsy ,medicine ,Radiology ,medicine.disease ,business ,Elevated PSA - Abstract
INTRODUCTION AND OBJECTIVE:MRI-targeted biopsy has emerged as a standard of care in the management of men with elevated PSA and prostate cancer on active surveillance. Although two main biopsy tech...
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- 2021
20. MP43-20 PREDICTING CANCER DETECTION RATES FROM MULTIPARAMETRIC PROSTATE MRI: REFINING BEYOND THE PI-RADS CLASSIFICATION SYSTEM
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Michael H. Johnson, Aria F. Olumi, Leo L. Tsai, Ruslan Korets, Francisco Ramos, Sumedh Kaul, Aaron Fleishman, and Boris Gershman
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PI-RADS ,medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,Prostate ,Urology ,Medicine ,Radiology ,Cancer detection ,business - Published
- 2021
21. Access to Urological Care and Internet Connectivity in the United States: A Geospatial Analysis
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Hiten D. Patel, C.J. Stimson, Paige E. Nichols, Phillip M. Pierorazio, Michael H. Johnson, Matthew T. Gettman, Taylor P. Kohn, Stephen A. Boorjian, and Nora M. Haney
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Telemedicine ,business.product_category ,Geospatial analysis ,business.industry ,Mechanism (biology) ,Urology ,Internet privacy ,030232 urology & nephrology ,computer.software_genre ,03 medical and health sciences ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Internet access ,Medicine ,The Internet ,business ,computer - Abstract
Introduction:Telemedicine video visits have been suggested as a mechanism to improve access to urological care in geographically isolated communities. However, Internet availability is not ...
- Published
- 2019
22. IgG Seroconversion and Pathophysiology in Severe Acute Respiratory Syndrome Coronavirus 2 Infection
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Sanjeev Krishna, Rachel L Byrne, Michael H. Johnson, Ana I Cubas-Atienzar, Alice J. Fraser, Nicholas M Eckersley, Irene M. Monahan, James Schouten, Qinxue Hu, Kesja Klekotko, Stefanie Menzies, David J. Clark, Daniel M. Forton, Linda Hadcocks, Martina Cusinato, Luis E. Cuevas, Daniela E. Kirwan, Gerhard Nebe-von-Caron, Gala Garrod, Catherine Moore, Emily R. Adams, Benedict M O Davies, Tim Planche, Amadou A. Sall, Paul A. Davis, Joseph R Fitchett, Josephine Mensah-Kane, Henry M. Staines, Michael Cocozza, Sophie I Owen, Grant A Kay, Christopher T Williams, Chris Sainter, Derek C. Macallan, Yolanda Augustin, Zawditu Lewis, Kevin Woolston, Annelyse Duvoix, John T. Wilkins, and Mark M. Davis
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Male ,Epidemiology ,Disease outcome ,coronavirus ,lcsh:Medicine ,serology ,medicine.disease_cause ,Antibodies, Viral ,Immunoglobulin G ,Serology ,immunology ,IgG Seroconversion and Pathophysiology in Severe Acute Respiratory Syndrome Coronavirus 2 Infection ,diagnostics ,Medicine ,antibodies ,antibody responses ,Coronavirus ,biology ,Reverse Transcriptase Polymerase Chain Reaction ,Middle Aged ,Pathophysiology ,Infectious Diseases ,coronavirus disease ,Seroconversion ,Female ,Antibody ,severe acute respiratory syndrome coronavirus 2 ,Microbiology (medical) ,Adult ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Enzyme-Linked Immunosorbent Assay ,lcsh:Infectious and parasitic diseases ,2019 novel coronavirus disease ,respiratory infections ,Humans ,lcsh:RC109-216 ,viruses ,Aged ,business.industry ,SARS-CoV-2 ,Research ,lcsh:R ,fungi ,COVID-19 ,United Kingdom ,zoonoses ,Immunology ,biology.protein ,business - Abstract
We investigated the dynamics of seroconversion in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. During March 29-May 22, 2020, we collected serum samples and associated clinical data from 177 persons in London, UK, who had SARS-CoV-2 infection. We measured IgG against SARS-CoV-2 and compared antibody levels with patient outcomes, demographic information, and laboratory characteristics. We found that 2.0%-8.5% of persons did not seroconvert 3-6 weeks after infection. Persons who seroconverted were older, were more likely to have concurrent conditions, and had higher levels of inflammatory markers. Non-White persons had higher antibody concentrations than those who identified as White; these concentrations did not decline during follow-up. Serologic assay results correlated with disease outcome, race, and other risk factors for severe SARS-CoV-2 infection. Serologic assays can be used in surveillance to clarify the duration and protective nature of humoral responses to SARS-CoV-2 infection.
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- 2021
23. Local and Regional Recurrences of Clinically Localized Renal Cell Carcinoma after Nephrectomy: A 15 Year Institutional Experience with Prognostic Features and Oncologic Outcomes
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Michael H. Johnson, Nirmish Singla, Joseph G. Cheaib, Shagnik Ray, Yasser Ged, Kevin G. Pineault, Mark C. Markowski, Michael J. Biles, Phillip M. Pierorazio, and Mohamad E. Allaf
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Adult ,Male ,medicine.medical_specialty ,Time Factors ,Combination therapy ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Nephrectomy ,Article ,Metastasis ,03 medical and health sciences ,0302 clinical medicine ,Renal cell carcinoma ,medicine ,Humans ,Carcinoma, Renal Cell ,Aged ,Retrospective Studies ,business.industry ,Hazard ratio ,Middle Aged ,medicine.disease ,Prognosis ,Kidney Neoplasms ,Systemic metastasis ,Surgery ,Survival Rate ,medicine.anatomical_structure ,Treatment Outcome ,Median time ,030220 oncology & carcinogenesis ,Abdomen ,Female ,Neoplasm Recurrence, Local ,business - Abstract
Objective To evaluate outcomes for patients with local recurrence (LR) of clinically localized renal cell carcinoma (RCC) without concurrent systemic metastasis from our institution, an event that occurs rarely (1%-3%) after surgery. LR may be a harbinger of poor outcomes, and the best management of these patients is unclear. Materials/Methods We retrospectively reviewed patients surgically treated for clinically localized RCC (cT1-2N0M0) with subsequent LR (in the partial or radical nephrectomy bed) and/or regional recurrence (RR; in the abdomen distant from the direct site of surgery) without concurrent metastasis from our institutional database (2004-2018). Comparative and survival analyses were performed. Results Out of 3038 total patients, 1895 had clinically localized RCC, with 30 patients (1.6%) having isolated LR/RR. Median time to recurrence was 26.5 months (IQR:16-35). Of 26 patients treated with local therapy, 14 (53.8%) recurred over a median follow-up time of 29.5 months (IQR:12-45). The 1-year and 2-year secondary recurrence-free survival rates are 60.7% and 49.7%, respectively. Two or more sites of locoregional recurrence significantly predicted secondary recurrence/metastasis after local therapy for local recurrence (hazard ratio: 2.22, P= .04). Conclusion Our results suggest local therapy is appropriate for select patients with LR/RR, with almost 50% of patients undergoing a second local therapy remaining alive with “local cure” and no secondary recurrence. The number of sites of recurrence can be used to better select patients that will benefit from local therapy or systemic/combination therapy. This work provides a framework onto which further studies regarding local therapy and locoregional recurrence of RCC can be performed.
