14 results on '"Barlow Lynch"'
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2. Supplementary Table 2 from Relationships between Circulating and Intraprostatic Sex Steroid Hormone Concentrations
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Ann W. Hsing, Paul H. Levine, Isabell A. Sesterhann, Michael J. Manyak, Peter R. Carroll, Ladan Zolfghari, George P. Hemstreet, Yu-Tang Gao, Eric Emanuel, Shelley Niwa, Cindy Ke Zhou, Roni T. Falk, Barlow Lynch, Carmela C. Veneroso, Muhannad Hafi, Ruth M. Pfeiffer, Shannon N. Wood, Frank Z. Stanczyk, and Michael B. Cook
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Supplementary Table 2: Reproducibility of average tissue hormone assays by zone and overall from a pilot study of 30 men recruited at George Washington University Medical Center that included a total of 171 prostate biopsies.
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- 2023
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3. Supplementary Table 1 from Relationships between Circulating and Intraprostatic Sex Steroid Hormone Concentrations
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Ann W. Hsing, Paul H. Levine, Isabell A. Sesterhann, Michael J. Manyak, Peter R. Carroll, Ladan Zolfghari, George P. Hemstreet, Yu-Tang Gao, Eric Emanuel, Shelley Niwa, Cindy Ke Zhou, Roni T. Falk, Barlow Lynch, Carmela C. Veneroso, Muhannad Hafi, Ruth M. Pfeiffer, Shannon N. Wood, Frank Z. Stanczyk, and Michael B. Cook
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Supplementary Table 1: Reproducibility of serum and tissue hormone assays used for the main analysis
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- 2023
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4. Supplementary Table 4 from Relationships between Circulating and Intraprostatic Sex Steroid Hormone Concentrations
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Ann W. Hsing, Paul H. Levine, Isabell A. Sesterhann, Michael J. Manyak, Peter R. Carroll, Ladan Zolfghari, George P. Hemstreet, Yu-Tang Gao, Eric Emanuel, Shelley Niwa, Cindy Ke Zhou, Roni T. Falk, Barlow Lynch, Carmela C. Veneroso, Muhannad Hafi, Ruth M. Pfeiffer, Shannon N. Wood, Frank Z. Stanczyk, and Michael B. Cook
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Supplementary Table 4: Multivariable Linear Regressions between Log Continous Serum and Tissue Hormones Stratified by Race
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- 2023
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5. Supplementary Table 5 from Relationships between Circulating and Intraprostatic Sex Steroid Hormone Concentrations
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Ann W. Hsing, Paul H. Levine, Isabell A. Sesterhann, Michael J. Manyak, Peter R. Carroll, Ladan Zolfghari, George P. Hemstreet, Yu-Tang Gao, Eric Emanuel, Shelley Niwa, Cindy Ke Zhou, Roni T. Falk, Barlow Lynch, Carmela C. Veneroso, Muhannad Hafi, Ruth M. Pfeiffer, Shannon N. Wood, Frank Z. Stanczyk, and Michael B. Cook
- Abstract
Supplementary Table 5: Multivariable Linear Regressions between Log Continous Serum and Tissue Hormones Stratified by Median Age at Blood Draw
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- 2023
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6. Data from Relationships between Circulating and Intraprostatic Sex Steroid Hormone Concentrations
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Ann W. Hsing, Paul H. Levine, Isabell A. Sesterhann, Michael J. Manyak, Peter R. Carroll, Ladan Zolfghari, George P. Hemstreet, Yu-Tang Gao, Eric Emanuel, Shelley Niwa, Cindy Ke Zhou, Roni T. Falk, Barlow Lynch, Carmela C. Veneroso, Muhannad Hafi, Ruth M. Pfeiffer, Shannon N. Wood, Frank Z. Stanczyk, and Michael B. Cook
- Abstract
Background: Sex hormones have been implicated in prostate carcinogenesis, yet epidemiologic studies have not provided substantiating evidence. We tested the hypothesis that circulating concentrations of sex steroid hormones reflect intraprostatic concentrations using serum and adjacent microscopically verified benign prostate tissue from prostate cancer cases.Methods: Incident localized prostate cancer cases scheduled for surgery were invited to participate. Consented participants completed surveys, and provided resected tissues and blood. Histologic assessment of the ends of fresh frozen tissue confirmed adjacent microscopically verified benign pathology. Sex steroid hormones in sera and tissues were extracted, chromatographically separated, and then quantitated by radioimmunoassays. Linear regression was used to account for variations in intraprostatic hormone concentrations by