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Directory of Authors from the Journal and their last article.

Kenneth M KernenView Articles

Volume 17, Number 4Original Research

The 4Kscore® Test Reduces Prostate Biopsy Rates in Community and Academic Urology Practices

Jason HafronStephen M ZappalaDipen J ParekhDanielle OsterhoutJeffrey SchockRandy M ChudlerGregory M OldfordKenneth M KernenBadrinath R Konety

There is significant concern regarding prostate cancer screening because of the potential for overdiagnosis and overtreatment of men who are discovered to have abnormal prostate specific antigen (PSA) levels and/or digital rectal examination (DRE) results. The 4Kscore® Test (OPKO Diagnostics, LLC) is a blood test that utilizes four kallikrein levels plus clinical information in an algorithm to calculate an individual’s percentage risk (< 1% to > 95%) for aggressive prostate cancer (Gleason score ≥ 7) on prostate biopsy. The 4Kscore Test, as a follow-up test after abnormal PSA and/or DRE test results, has been shown to improve the specificity for predicting the risk of aggressive prostate cancer and reduce unnecessary prostate biopsies. A clinical utility study was conducted to assess the influence of the 4Kscore Test on the decision to perform prostate biopsies in men referred to urologists for abnormal PSA and/or DRE results. The study population included 611 patients seen by 35 academic and community urologists in the United States. Urologists ordered the 4Kscore Test as part of their assessment of men referred for abnormal PSA and/or DRE test results. Results for the patients were stratified into low risk (< 7.5%), intermediate risk (7.5%-19.9%), and high risk (≥ 20%) for aggressive prostate cancer. The 4Kscore Test results influenced biopsy decisions in 88.7% of the men. Performing the 4Kscore Test resulted in a 64.6% reduction in prostate biopsies in patients; the actual percentage of cases not proceeding to biopsy were 94.0%, 52.9%, and 19.0% for men who had low-, intermediate-, and high-risk 4Kscore Test results, respectively. A higher 4Kscore Test was associated with greater likelihood of having a prostate biopsy (P < 0.001). Among the 171 patients who had a biopsy, the 4Kscore risk category is strongly associated with biopsy pathology. The 4Kscore Test, as a follow-up test for an abnormal PSA and/or DRE results, significantly influenced the physician and patient shared decision in clinical practice, which led to a reduction in prostate biopsies while increasing the probability of detecting aggressive cancer. [Rev Urol. 2015;17(4):231-240 doi: 10.3909/riu0699] © 2016 MedReviews®, LLC

Prostate cancerProstate-specific antigen4KscoreGleason scoreDigital rectal examinationBiopsy rateProstate cancer prognosis

Kenneth M PetersView Articles
Kenneth WooView Articles
Kent E WallnerView Articles

Volume 15, Number 3Review Articles

The Case for Hypofractionation of Localized Prostate Cancer

Systematic Review

Winnifred M WongKent E Wallner

An optimal treatment regimen for localized prostate cancer (PCa) is yet to be determined. Increasing evidence reveals a lower a/b ratio for PCa with hypofractionated radiation therapy (HFRT) regimens introduced to exploit this change in therapeutic ratio. HFRT also results in shortened overall treatment times of 4 to 5 weeks, thus reducing staffing and machine burden, and, more importantly, patient stress. This review evaluates pretreatment characteristics, outcomes, and toxicity for 15 HFRT studies on localized PCa. HFRT results in comparable or better biochemical relapse-free survival and toxicity and is a viable option for localized PCa. [Rev Urol. 2013;15(3):113-117 doi: 10.3909/riu0582] © 2013 MedReviews®, LLC

Localized prostate cancerHypofractionationShort-course radiotherapyDose escalation

Kent PerryView Articles
Kent T. PerryView Articles

Volume 23, Number 3Prostate Cancer

Advances in Radical Prostatectomy: A Narrative Review

Austin DryschKathryn E. FinkChalairat Suk-OuichaiMitchell M. HuangKent T. PerryHiten D. PatelAshley E. Ross

Radical prostatectomy (RP) is the mainstay surgical treatment for men with localized prostate cancer. The use of robot-assisted RP (RARP) has specifically allowed for the development of novel techniques to improve postoperative quality of life for patients.