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- 2020
24. Rapid development of COVID-19 rapid diagnostics for low resource settings: accelerating delivery through transparency, responsiveness, and open collaboration
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Katherin Keymer, Michael H. Johnson, Tom Fletcher, Nicholas M Eckersley, James Schouten, Daniela E. Kirwan, Benedict M O Davies, Qinxue Hu, Thomas Edwards, David J Clark, Irene M. Monahan, Martina Cusinato, Josie Mensah-Kane, Lance Turtle, Joseph R Fitchett, Alice J. Fraser, Kesja Klekotko, Yolanda Augustin, Tim Planche, John T. Wilkins, Stefanie Menzies, Catherine M. Moore, Henry M. Staines, Jenifer C. Mason, Michael Cocozza, Sophie I Owen, Luis E. Cuevas, Mark S. Davies, Gala Garrod, Linda Hadcocks, Paul Davies, Chris Sainter, Zawditu Lewis, Grant A Kay, Kevin Woolston, Gerhard Nebe-von-Caron, Amadou A. Sall, Sanjeev Krishna, Rachel L Byrne, Ana I Cubas-Atienzar, Emily R. Adams, Christopher T Williams, and Annelyse Duvoix
- Subjects
0303 health sciences ,medicine.medical_specialty ,Coronavirus disease 2019 (COVID-19) ,Low resource ,business.industry ,Serum samples ,3. Good health ,Respiratory pathogens ,03 medical and health sciences ,0302 clinical medicine ,Open collaboration ,Internal medicine ,medicine ,030212 general & internal medicine ,Igg elisa ,business ,Disease burden ,Contact tracing ,030304 developmental biology - Abstract
SummaryHere we describe an open and transparent consortium for the rapid development of COVID-19 rapid diagnostics tests. We report diagnostic accuracy data on the Mologic manufactured IgG COVID-19 ELISA on known positive serum samples and on a panel of known negative respiratory and viral serum samples pre-December 2019.In January, Mologic, embarked on a product development pathway for COVID-19 diagnostics focusing on ELISA and rapid diagnostic tests (RDTs), with anticipated funding from Wellcome Trust and DFID.834 clinical samples from known COVID-19 patients and hospital negative controls were tested on Mologic’s IgG ELISA. The reported sensitivity on 270 clinical samples from 124 prospectively enrolled patients was 94% (95% CI: 89.60% - 96.81%) on day 10 or more post laboratory diagnosis, and 96% (95% CI: 84.85% - 99.46%) between 14–21 days post symptom onset. A specificity panel comprising 564 samples collected pre-December 2019 were tested to include most common respiratory pathogens, other types of coronavirus, and flaviviruses. Specificity in this panel was 97% (95% CI: 95.65% - 98.50%).This is the first in a series of Mologic products for COVID-19, which will be deployed for COVID-19 diagnosis, contact tracing and sero-epidemiological studies to estimate disease burden and transmission with a focus on ensuring access, affordability, and availability to low-resource settings.
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- 2020
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25. PD39-12 UROLOGIST-LEVEL UTILIZATION PATTERNS OF CYTOREDUCTIVE SURGERY FOR METASTATIC RENAL CELL CARCINOMA
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Michael J. Biles, Meredith Metcalf, Michael H. Johnson, Phillip M. Pierorazio, Mohamad E. Allaf, Joseph G. Cheaib, Mitchell M. Huang, Russell Becker, Hiten D. Patel, Julia Wainger, and Joseph K. Canner
- Subjects
medicine.medical_specialty ,business.industry ,Renal cell carcinoma ,Urology ,Medicine ,Cytoreductive surgery ,business ,medicine.disease - Published
- 2020
26. PD45-10 ACTIVE SURVEILLANCE FOR SMALL RENAL MASSES IS SAFE AND NON-INFERIOR: 10-YEAR UPDATE FROM THE DISSRM REGISTRY
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Tina Wlajnitz, Michael J. Biles, Andrew J. Wagner, Michael H. Johnson, Phillip M. Pierorazio, Joseph G. Cheaib, Borna Kassiri, James M. McKiernan, Mohamad E. Allaf, Ridwan Alam, Meredith Metcalf, and Peter Chang
- Subjects
medicine.medical_specialty ,business.industry ,Urology ,Internal medicine ,Intervention (counseling) ,medicine ,urologic and male genital diseases ,business - Abstract
INTRODUCTION AND OBJECTIVE:Active surveillance (AS) is an alternative to primary intervention (PI) aimed at reducing the overtreatment of small renal masses (SRM) suspicious for renal cell carcinom...
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- 2020
27. PD02-10 THE IMPACT OF SURGEON AND HOSPITAL VOLUME ON 30-DAY OUTCOMES AND COST FOR RENAL CANCER SURGERY
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Mohamad E. Allaf, Phillip M. Pierorazio, Michael H. Johnson, Michael J. Biles, Hiten D. Patel, Joseph G. Cheaib, Mitchell M. Huang, Joseph K. Canner, and Julia Wainger
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medicine.medical_specialty ,Health services ,Hospital volume ,business.industry ,Urology ,media_common.quotation_subject ,Emergency medicine ,Medicine ,Quality (business) ,business ,Cancer surgery ,media_common - Abstract
INTRODUCTION AND OBJECTIVE:Provider and hospital factors influence quality, but granular data is lacking to assess their impact on renal cancer surgery. The Maryland Health Service Cost Review Comm...