age, body mass index, race, and study site, and subsequently to assess relationships with serum hormone concentrations. Gleason score (from adjacent tumor tissue), race, and age were assessed as potential effect modifiers.Results: Circulating sex steroid hormone concentrations had low-to-moderate correlations with, and explained small proportions of variations in, intraprostatic sex steroid hormone concentrations. Androstane-3α,17β-diol glucuronide (3α-diol G) explained the highest variance of tissue concentrations of 3α-diol G (linear regression r2 = 0.21), followed by serum testosterone and tissue dihydrotestosterone (r2 = 0.10), and then serum estrone and tissue estrone (r2 = 0.09). There was no effect modification by Gleason score, race, or age.Conclusions: Circulating concentrations of sex steroid hormones are poor surrogate measures of the intraprostatic hormonal milieu.Impact: The high exposure misclassification provided by circulating sex steroid hormone concentrations for intraprostatic levels may partly explain the lack of any consistent association of circulating hormones with prostate cancer risk. Cancer Epidemiol Biomarkers Prev; 26(11); 1660–6. ©2017 AACR.
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- 2023
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7. Relationships between Circulating and Intraprostatic Sex Steroid Hormone Concentrations
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Ladan Zolfghari, Shelley Niwa, Carmela Veneroso, Barlow Lynch, Paul H. Levine, Ann W. Hsing, Michael J. Manyak, Peter R. Carroll, Isabell A. Sesterhann, George P. Hemstreet, Ruth M. Pfeiffer, Cindy Ke Zhou, Michael B. Cook, Muhannad Hafi, Yu-Tang Gao, Roni T. Falk, Shannon N. Wood, Eric Emanuel, and Frank Z. Stanczyk
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Urologic Diseases ,Male ,0301 basic medicine ,Aging ,medicine.medical_specialty ,Epidemiology ,Radioimmunoassay ,Estrone ,Medical and Health Sciences ,Article ,03 medical and health sciences ,Prostate cancer ,chemistry.chemical_compound ,0302 clinical medicine ,Clinical Research ,Prostate ,Sex Hormone-Binding Globulin ,Internal medicine ,medicine ,2.1 Biological and endogenous factors ,Humans ,Aetiology ,Gonadal Steroid Hormones ,Cancer ,Aged ,business.industry ,Prostate Cancer ,Prostatic Neoplasms ,Middle Aged ,medicine.disease ,030104 developmental biology ,Endocrinology ,medicine.anatomical_structure ,Oncology ,chemistry ,Sex steroid ,030220 oncology & carcinogenesis ,Dihydrotestosterone ,business ,Hormone ,medicine.drug - Abstract
Background: Sex hormones have been implicated in prostate carcinogenesis, yet epidemiologic studies have not provided substantiating evidence. We tested the hypothesis that circulating concentrations of sex steroid hormones reflect intraprostatic concentrations using serum and adjacent microscopically verified benign prostate tissue from prostate cancer cases. Methods: Incident localized prostate cancer cases scheduled for surgery were invited to participate. Consented participants completed surveys, and provided resected tissues and blood. Histologic assessment of the ends of fresh frozen tissue confirmed adjacent microscopically verified benign pathology. Sex steroid hormones in sera and tissues were extracted, chromatographically separated, and then quantitated by radioimmunoassays. Linear regression was used to account for variations in intraprostatic hormone concentrations by age, body mass index, race, and study site, and subsequently to assess relationships with serum hormone concentrations. Gleason score (from adjacent tumor tissue), race, and age were assessed as potential effect modifiers. Results: Circulating sex steroid hormone concentrations had low-to-moderate correlations with, and explained small proportions of variations in, intraprostatic sex steroid hormone concentrations. Androstane-3α,17β-diol glucuronide (3α-diol G) explained the highest variance of tissue concentrations of 3α-diol G (linear regression r2 = 0.21), followed by serum testosterone and tissue dihydrotestosterone (r2 = 0.10), and then serum estrone and tissue estrone (r2 = 0.09). There was no effect modification by Gleason score, race, or age. Conclusions: Circulating concentrations of sex steroid hormones are poor surrogate measures of the intraprostatic hormonal milieu. Impact: The high exposure misclassification provided by circulating sex steroid hormone concentrations for intraprostatic levels may partly explain the lack of any consistent association of circulating hormones with prostate cancer risk. Cancer Epidemiol Biomarkers Prev; 26(11); 1660–6. ©2017 AACR.