Prostatic neoplasmsProstatectomyRobotic-assisted surgeryrobotic surgical procedures

Kevin M SlawinView Articles
Kevin R RiceView Articles

Volume 12, Number 3Review Articles

Venous Thromboembolism in Urologic Surgery: Prophylaxis, Diagnosis, and Treatment

Treatment Update

Kevin R RiceStephen A BrassellDavid G McLeod

Venous thromboembolism (VTE) represents one of the most common and potentially devastating complications of urologic surgery. With VTE’s rapid onset of symptoms, association with a precipitous clinical course, and high mortality rate, all urologists should be well versed in appropriate prophylaxis, prompt diagnosis, and expeditious treatment. A MEDLINE® search was performed for articles that examined the incidence, diagnosis, and treatment of VTE in urologic surgery. Additional articles were reviewed based on cited references. There is a paucity of prospective studies on VTE in the urologic literature with most recommendations for urologic surgery patients being extrapolated from other surgical disciplines. Retrospective studies place VTE incidence rates in major urologic surgeries among the highest reported—highlighting the importance of thromboprophylaxis. Conversely, VTE was rarely reported in association with endoscopic and laparoscopic procedures making mechanical thromboprophylaxis sufficient. Recent literature reveals delayed VTE occurring after hospital discharge to be a persistent threat despite inpatient preoperative prophylaxis. Computed tomographic angiography has emerged as the test of choice for diagnosing pulmonary embolism, whereas lower extremity duplex sonography is recommended for diagnosing deep venous thrombosis. Traditional angiography is rarely used. Treatment of VTE involves therapeutic anticoagulation for various lengths of time based on presence and reversibility of patient risk factors as well as number of events. Perioperative thromboprophylaxis should be considered in all major urologic surgeries. Urologists should be familiar with incidence rates, recommended prophylaxis, appropriate diagnosis, and treatment recommendations for VTE to minimize morbidity and mortality. The limited number of prospective, randomized, controlled trials evaluating the use of thromboprophylaxis in urologic surgery demonstrates the need for further research. [Rev Urol. 2010;12(2/3):e111-e124 doi: 10.3909/riu0472]

Kevin T McVaryView Articles
Keyur ChavdaView Articles

Volume 17, Number 1Case Review

En Bloc Robot-assisted Laparoscopic Partial Cystectomy, Urachal Resection, and Pelvic Lymphadenectomy for Urachal Adenocarcinoma

Christopher R WilliamsKeyur ChavdaPaul Abrams

Primary adenocarcinomas of the bladder and urachus are extremely rare, accounting for 0.5% to 2.0% of all bladder malignancies. During fetal development, the urachus develops into the median umbilical ligament that stretches from the umbilicus to the bladder. Adenocarcinoma accounts for 90% of all cases of urachal carcinoma. There is no consensus regarding the management of urachal carcinoma. Although the preferred treatment is wide local excision with partial or radical cystectomy, bladder-sparing management is increasing. We report a case of robot-assisted laparoscopic partial cystectomy with en bloc resection of the urachus and bilateral pelvic lymphadenectomy for urachal carcinoma. The robot-assisted laparoscopic approach allowed us to minimize surgical morbidity, postoperative pain, and convalescent time while maintaining the oncologic principle of wide local excision. [Rev Urol. 2015;17(1):46-49 doi: 10.3909/riu0630] © 2015 MedReviews®, LLC