- Published
- 2020
28. MP08-07 GENOMIC PROFILING OF CT1A CLEAR CELL RENAL CELL CARCINOMA FOR PREDICTING AGGRESSIVE PATHOLOGY
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Michael H. Johnson, Michael J. Biles, Michael A. Gorin, Ridwan Alam, Alexander S. Baras, Hiten D. Patel, Phillip M. Pierorazio, Joseph G. Cheaib, Mohamad E. Allaf, and Zeyad Schwen
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Pathology ,medicine.medical_specialty ,Clear cell renal cell carcinoma ,Genomic profiling ,business.industry ,Tumor biology ,Renal cell carcinoma ,Urology ,Medicine ,urologic and male genital diseases ,business ,medicine.disease - Abstract
INTRODUCTION AND OBJECTIVE:A greater emphasis has been placed on illuminating the mutational landscape of renal cell carcinoma (RCC) to better understanding the underlying tumor biology to predict ...
- Published
- 2020
29. PD42-01 RESIDUAL MUSCLE-INVASIVE DISEASE AT CYSTECTOMY IS NOT ACCURATELY PREDICTED BY POST-CHEMOTHERAPY RESTAGING PROTOCOLS INCLUDING DNA DAMAGE RESPONSE GENE MUTATION ANALYSIS
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Jean H. Hoffman-Censits, David J. McConkey, Andres Matoso, Russell Becker, Mark P. Schoenberg, Max Kates, Aaron Brant, Phillip M. Pierorazio, George J. Netto, Trinity J. Bivalacqua, Adam C. Reese, Alexander S. Baras, Alexa R. Meyer, Noah M. Hahn, Michael H. Johnson, and Woonyoung Choi
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Oncology ,Cisplatin ,medicine.medical_specialty ,Chemotherapy ,Bladder cancer ,DNA damage ,business.industry ,Urology ,medicine.medical_treatment ,Muscle invasive ,Disease ,medicine.disease ,Cystectomy ,Internal medicine ,medicine ,Gene mutation analysis ,business ,medicine.drug - Abstract
INTRODUCTION AND OBJECTIVE:The standard of care for eligible patients with muscle-invasive bladder cancer (MIBC) includes neoadjuvant cisplatin-based chemotherapy (NAC), followed by radical cystect...
- Published
- 2020
30. PD49-11 NEPHROLOGY REFERRAL PRACTICES SURROUNDING RENAL CANCER SURGERY
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Mitchell M. Huang, Michael J. Biles, Hiten D. Patel, Joseph G. Cheaib, Joseph K. Canner, Meredith Metcalf, Mohamad E. Allaf, Julia Wainger, Michael H. Johnson, and Phillip M. Pierorazio
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Nephrology ,medicine.medical_specialty ,Referral ,business.industry ,Urology ,Internal medicine ,General surgery ,medicine ,business ,Cancer surgery - Published
- 2020
31. MP14-20 SITE OF METASTATIC RECURRENCE IMPACTS PROGNOSIS IN PATIENTS WITH UPPER TRACT UROTHELIAL CARCINOMA
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Michael H. Johnson, Max Kates, Rashed Ghandour, Phillip M. Pierorazio, Joseph G. Cheaib, Trinity J. Bivalacqua, Hiten D. Patel, Jean H. Hoffman-Censits, Noah M. Hahn, Mohit Gupta, and Lauren Elizabeth Claus
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medicine.medical_specialty ,Upper tract ,business.industry ,Urology ,Medicine ,In patient ,business ,Urothelial carcinoma - Abstract
INTRODUCTION AND OBJECTIVE:Metastatic recurrence (MR) of upper tract urothelial carcinoma (UTUC) occurs in over 25% of patients treated with radical nephroureterectomy (RNU). While MR suggests poor...
- Published
- 2020
32. Comparative effectiveness of management options for patients with small renal masses: a prospective cohort study
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Michael A. Gorin, Michael H. Johnson, Andrew A. Wagner, Ridwan Alam, Peter Chang, Arnav Srivastava, Mohamad E. Allaf, Tijani Osumah, Phillip M. Pierorazio, Hiten D. Patel, Bruce J. Trock, and James M. McKiernan
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Ablation Techniques ,Male ,Comparative Effectiveness Research ,medicine.medical_specialty ,Short form 12 ,Health Status ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Renal function ,Comorbidity ,Kaplan-Meier Estimate ,Nephrectomy ,Article ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Quality of life ,Surveys and Questionnaires ,medicine ,Humans ,Prospective Studies ,Registries ,Watchful Waiting ,Prospective cohort study ,Carcinoma, Renal Cell ,Survival analysis ,Proportional Hazards Models ,Creatinine ,business.industry ,Age Factors ,Ablation ,Kidney Neoplasms ,Tumor Burden ,Survival Rate ,chemistry ,030220 oncology & carcinogenesis ,Quality of Life ,Female ,business ,Glomerular Filtration Rate - Abstract
Objectives To explore the comparative effectiveness of partial nephrectomy (PN), radical nephrectomy (RN), ablative therapies (ablation) and active surveillance (AS) for small renal masses (SRMs; tumour diameter ≤4.0 cm) in the domains of survival, renal function and quality of life (QoL) using the prospectively maintained Delayed Intervention and Surveillance for Small Renal Masses (DISSRM) Registry. Patients and methods Estimated glomerular filtration rate (eGFR) was calculated from creatinine values to determine renal function. QoL was measured using the Short Form 12 (SF-12) questionnaire. The Kaplan-Meier method and Cox proportional hazards regression were used for survival analysis. The mixed-effects model was used for renal function and QoL analysis. Results Of 638 patients, 231 (36.2%) chose PN, 41 (6.4%) RN, 27 (4.2%) ablation and 339 (53.1%) AS. Cancer-specific survival at 7 years was 98.8% in PN patients and 100% in all other groups. Overall survival (OS) at 7 years was 87.9%, 90.2%, 83.5% and 66.1% in PN, RN, ablation and AS patients, respectively. The OS rate was significantly worse in the AS group than other groups and likely attributable to older age and increased comorbidities. The eGFR was lowest in RN patients but comparable in all other groups. QoL was lowest in AS patients due to lower physical health scores, but mental health scores were similar in all groups. Conclusions With excellent oncological outcomes in all groups, nephron-sparing approaches, like PN and ablation, are preferred over RN when intervention is indicated for SRMs. AS is a reasonable option for select patients, given the comparable oncological and mental health outcomes.