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- 2017
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8. Circulating and Intraprostatic Sex Steroid Hormonal Profiles in Relation to Male Pattern Baldness and Chest Hair Density Among Men Diagnosed with Localized Prostate Cancers
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Eric Emanuel, Roni T. Falk, Cindy Ke Zhou, Ladan Zolfghari, Frank Z. Stanczyk, Shelley Niwa, Barlow Lynch, Peter R. Carroll, Michael J. Manyak, George P. Hemstreet, Paul H. Levine, Yu-Tang Gao, Michael B. Cook, Carmela Veneroso, Isabell A. Sesterhenn, Ann W. Hsing, and Muhannad Hafi
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Male ,Aging ,Physiology ,Pilot Projects ,030207 dermatology & venereal diseases ,Prostate cancer ,0302 clinical medicine ,Sex hormone-binding globulin ,Chest hair ,80 and over ,2.2 Factors relating to the physical environment ,Aetiology ,Gonadal Steroid Hormones ,Cancer ,Aged, 80 and over ,biology ,Prostate Cancer ,Middle Aged ,Thorax ,medicine.anatomical_structure ,Oncology ,030220 oncology & carcinogenesis ,Dihydrotestosterone ,male pattern baldness ,Male-pattern baldness ,Hair Follicle ,medicine.drug ,Urologic Diseases ,medicine.medical_specialty ,medicine.drug_class ,Urology ,Clinical Sciences ,Oncology and Carcinogenesis ,prostate tissue ,Article ,Paediatrics and Reproductive Medicine ,03 medical and health sciences ,Clinical Research ,Internal medicine ,medicine ,Humans ,Oncology & Carcinogenesis ,Aged ,business.industry ,Prostatic Neoplasms ,Alopecia ,medicine.disease ,Androgen ,Estrogen ,chest hair density ,Endocrinology ,Hair loss ,Sex steroid ,biology.protein ,sex steroid hormones ,business ,serum ,Biomarkers ,Follow-Up Studies ,Hair - Abstract
BACKGROUND Prospective cohort studies of circulating sex steroid hormones and prostate cancer risk have not provided a consistent association, despite evidence from animal and clinical studies. However, studies using male pattern baldness as a proxy of early-life or cumulative androgen exposure have reported significant associations with aggressive and fatal prostate cancer risk. Given that androgens underlie the development of patterned hair loss and chest hair, we assessed whether these two dermatological characteristics were associated with circulating and intraprostatic concentrations of sex steroid hormones among men diagnosed with localized prostate cancer. METHODS We included 248 prostate cancer patients from the NCI Prostate Tissue Study, who answered surveys and provided a pre-treatment blood sample as well as fresh frozen adjacent normal prostate tissue. Male pattern baldness and chest hair density were assessed by trained nurses before surgery. General linear models estimated geometric means and 95% confidence intervals (95%CIs) of each hormone variable by dermatological phenotype with adjustment for potential confounding variables. Subgroup analyses were performed by Gleason score (
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- 2017
9. Monitoring of health-related quality of life and symptoms in prostate cancer survivors: a randomized trial
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Kimberly Davis, Sean P. Collins, Michael Porrazzo, Barlow Lynch, Sara Red, Michael Bass, Sofiya Penek, David L. Dawson, Kathryn L. Taylor, John H. Lynch, and Scott P. Kelly
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Male ,medicine.medical_specialty ,Urinary system ,law.invention ,Limited access ,Prostate cancer ,Quality of life ,Randomized controlled trial ,law ,Intervention (counseling) ,medicine ,Humans ,Pharmacology (medical) ,Survivors ,Aged ,Monitoring, Physiologic ,Health related quality of life ,business.industry ,Prostatic Neoplasms ,Middle Aged ,medicine.disease ,Telephone ,Oncology ,Quality of Life ,Physical therapy ,Self Report ,Sexual function ,business - Abstract