Urachal adenocarcinomaRobotic partial cystectomyPelvic lymphadenectomy

Khaled A ImamView Articles
Khanh N PhamView Articles

Volume 18, Number 2Case Review

Endoscopic Management of Bladder Diverticula

Claudio JeldresKhanh N PhamThomas HeftyJohn M Corman

A 50-year-old man with benign prostatic hyperplasia and urinary retention had a very large diverticulum on the posterior wall of the bladder. The patient was managed with transurethral resection of the prostate and endoscopic fulguration of the bladder diverticulum mucosa using the Orandi technique. There was near-complete resolution of the bladder diverticulum following endoscopic management, obviating the need for bladder diverticulectomy. The patient now empties his bladder, with a postvoid residual ­ 50 mL and the absence of urinary tract infection after 6-month follow-up. We report the successful treatment of a large bladder diverticulum with endoscopic fulguration to near-complete resolution. This minimally invasive technique is a useful alternative in patients unfit for a more extensive surgical approach. [Rev Urol. 2016;18(2):114-117 doi: 10.3909/riu0701] © 2016 MedReviews®, LLC

Bladder diverticulumEndoscopicFulguration

Kiarash MichelView Articles
Kim KillingerView Articles
Kimberley HoylandView Articles

Volume 15, Number 2Review Articles

The Use of Vacuum Erection Devices in Erectile Dysfunction After Radical Prostatectomy

Management Update

Nikhil VasdevKimberley HoylandJames Adshead

The risk of postoperative erectile dysfunction (ED) following radical prostatectomy (RP) is reported to be between 14% and 89%. With an increase in the detection of prostate cancer in younger men, there is a greater emphasis on the appropriate management of ED following RP. A number of options are available to manage ED after RP, including phosphodiesterase-5 inhibitors, intracorporeal injections, intraurethral alprostadil, and vacuum erection devices (VEDs). Penile rehabilitation programs are increasingly used to facilitate the return of natural postoperative erections; the VED is an ideal therapy given that it increases blood flow and oxygenation to the corpora to reverse the changes that result in ED after RP. [Rev Urol. 2013;15(2):67-71 doi: 10.3909/riu0574] © 2013 MedReviews®, LLC

Radical prostatectomyErectile dysfunctionPenile rehabilitationVacuum erection device

Kimberly L CooperView Articles

Volume 22, Number 2Review Articles

Management of Small, Non-obstructing Renal Stones in Adults With Recurrent Urinary Tract Infections

Management Review

Ojas ShahRon GolanKimberly L Cooper

The management of small, non-obstructing renal stones in adults with recurrent lower urinary tract infections remains unclear. Whereas for larger or obstructing stones the decision to intervene becomes clearer, for stones smaller than 5 to 6 mm the decision to intervene requires consideration of multiple factors. This review describes these factors, including history, imaging, laboratory studies, as well as a comprehensive review of the literature. It remains of utmost importance that patients have additional possible etiologies appropriately evaluated and managed prior to intervention for their small renal stones. [Rev Urol. 2020;22(2):52–56] © 2020 MedReviews®, LLC

Percutaneous nephrolithotomyUreteroscopyShockwave lithotripsyNon-obstructing renal stonesRecurrent urinary tract infections

Kirin K SyedView Articles

Volume 18, Number 4Review Articles

Barriers to Accessing Urethroplasty

Treatment Update

David O SussmanGordon A BrownMichael J ConsoloKirin K SyedChristopher RobisonJacob McFaddenDavid I ShalowitzBradley D Figler