- Published
- 2018
33. Comparison of Pathological Stage in Patients Treated with and without Neoadjuvant Chemotherapy for High Risk Upper Tract Urothelial Carcinoma
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Michael H. Johnson, Noah M. Hahn, Mohit Gupta, David J. McConkey, Phillip M. Pierorazio, Zeyad Schwen, Trinity J. Bivalacqua, Hiten D. Patel, Max Kates, and Ross Liao
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medicine.medical_specialty ,Chemotherapy ,medicine.diagnostic_test ,business.industry ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Retrospective cohort study ,medicine.disease ,03 medical and health sciences ,symbols.namesake ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Biopsy ,medicine ,Carcinoma ,symbols ,Radiology ,Stage (cooking) ,business ,Ureteral neoplasm ,Neoadjuvant therapy ,Fisher's exact test - Abstract
Purpose: High risk upper tract urothelial carcinoma has been associated with poor survival outcomes. Limited retrospective data support neoadjuvant chemotherapy prior to radical nephroureterectomy. To validate prior findings we evaluated differences in the pathological stage distribution in patients with high risk upper tract urothelial carcinoma based on the administration of neoadjuvant chemotherapy before radical nephroureterectomy.Materials and Methods: We retrospectively analyzed the records of 240 patients with upper tract urothelial carcinoma at The Johns Hopkins Hospital from 2003 to 2017. Patients with biopsy proven high grade disease and a visible lesion on cross-sectional imaging were offered neoadjuvant chemotherapy prior to radical nephroureterectomy. A control group of a time matched cohort of patients with biopsy proven high grade disease underwent extirpative surgery alone. The chi-square and Fisher exact tests were used to evaluate clinical and pathological variables between the cohorts.R...
- Published
- 2018
34. Growth Kinetics of Small Renal Masses on Active Surveillance: Variability and Results from the DISSRM Registry
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Michael A. Gorin, Mark Riffon, Akachimere Uzosike, Mohit Gupta, Michael H. Johnson, Hiten D. Patel, Bruce J. Trock, Heather Gausepohl, Ridwan Alam, Zeyad Schwen, Phillip M. Pierorazio, Mohamad E. Allaf, Andrew A. Wagner, James M. McKiernan, and Peter Chang
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,Growth kinetics ,Biopsy ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,03 medical and health sciences ,0302 clinical medicine ,Renal cell carcinoma ,medicine ,Renal mass ,Humans ,Prospective Studies ,Registries ,Watchful Waiting ,Carcinoma, Renal Cell ,Aged ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,medicine.disease ,Magnetic Resonance Imaging ,Kidney Neoplasms ,Tumor Burden ,Surgery ,Delayed intervention ,030220 oncology & carcinogenesis ,Disease Progression ,Female ,Radiology ,Tomography, X-Ray Computed ,business ,Watchful waiting ,Follow-Up Studies - Abstract
Active surveillance is emerging as a safe and effective strategy for the management of small renal masses (4 cm or less). We characterized the growth rate and its pertinence to clinical outcomes in a prospective multi-institutional study of patients with small renal masses.Since 2009, the DISSRM (Delayed Intervention and Surveillance for Small Renal Masses) prospective, multi-institutional registry of patients with small renal masses has enrolled patients who elect primary intervention or active surveillance. Patients who elect active surveillance received regularly scheduled imaging and those with 3 or more followup images were included in the current study to evaluate growth rates.We evaluated 318 patients who elected active surveillance, of whom 271 (85.2%) had 3 or more followup images available with a median imaging followup of 1.83 years. The overall mean ± SD small renal mass growth rate was 0.09 ± 1.51 cm per year (median 0.09) with no variables demonstrating statistically significant associations. The growth rate and variability decreased with longer followup (0.54 and 0.07 cm per year at less than 6 months and greater than 1 year, respectively). No patients had metastatic disease or died of kidney cancer. No statistically significant difference was noted in the growth rate in patients with biopsy demonstrated renal cell carcinoma or in those who died.Small renal mass growth kinetics are highly variable early on active surveillance with growth rates and variability decreasing with time. Early in active surveillance, especially during the initial 6 to 12 months, the growth rate is variable and does not reliably predict death or adverse pathological features in the patient subset with available pathology findings. An elevated growth rate may indicate the need for further assessment with imaging or consideration of biopsy prior to progressing to treatment. Additional followup will inform the best clinical pathway for elevated growth rates.
- Published
- 2018
35. Low levels of PSMA expression limit the utility of 18F-DCFPyL PET/CT for imaging urothelial carcinoma
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Alexander S. Baras, Steven P. Rowe, Michael H. Johnson, Noah M. Hahn, Max Kates, Mohamad E. Allaf, Scott P. Campbell, Martin G. Pomper, Michael A. Gorin, Mark W. Ball, and Trinity J. Bivalacqua
- Subjects
PET-CT ,medicine.medical_specialty ,Pathology ,Metastatic Urothelial Carcinoma ,Bladder cancer ,medicine.diagnostic_test ,business.industry ,Urology ,General Medicine ,urologic and male genital diseases ,medicine.disease ,Malignancy ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,Clear cell renal cell carcinoma ,Prostate cancer ,0302 clinical medicine ,Transitional cell carcinoma ,030220 oncology & carcinogenesis ,Biopsy ,medicine ,Radiology, Nuclear Medicine and imaging ,business - Abstract
To explore the clinical utility of PSMA-targeted 18F-DCFPyL PET/CT in patients with metastatic urothelial carcinoma. Three patients with metastatic urothelial carcinoma were imaged with 18F-DCFPyL PET/CT. All lesions with perceptible radiotracer uptake above background were considered positive. Maximum standardized uptake values were recorded for each detected lesion and findings on 18F-DCFPyL PET/CT were compared to those on conventional imaging studies. To further explore PSMA as a molecular target of urothelial carcinoma, RNA-sequencing data from The Cancer Genome Atlas were used to compare the relative expression of PSMA among cases of bladder cancer, prostate cancer, and clear cell renal cell carcinoma. Additionally, immunohistochemical staining for PSMA was performed on a biopsy specimen from one of the imaged patients. 18F-DCFPyL PET/CT allowed for the detection of sites of urothelial carcinoma, albeit with low levels of radiotracer uptake. Analysis of RNA-sequencing data revealed that bladder cancer had significantly lower levels of PSMA expression than both prostate cancer and clear cell renal cell carcinoma. Consistent with this observation, immunohistochemical staining of tissue from one of the imaged patients demonstrated a low level of neovascularization and nearly absent PSMA expression. The relatively scant expression of PSMA by urothelial carcinoma likely limits the utility of PSMA-targeted PET imaging of this malignancy. Future research efforts should focus on the development of other molecularly targeted imaging agents for urothelial carcinoma.