BACKGROUND Routine symptom and health-related quality of life (HRQOL) assessments can engage patients, give provider feedback, and improve doctor/patient communication. OBJECTIVE We compared the impact of a technology-assisted symptom monitoring system versus usual care on HRQOL and doctor/patient communication in early-stage prostate cancer (PCa) survivors. METHODS Men (N = 94) were on average 62-years old, mostly African American (AA; 61.7%), and 10-19 months post-treatment. They were randomized to symptom monitoring plus feedback (SM + F; n = 49) or usual care (UC; n = 45). SM+F participants completed a 12-item telephoneassisted monitoring intervention. All participants completed a baseline and 2 follow-up interviews. RESULTS Among the SM+F participants, perceptions of the monitoring system were positive: 97.1% endorsed it as easy/very easy to use and 85% felt all patients could benefit from it. At baseline, men reported favorable general and cancer-specific HRQOL and doctor/patient communication, but poorer urinary and sexual function. Although there was no overall impact of the intervention, post hoc exploratory analyses indicated that among AA men, those who received SM+F improved relative to UC on doctor/patient communication (P < .05), general HRQOL (P < .06), and sexual function (P < .05). LIMITATIONS Variability in survivor follow-up care, limited access to eligible participants, and minimal physician training in the use of reports likely decreased physician investment. CONCLUSION Overall, PCa survivors were receptive to this monitoring system. Exploratory analyses suggest that this technology-assisted monitoring system may be of particular benefit to African American men. Additional studies with larger samples, more intervention time-points, and increased physician training are needed to strengthen the intervention's impact.
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- 2013
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10. Disclosure of diagnosis and treatment among early stage prostate cancer survivors
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Trent Jackson, Kimberly Davis, Kathryn L. Taylor, James B. Regan, Barlow Lynch, David L Dawson, John H. Lynch, Arnold M. Kwart, and Lisa Haisfield
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Oncology ,Male ,medicine.medical_specialty ,genetic structures ,Stage prostate cancer ,Health Status ,Urinary incontinence ,Disclosure ,Article ,Social support ,Prostate cancer ,Quality of life ,Erectile Dysfunction ,Internal medicine ,medicine ,Fecal incontinence ,Humans ,Survivors ,Aged ,Health related quality of life ,Gynecology ,Motivation ,business.industry ,Prostatic Neoplasms ,Social Support ,social sciences ,General Medicine ,medicine.disease ,humanities ,United States ,Erectile dysfunction ,Urinary Incontinence ,Quality of Life ,medicine.symptom ,business ,human activities ,Fecal Incontinence - Abstract
Increased long-term survival rates have led to a greater focus on the health-related quality of life (HRQL) of prostate cancer survivors. This study assessed the motivations of prostate cancer survivors for disclosing their diagnosis and treatment to close others, and their perceptions of their own and others' responses to the disclosure.Prostate cancer survivors (N=35) who were 24-36 months post-treatment for localized disease completed a semi-structured telephone interview. Open-ended questions concerning disclosure of men's diagnosis and treatment and their perceptions of their own and others' reactions to the disclosure were included.Regarding men's motivations for disclosing their diagnosis and treatment, men reported that they were seeking social support (SS) and that others had a 'right to know.' Further, the receipt of emotional support and feeling a sense of positive emotions were common following disclosure about their diagnosis and treatment. Participants reported continuing to discuss their treatment side effects 2-3 years post-treatment.Prostate cancer survivors reported an overall positive and supportive response following the disclosure of their diagnosis and treatment. Further examination of the relationship between SS and HRQL will be necessary to identify interventions to enhance the well-being of this growing population of survivors.Providers need to be aware of the extent and long-term nature of the side effects following treatment for prostate cancer. If providers encourage men to talk about their diagnosis, treatment, and side effects, providers may better understand men's experience with the disease, and men may be more likely to accept these commonly experienced changes, as well as seek treatment for them. These efforts may result in improved quality of life for survivors of prostate cancer.