Urethroplasty is an effective treatment for men with anterior urethral strictures, but is utilized less frequently than ineffective treatments such as internal urethrotomy. We sought to identify provider-level barriers to urethroplasty. An anonymous online survey was emailed to all Mid-Atlantic American Urological Association members. Six scenarios in which urethroplasty was the most appropriate treatment were presented. Primary outcome was recommendation for urethroplasty in ≥ three clinical scenarios. Other factors measured include practice zip code, urethroplasty training, and proximity to a urethroplasty surgeon. Multivariate logistic regression identified factors associated with increased likelihood of urethroplasty recommendation. Of 670 members emailed, 109 (16%) completed the survey. Final analysis included 88 respondents. Mean years in practice was 17.2. Most respondents received formal training in urethroplasty: 43 (49%) in residency, 5 (6%) in fellowship, and 10 (11%) in both; 48 respondents (55%) had a urethroplasty surgeon in their practice, whereas 18 (20%) had a urethroplasty surgeon within 45 minutes of his or her primary practice location. The only covariate that was associated with an increased likelihood of recommending urethroplasty in ≥ three scenarios was formal urethroplasty training. Most members (68%) reported no barriers to referring patients for urethroplasty; the most common barriers cited were long distance to urethroplasty surgeon (n = 13, 15%) and concern about complications (n = 8, 9%). Urethroplasty continues to be underutilized in men with anterior urethral strictures, potentially due to lack of knowledge dissemination and access to a urethroplasty surgeon. Appropriate urethroplasty utilization may increase with greater exposure to urethroplasty in training. [Rev Urol. 2016;18(4):188-193 doi: 10.3909/riu0731] © 2016 MedReviews®, LLC

UrethroplastyUrethral stricturesBarriersPhysician practice patterns

Kirsten L GreeneView Articles

Volume 8, Number 4Review Articles

Diagnostic Utility of the ImmunoCyt/uCyt+ Test in Bladder Cancer

Diagnostic Update

Badrinath R KonetyAnna BerryKirsten L Greene

Bladder cancer is a common malignancy in the United States. Although urine cytology is a useful adjunct in both diagnosis and follow-up and is highly sensitive for detecting high-grade tumors, it is limited by decreased sensitivity in detecting low-grade tumors, which constitute the majority of new diagnoses. Additional screening tests with high sensitivity and specificity for urothelial tumors of all grades are indicated to help improve the diagnostic ability of urine cytology as well as to reduce the need for frequent cystoscopies, especially in those with low-risk disease. Several assays have been developed, with the ImmunoCyt/uCyt test (DiagnoCure, Inc., Québec, Canada) being especially promising. Recent studies on the applicability and efficacy of ImmunoCyt/uCyt testing are reviewed, as are its sensitivity, specificity, and predictive value in the follow-up and screening of urothelial malignancies. [Rev Urol. 2006;8(4):190-197]

Bladder cancerCystoscopyImmunoCyt/uCyttestUrothelial malignancies

Krista WallaceView Articles

Volume 22, Number 2Review Articles

Implementation of a Centralized, Cost-effective Call Center in a Large Urology Community Practice

Original Research

Gary M KirshStephen F KappaChris McClainKrista WallacePaul CinquinaDon LawsonMary M SmithEarl WalzBrooke Edwards

Call centers provide front-line care and service to patients. This study compared call-answering efficiency and costs between the implementation of an internal, centralized call center (January to July 2019) and previously outsourced call-center services (January to July 2018) for a large urology community practice. Retrospective review of call metrics and cost data was performed. Internal call-center leadership, training, and culture was examined through survey of staff and management. A total of 299,028 calls with an average of 5751 calls per week were answered during the study periods. The Average Speed of Answer (ASA) was 1:42 (min:s) for the outsourced call center and 0:14 for the internal call center (P < 0.001), with 70% of outsourced calls answered under 2 minutes compared with 99% of calls for the internal call center (P < 0.001). The Average Handle Time (AHT) for each outsourced call was 5:32 versus 3:41 for the internal call center (P < 0.001). The total operating expenses were 7.7% lower for the internal call center. Surveys revealed the importance of engaged leadership and staff training with feedback, simplified work algorithms, and expanded clinical roles. We found that internal, centralized call centers may provide a call-answering solution with greater efficiency and lower total operating expense versus an outsourced call center for large surgical practices. A culture that emphasizes continuous improvement and empowers call-center staff with expanded clinical roles may ultimately enhance patient communication and service. [Rev Urol. 2020;22(2):67–74] © 2020 MedReviews®, LLC

Cost effectivenessCall centerTelehealthOrganizational efficiency

Kristene E WhitmoreView Articles