- Published
- 2017
36. Renal Functional Outcomes after Surgery, Ablation, and Active Surveillance of Localized Renal Tumors: A Systematic Review and Meta-Analysis
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Hiten D. Patel, Mohamad E. Allaf, Ritu Sharma, Eric B Bass, Emmanuel Iyoha, Stephen M. Sozio, Phillip M. Pierorazio, and Michael H. Johnson
- Subjects
Ablation Techniques ,medicine.medical_specialty ,Hot Temperature ,Time Factors ,Epidemiology ,medicine.medical_treatment ,030232 urology & nephrology ,Urology ,Renal function ,Kidney ,urologic and male genital diseases ,Critical Care and Intensive Care Medicine ,Nephrectomy ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Renal cell carcinoma ,Odds Ratio ,Humans ,Medicine ,Renal Insufficiency, Chronic ,Stage (cooking) ,Watchful Waiting ,Carcinoma, Renal Cell ,Neoplasm Staging ,Transplantation ,business.industry ,Incidence ,Acute kidney injury ,Original Articles ,Acute Kidney Injury ,medicine.disease ,Kidney Neoplasms ,Surgery ,Treatment Outcome ,medicine.anatomical_structure ,Nephrology ,030220 oncology & carcinogenesis ,Relative risk ,Meta-analysis ,Kidney Failure, Chronic ,business ,Glomerular Filtration Rate - Abstract
Background and objectives Management strategies for localized renal masses suspicious for renal cell carcinoma include radical nephrectomy, partial nephrectomy, thermal ablation, and active surveillance. Given favorable survival outcomes across strategies, renal preservation is often of paramount concern. To inform clinical decision making, we performed a systematic review and meta-analysis of studies comparing renal functional outcomes for radical nephrectomy, partial nephrectomy, thermal ablation, and active surveillance. Design, settings, participants, & measurements We searched MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials from January 1, 1997 to May 1, 2015 to identify comparative studies reporting renal functional outcomes. Meta-analyses were performed for change in eGFR, incidence of CKD, and AKI. Results We found 58 articles reporting on relevant renal functional outcomes. Meta-analyses showed that final eGFR fell 10.5 ml/min per 1.73 m2 lower for radical nephrectomy compared with partial nephrectomy and indicated higher risk of CKD stage 3 or worse (relative risk, 2.56; 95% confidence interval, 1.97 to 3.32) and ESRD for radical nephrectomy compared with partial nephrectomy. Overall risk of AKI was similar for radical nephrectomy and partial nephrectomy, but studies suggested higher risk for radical nephrectomy among T1a tumors (relative risk, 1.37; 95% confidence interval, 1.13 to 1.66). In general, similar findings of worse renal function for radical nephrectomy compared with thermal ablation and active surveillance were observed. No differences in renal functional outcomes were observed for partial nephrectomy versus thermal ablation. The overall rate of ESRD was low among all management strategies (0.4%–2.8%). Conclusions Renal functional implications varied across management strategies for localized renal masses, with worse postoperative renal function for patients undergoing radical nephrectomy compared with other strategies and similar outcomes for partial nephrectomy and thermal ablation. Further attention is needed to quantify the changes in renal function associated with active surveillance and nephron-sparing approaches for patients with preexisting CKD.
- Published
- 2017
37. Residual muscle-invasive disease at cystectomy is not accurately predicted by post-chemotherapy restaging protocols including DNA damage response gene mutation analysis
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Alexa R. Meyer, Michael H. Johnson, Woonyoung Choi, Alexander S. Baras, Mark P. Schoenberg, Russell E.N. Becker, Noah M. Hahn, Georges J. Netto, Philip Pierorazio, Max Kates, David J. McConkey, Trinity J. Bivalacqua, Adam C. Reese, Andres Matoso, Aaron Brant, and Jeannie Hoffman-Censits
- Subjects
Oncology ,medicine.medical_specialty ,business.industry ,DNA damage ,Urology ,medicine.medical_treatment ,Muscle invasive ,Disease ,lcsh:Diseases of the genitourinary system. Urology ,lcsh:RC870-923 ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,lcsh:RC254-282 ,Cystectomy ,Internal medicine ,Medicine ,Gene mutation analysis ,business ,Post-chemotherapy - Published
- 2020
38. A Systematic Review of Research Gaps in the Evaluation and Management of Localized Renal Masses
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Stephen M. Sozio, Michael H. Johnson, Phillip M. Pierorazio, Hiten D. Patel, Mohamad E. Allaf, Eric B Bass, Emmanuel Iyoha, and Ritu Sharma
- Subjects
medicine.medical_specialty ,Biomedical Research ,Urology ,030232 urology & nephrology ,MEDLINE ,Global Health ,Malignancy ,Article ,03 medical and health sciences ,0302 clinical medicine ,Renal cell carcinoma ,Health care ,medicine ,Humans ,Sampling (medicine) ,Stage (cooking) ,Disease management (health) ,Intensive care medicine ,Prospective cohort study ,Quality Indicators, Health Care ,business.industry ,Disease Management ,medicine.disease ,Combined Modality Therapy ,Kidney Neoplasms ,Surgery ,Survival Rate ,030220 oncology & carcinogenesis ,Morbidity ,business - Abstract
The management of clinically localized renal masses suspicious for renal cell carcinoma varies, partially because of gaps in the evidence base. We conducted a systematic review to summarize research gaps for the evaluation of composite models for predicting malignancy; use of percutaneous renal sampling for diagnosis; and comparative effectiveness of surgery, thermal ablation, and active surveillance. A total of 147 studies, published in 150 articles, were identified. To promote improved patient care and health outcomes, we recommend incorporation of emerging biomarkers into validated composite models, standardization of biopsy protocols, standard reporting of clinical stage, and performance of prospective studies with objective selection criteria.