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- 2008
11. Increasing the number of biopsy cores improves the concordance of biopsy Gleason score to prostatectomy Gleason score
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Christopher L. Coogan, Kalyan C. Latchamsetty, Christopher R. Porter, Barlow Lynch, Jason M. Greenfield, and John M. Corman
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Nephrology ,Adult ,Male ,medicine.medical_specialty ,Urology ,Concordance ,medicine.medical_treatment ,urologic and male genital diseases ,Sensitivity and Specificity ,Prostate cancer ,Internal medicine ,Biopsy ,medicine ,Humans ,Aged ,Retrospective Studies ,Prostatectomy ,medicine.diagnostic_test ,business.industry ,Biopsy, Needle ,Prostate ,Prostatic Neoplasms ,Middle Aged ,medicine.disease ,Surgery ,Numero sign ,Prostate surgery ,Histopathology ,business - Abstract
OBJECTIVE To evaluate taking more biopsy cores for predicting the radical prostatectomy (RP) Gleason score compared with the biopsy Gleason score, as although random sextant biopsies are the standard for a tissue diagnosis of prostate cancer, and taking more biopsies increases the detection rate, it is uncertain whether taking more cores improves the prediction of the RP Gleason score. PATIENTS AND METHODS We analysed retrospectively 404 patients from three centres (Seattle 162, Washington 107 and Chicago 135) who had RP for prostate cancer. Six, eight or 10 biopsies were taken based on the physician's preference and the patient's characteristics. RESULTS Before RP, 158 (39%) patients had six, 65 (16%) had eight and 181 (45%) had 10 biopsy cores taken. The accuracy of the Gleason sum of the three groups was 65/158 (41%), 26/65 (40%) and 104/181 (57.5%), respectively (P
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- 2005
12. Long-term outcome of prostatic stent treatment for benign prostatic hyperplasia
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Ahmad Akbari, Rei K. Chiou, Barlow Lynch, Rodney J. Taylor, Sally Foley, and Wen S. Chen
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Male ,medicine.medical_specialty ,Time Factors ,Urology ,medicine.medical_treatment ,Prostatic Hyperplasia ,Bladder outlet obstruction ,Prostate ,Medicine ,Prostatic stent ,Humans ,Prostatism ,cardiovascular diseases ,Aged ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Urinary retention ,Stent ,Cystoscopy ,Middle Aged ,equipment and supplies ,Surgery ,Urinary Bladder Neck Obstruction ,surgical procedures, operative ,medicine.anatomical_structure ,Urethra ,Stents ,medicine.symptom ,business ,Follow-Up Studies - Abstract
Objectives. To evaluate the long-term result of prostatic stent treatment for patients with benign prostatichyperplasia (BPH). Methods. We reviewed our experience with prostatic stents in 24 patients with bladder outlet obstruction caused by BPH for whom up to 63 months of follow-up data were available. Results. Prostatic stents were successfully placed in 24 of 25 patients enrolled in the study. All 9 patientstreated for urinary retention voided spontaneously after stent placement. In 14 (93%) of 15 patients with nonretention, voiding symptoms decreased by 50% or more. The stent was removed in 9 patients for persistence of symptoms, symptom recurrence, or stent migration. Nine patients died of unrelated causes during the follow-up period. The stents functioned adequately in these patients until death. In the remaining 6 patients, the stent was still in place at the last follow-up visit (range 12 to 52 months, average 35) after placement, and their Madsen-Iversen symptom scores ranged from 3 to 10. Fourteen patients underwent cystoscopy 1 to 37 months after stent placement. Epithelium did not completely cover the stent in any of these patients; however, no stone formation was noted. Conclusions. Prostatic stents can be effective in relieving bladder outlet obstruction caused by BPH. They appear to be most useful in patients at high surgical risk and with a limited life expectancy. However, stent removal, which can be difficult, may be required in more than one-third of patients. We recommend prostatic stent placement primarily in patients who would otherwise be relegated to an indwelling catheter.