- Published
- 2016
39. Management of advanced adenocarcinoma in Indiana Pouch urinary diversion
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Edward Wright, Michael A. Bell, Sandy H. Fang, Nikolai A. Sopko, and Michael H. Johnson
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medicine.medical_specialty ,Urology ,medicine.medical_treatment ,Urinary system ,030232 urology & nephrology ,Adenocarcinoma ,lcsh:RC870-923 ,Cystectomy ,03 medical and health sciences ,0302 clinical medicine ,Indiana Pouch ,Medicine ,High microsatellite instability ,Bladder cancer ,business.industry ,Urinary diversion ,respiratory system ,medicine.disease ,lcsh:Diseases of the genitourinary system. Urology ,digestive system diseases ,Surgery ,Oncology ,030220 oncology & carcinogenesis ,Indiana pouch ,Pouch ,business ,Continent Urinary Diversion ,human activities - Abstract
Adenocarcinoma is a rare finding following urinary diversion with gastrointestinal segments. This report describes an 80-year-old woman with a history of bladder cancer who subsequently developed a pT4 adenocarcinoma 8 years following her radical cystectomy and Indiana Pouch continent urinary diversion. An en bloc resection of the pouch and affected small bowel was performed and the patient underwent conversion to an ileal conduit diversion. We use this case to highlight a mechanism for possible pathogenesis and the management of adenocarcinoma in urinary diversions including the need for regular surveillance and the surgical approach.
- Published
- 2018
40. Recommendations for Opioid Prescribing after Endourological and Minimally Invasive Urological Surgery: An Expert Panel Consensus
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Kevin Koo, Farzana Faisal, Natasha Gupta, Alexa R. Meyer, Hiten D. Patel, Phillip M. Pierorazio, Brian R. Matlaga, Mohamad E. Allaf, Michael A Gorin, Mohit Gupta, Misop Han, Michael H. Johnson, Anastasia Padilla, Christian P. Pavlovich, and Whitney Sharpe
- Subjects
Position statement ,medicine.medical_specialty ,Pain, Postoperative ,Delphi Technique ,business.industry ,Urology ,Opioid use ,Urinary system ,030232 urology & nephrology ,Opioid-Related Disorders ,Urological surgery ,Opioid prescribing ,United States ,Analgesics, Opioid ,03 medical and health sciences ,0302 clinical medicine ,Pain control ,Medicine ,Humans ,Pain Management ,Urologic Surgical Procedures ,Practice Patterns, Physicians' ,business ,Intensive care medicine - Abstract
Opioids are frequently overprescribed after surgery. The 2018 AUA position statement on opioid use suggests using the lowest dose and potency to achieve pain control but the lack of procedure specific prescribing guidelines contributes to wide variation in prescribing patterns. To address this gap we aimed to develop opioid prescribing recommendations through an expert panel consensus.The 15-member multidisciplinary expert panel included representatives from 5 stakeholder groups. A 3-step modified Delphi method was used to develop recommendations for postoperative opioid prescribing. Recommendations were made for opioid naïve patients without chronic pain conditions. The panel used oxycodone 5 mg equivalents to define the number of prescribed tablets.Procedure specific recommendations were developed for 16 endourological and minimally invasive urological procedures. The panel agreed that not all patients desire or require opioids and, thus, the minimum recommended number of opioid tablets for all procedures was 0. Consensus ranges were identified to allow prescribed quantities to be aligned with expected needs. The maximum recommended quantity varied by procedure from 0 tablets (3 procedures) to 15 tablets (6 procedures) with a median of 10 tablets. Attending urologists typically voted for higher opioid quantities than nonattending panel members. The panel identified 8 overarching strategies for opioid stewardship, including contextualizing postoperative pain management with patient goals and preferences, and maximizing nonopioid therapies.Procedure specific guidelines for postoperative opioid prescribing may help align individual urologist prescribing habits with consensus recommendations. These guidelines can aid quality improvement efforts to reduce overprescribing in urology.
- Published
- 2019
41. The incidence, predictors, and survival of disappearing small renal masses on active surveillance
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Phillip M. Pierorazio, Bruce J. Trock, Michael H. Johnson, James M. McKiernan, Ridwan Alam, Andrew A. Wagner, Arnav Srivastava, Mohamad E. Allaf, Zeyad Schwen, Mohit Gupta, Michael A. Gorin, Peter Chang, Gregory Joice, and Hiten D. Patel
- Subjects
musculoskeletal diseases ,Male ,medicine.medical_specialty ,Urology ,030232 urology & nephrology ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,Renal cell carcinoma ,medicine ,Humans ,Prospective Studies ,Watchful Waiting ,Aged ,Ultrasonography ,Relative survival ,business.industry ,Incidence (epidemiology) ,Incidence ,Ultrasound ,Solid mass ,medicine.disease ,Kidney Neoplasms ,Oncology ,Delayed intervention ,030220 oncology & carcinogenesis ,Female ,Radiology ,medicine.symptom ,business ,human activities ,Kidney cancer - Abstract
To evaluate the incidence, predictors, and survival for those small renal masses (SRM, solid mass ≤4 cm suspicious for a clinical T1a renal cell carcinoma) that disappear on imaging while undergoing active surveillance (AS).The Delayed Intervention and Surveillance for SRM registry prospectively enrolled 739 patients with SRMs. Patients having at least 1 image showing no lesion were considered to have a "disappearing" SRM. Logistic regression assessed predictors of having a disappearing SRM and Kaplan-Meier estimates illustrated relative survival.Of 374 patients enrolled in AS, 22 (5.9%) experienced a disappearing SRM. Mean time to tumor disappearance was 2.0 years (SD = 1.9) and 50.0% reappeared on subsequent CT imaging. SRM disappearance, most commonly encountered on ultrasound imaging surveillance, was independently associated with tumors1 cm on multivariable analysis (OR = 10.6 (95% CI: 1.1-100.3), P = 0.04). Furthermore, patients with disappearing SRMs were healthier than other patients on AS with no compromise in overall survival during follow-up (5-year survival = 100% vs. 73.2%, P = 0.06).Approximately 5% of SRM on AS will disappear during follow-up on surveillance imaging. Most of these represent artifacts of heterogeneous imaging modalities, including ultrasound, and the SRM will reappear on subsequent imaging. Given the indolent nature of these lesions, disappearance events do not require reflex repeat imaging and patients should continue AS with their original surveillance schedule intact. A smaller percentage of patients undergoing AS for a SRM may have a mass the permanently disappears.
- Published
- 2019
42. MP50-09 BLADDER RECURRENCE IN PATIENTS WITH UPPER TRACT UROTHELIAL CARCINOMA
- Author
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Ross Liao, Noah M. Hahn, Phillip M. Pierorazio, Michael H. Johnson, Mohit Gupta, Trinity J. Bivalacqua, Jean H. Hoffman-Censits, Max Kates, and Joseph G. Cheaib
- Subjects
medicine.medical_specialty ,Upper tract ,business.industry ,Urology ,medicine ,In patient ,business ,Urothelial carcinoma - Abstract
INTRODUCTION AND OBJECTIVES:Patients with upper tract urothelial carcinoma (UTUC) treated with radical nephroureterectomy (RNU) are at risk of disease recurrence in the bladder. The use of neoadjuv...
- Published
- 2019
43. MP39-01 GEOGRAPHIC DISPARITIES IN UROLOGIC CANCER MORTALITY: WHERE SHOULD WE TEST TELEMEDICINE INTERVENTIONS?
- Author
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Phillip M. Pierorazio, Frank C. Curriero, Stephen A. Boorjian, C.J. Stimson, Hiten D. Patel, Paige E. Nichols, Raevti Bole, Anne E. Corrigan, Michael H. Johnson, and Matthew T. Gettman
- Subjects
Telemedicine ,medicine.medical_specialty ,business.industry ,Urology ,Mortality rate ,Urologic cancer ,Emergency medicine ,Psychological intervention ,Medicine ,business ,Test (assessment) - Abstract
INTRODUCTION AND OBJECTIVES:Poor access to local urology care is associated with high urologic cancer mortality rates (MR). The use of remote video visits (a form of telemedicine) has been proposed...
- Published
- 2019
44. MP50-20 IMPLICATIONS OF DISCORDANT DIAGNOSTIC TO FINAL SURGICAL PATHOLOGY IN HIGH-GRADE UPPER TRACT UROTHELIAL CARCINOMA
- Author
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Ross Liao, Mohit Gupta, Max Kates, Joseph G. Cheaib, Michael H. Johnson, Jean H. Hoffman-Censits, Noah M. Hahn, Phillip M. Pierorazio, and Trinity J. Bivalacqua
- Subjects
Surgical pathology ,medicine.medical_specialty ,Upper tract ,business.industry ,Urology ,medicine ,Radiology ,business ,Urothelial carcinoma - Abstract
INTRODUCTION AND OBJECTIVES:Accurate diagnostics to guide management are a technical challenge for many patients with upper tract urothelial carcinoma (UTUC). Some patients who undergo radical neph...
- Published
- 2019
45. MP14-10 USE OF DELAYED INTERVENTION FOR SMALL RENAL MASSES INITIALLY MANAGED WITH ACTIVE SURVEILLANCE
- Author
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Michael H. Johnson, Hiten D. Patel, Ridwan Alam, Mohamed Allaf, Mohit Gupta, Michael A. Gorin, Phillip M. Pierorazio, Peter Chang, James M. McKiernan, Andrew J. Wagner, and Alice Semerjian
- Subjects
medicine.medical_specialty ,Delayed intervention ,business.industry ,Urology ,Emergency medicine ,medicine ,business - Published
- 2019
46. PD58-01 RECOMMENDATIONS FOR OPIOID PRESCRIBING AFTER MINIMALLY INVASIVE UROLOGICAL SURGERY: A MULTIDISCIPLINARY EXPERT PANEL CONSENSUS
- Author
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Christian P. Pavlovich, Mohit Gupta, Anastasia Padilla, Michael A. Gorin, Natasha Gupta, Hiten D. Patel, Misop Han, Brian R. Matlaga, Farzana A. Faisal, Michael H. Johnson, Phillip M. Pierorazio, Alexa R. Meyer, Kevin Koo, Whitney Sharpe, and Mohamad E. Allaf
- Subjects
Position statement ,medicine.medical_specialty ,business.industry ,Urology ,Opioid use ,030232 urology & nephrology ,Opioid prescribing ,Urological surgery ,03 medical and health sciences ,0302 clinical medicine ,Multidisciplinary approach ,medicine ,Intensive care medicine ,business - Abstract
INTRODUCTION AND OBJECTIVES:Opioids are frequently overprescribed after urological surgery. The 2018 AUA position statement on opioid use suggests using the lowest dose and potency to achieve post-...
- Published
- 2019
47. MP05-02 CTC AND CTDNA ASSAYS REVEAL COMPLIMENTARY INFORMATION FOR METASTATIC UROTHELIAL CANCER PATIENTS
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Max Kates, Trinity J. Bivalacqua, Michael A. Gorin, Michael H. Johnson, Kenneth J. Pienta, Heather J. Chalfin, David J. McConkey, Noah M. Hahn, Stephanie Glavaris, and Megan Hoi Yan Fong
- Subjects
Cystectomy ,Oncology ,medicine.medical_specialty ,business.industry ,Urology ,medicine.medical_treatment ,Internal medicine ,medicine ,Urothelial cancer ,Gold standard (test) ,business ,Urothelial carcinoma - Abstract
INTRODUCTION AND OBJECTIVES:Despite considerable advances in treatment of urothelial carcinoma (UC), metastatic disease remains life-threatening and the gold standard of cystectomy is a morbid proc...
- Published
- 2019
48. Selecting Patients with Small Renal Masses for Active Surveillance: A Domain Based Score from a Prospective Cohort Study
- Author
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Michael H. Johnson, Ridwan Alam, Andrew A. Wagner, Ayodeji E. Sotimehin, Mohamad E. Allaf, Michael A. Gorin, Hiten D. Patel, Phillip M. Pierorazio, James M. McKiernan, and Peter Chang
- Subjects
Male ,medicine.medical_specialty ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Kaplan-Meier Estimate ,Risk Assessment ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Predictive Value of Tests ,Internal medicine ,medicine ,Carcinoma ,Renal mass ,Humans ,Neoplasm Invasiveness ,Prospective Studies ,Registries ,Prospective cohort study ,Watchful Waiting ,Aged ,Neoplasm Staging ,Proportional Hazards Models ,Kidney ,business.industry ,Patient Selection ,A domain ,Middle Aged ,medicine.disease ,Survival Analysis ,Kidney Neoplasms ,Tumor Burden ,medicine.anatomical_structure ,Area Under Curve ,Disease Progression ,Female ,business ,Risk assessment ,Watchful waiting - Abstract
We sought to identify predictors of active surveillance in a prospective cohort study of patients with a small renal mass demonstrating favorable outcomes. We generated a summary score to discriminate patients selected for active surveillance or primary intervention.We analyzed the records of 751 patients from 2009 to 2018 who were enrolled in the DISSRM (Delayed Intervention and Surveillance for Small Renal Masses) Registry to compare active surveillance and primary intervention in the domains of demographics, tumor characteristics, comorbidity and patient reported quality of life. Regression models were created to assess univariable and multivariable model discrimination by the AUC and quality by the AIC (Akaike information criterion). The DISSRM score was based on the most predictive combination of variables and validated for its association with overall survival by Kaplan-Meier survival curves and a Cox proportional hazards regression model.Of the patients 410 (55%) elected active surveillance and 341 (45%) elected primary intervention. Of the domains patient age, the Charlson comorbidity index, tumor diameter and the SF-12® Physical Component Score had the greatest discrimination for clinical selection into active surveillance. These domains made up the DISSRM score (AUC 0.801). The maximum DISSRM score was 7. The average score for active surveillance was 4.19 (median 4, IQR 2-6) and 72% of scores were 4 or greater. The average score for primary intervention was 3.03 (median 3, IQR 1-5) and 63% of scores were 3 or less. A higher DISSRM score was associated with worse overall survival, for example a score of 6-7 had a HR of 10.45 (95% CI 1.25-87.49, p = 0.03).The DISSRM score represents a measure of oncologic and competing risks of death in various important domains in patients with a small renal mass. It could be used to guide the management selection. Patients with intermediate scores that express illness uncertainty may require additional workup, such as confirmatory biopsy, to reach a treatment decision.