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- 1996
13. Randomized comparison of balloon dilation and transurethral incision for treatment of symptomatic benign prostatic hyperplasia
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Barlow Lynch, John J. Horan, Rei K. Chiou, Joseph E. Binard, Mary E. Ebersole, and Yahn K. Chiou
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Male ,medicine.medical_specialty ,Adenoma ,Urology ,medicine.medical_treatment ,Prostatic Hyperplasia ,law.invention ,Catheterization ,Bladder outlet obstruction ,Postoperative Complications ,Randomized controlled trial ,law ,Prostate ,medicine ,Humans ,Aged ,Prostatectomy ,medicine.diagnostic_test ,business.industry ,Hyperplasia ,Middle Aged ,medicine.disease ,Surgery ,Endoscopy ,Urodynamics ,medicine.anatomical_structure ,Treatment Outcome ,Balloon dilation ,business ,Follow-Up Studies - Abstract
The concept of relieving the symptoms of benign prostatic hyperplasia (BPH) by dilating the urethral has existed for centuries. Thirty patients with a clinically estimated prostate gland size of 25 g or less were randomized to either balloon dilation (BDP) or transurethral incision of the prostate (TUIP). The mean pretreatment Madsen-Iverson symptom scores in the two groups were 15.0 +/- 4.9 (SD) and 15.4 +/- 4.4, respectively. The early response rates were 87% fo BDP and 86% for TUIP, with the mean symptom scores declining to 3.4 +/- 2.8 after dilation and 4.2 +/- 6.6 after incision. Among the 14 patients who initially responded to BDP, 2 have been lost to follow-up, 1 died of unrelated causes at 17 months with no urinary symptoms, 2 remain in response at 32 and 38 months, and the other 9 (75% of those available for evaluation) have developed recurrences. Among the 12 patents who responded to TUIP, 2 have been lost to follow-up, 8 remain in response at 14 to 48 months, and 2 (20%) developed recurrences by 44 months of follow-up. In the short term, both BDP and TUIP are effective for treating bladder outlet obstruction in men with relatively small prostates. However, the effect of dilation appears to be less durable than that of incision.
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- 1994
14. Intrarenal pancreatic cyst
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Barlow Lynch, Mitchell Edson, and Denton Allman
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Adult ,medicine.medical_specialty ,Kidney ,Flank pain ,business.industry ,Urology ,medicine.medical_treatment ,Choristoma ,Kidney Diseases, Cystic ,medicine.disease ,Kidney Neoplasms ,Nephrectomy ,Surgery ,medicine.anatomical_structure ,Diabetes mellitus ,Pancreatic cyst ,medicine ,Renal mass ,Humans ,Female ,Cyst ,business ,Pancreas - Abstract
A case report of intrarenal true cyst of the pancreas is presented. The patient presented with flank pain. Her diabetes and hypertension were well-controlled. The cause of the pain was presumed to be a cystic renal mass, which proved to be of pancreatic origin only after the pathologic confirmation from the nephrectomy specimen.
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- 1991
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