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- 2019
49. Re: Use of Delayed Intervention for Small Renal Masses Initially Managed with Active Surveillance
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Michael H. Johnson, Phillip M. Pierorazio, Mohit Gupta, Ridwan Alam, James M. McKiernan, Alice Semerjian, Hiten D. Patel, Andrew A. Wagner, Peter Chang, Mohamad E. Allaf, Michael A. Gorin, Biomedical Engineering and Physics, APH - Quality of Care, APH - Personalized Medicine, Urology, and CCA - Cancer Treatment and Quality of Life
- Subjects
Male ,medicine.medical_specialty ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,03 medical and health sciences ,Text mining ,0302 clinical medicine ,Interquartile range ,Biopsy ,medicine ,Carcinoma ,Humans ,Intensive care medicine ,Carcinoma, Renal Cell ,Aged ,Percutaneous cryoablation ,medicine.diagnostic_test ,business.industry ,Middle Aged ,medicine.disease ,Nephrectomy ,Kidney Neoplasms ,Surgery ,Oncology ,Delayed intervention ,030220 oncology & carcinogenesis ,Female ,Functional status ,business ,Kidney cancer - Abstract
A number of patients who elect active surveillance of their small renal masses (≤4 cm) subsequently pursue delayed intervention (DI). The indications, timing, and rates of DI have not been well determined prospectively.Data from Delayed Intervention and Surveillance for Small Renal Masses, a prospective, multi-institutional registry was utilized to evaluate factors associated with DI between 2009 and 2018.Of 371 patients enrolled in AS, 46 (12.4%) pursued DI. Patients who pursued DI spent a median 12 months on surveillance (interquartile range 5.5-23.6), had better functional status (P0.01), and had greater median growth rate vs. those who remained on surveillance (0.38 vs. 0.05, P0.001). Indications for intervention included growth rate0.5 cm/y for 23 (50%) patients, patient preference for 22 (47.8%) patients, and qualification for renal transplant in 1 (2.2%) patient. Thirty-two patients (69.6%) underwent nephron-sparing surgery, 5 (10.9%) underwent radical nephrectomy, and 9 (19.6%) underwent percutaneous cryoablation. Renal mass biopsy was utilized in 37 (11.4%) and 15 (32.7%) patients in the AS and DI arms, respectively (P = 0.04). No patients experienced metastatic progression or died of kidney cancer.As nearly 50% of patients pursue DI secondary to anxiety in the absence of clinical progression, comprehensive counseling is essential to determine if patients are suitable for a surveillance protocol. AS remains a safe initial management option for many patients but may not be a durable strategy for patients who are acceptable surgical candidates with an extended life expectancy. DI does not compromise oncologic outcomes or limit treatment options.
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- 2019
50. Surgical removal of renal tumors with low metastatic potential based on clinical radiographic size: A systematic review of the literature
- Author
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Michael A. Gorin, Mohit Gupta, Michael H. Johnson, Christian P. Pavlovich, Hiten D. Patel, Phillip M. Pierorazio, Mohamad E. Allaf, and Alice Semerjian
- Subjects
Male ,medicine.medical_specialty ,Urology ,Radiography ,030232 urology & nephrology ,Surgical pathology ,03 medical and health sciences ,Tumor grade ,0302 clinical medicine ,Renal cell carcinoma ,Surgical removal ,Medicine ,Humans ,Tumor size ,business.industry ,Incidence (epidemiology) ,Histology ,medicine.disease ,Kidney Neoplasms ,Tumor Burden ,Oncology ,030220 oncology & carcinogenesis ,Female ,Radiology ,Neoplasm Grading ,business - Abstract
Introduction Many patients with small renal masses (SRM) undergo surgical resection of benign and potentially indolent renal masses. We review the available literature to quantify the proportion of renal tumors that are low-risk based on clinical radiographic size, and quantify the number of low-risk masses surgically removed in the United States. Methods We systematically reviewed the literature for studies including pathologic findings after excision of renal masses. Inclusion criteria required studies capture both benign and malignant histology at surgical pathology, tumor grade, and stratification by radiographic tumor size. We queried our institutional database using the same parameters. Meta-analysis results were applied to SEER incidence and management data for renal masses. Very-low-risk tumors were defined as benign or grade 1 cT1a, and low-risk tumors as benign, grade 1, or grade 2 cT1a. Results A total of 733 titles were reviewed at title screening with 6 full text articles and our institutional database included for meta-analysis. Pooled estimates of benign, very-low-risk, and low-risk tumors were stratified by tumor size: ≤2 cm (25.5%, 40.1%, and 89.3%), 2 to 3 cm (21.2%, 34.1%, and 84.5%), 3 to 4 cm (16.1%, 26.6%, and 77.1%), 4 to 6 cm (11.9%, 23.8%, and 66.4%), and >6 cm (7.2%, 12.6%, and 50.3%). An estimated 3,300 benign, 5,400 very-low-risk, and 13,600 low-risk SRMs were resected in 2014 in the United States. Conclusion A substantial portion of patients with SRM are undergoing surgical excision despite harboring tumors of low metastatic potential. The rate of high-grade histology increased with increasing clinical radiographic size, which can be used in counseling and decision-making regarding placement on active surveillance. The number of low-risk SRM removed annually in the United States increased from 8,500 in 2000 to 13,600 in 2014 with stabilization in recent years.
- Published
- 2018
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