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Directory of Authors from the Journal and their last article.

Yan DongView Articles

Volume 19, Number 1Review Articles

Use of the 4Kscore Test to Predict the Risk of Aggressive Prostate Cancer Prior to Prostate Biopsy: Overall Cost Savings and Improved Quality of Care to the US Healthcare System

Health Economics

Yan DongVincent LinderJeffrey D VoigtStephen Zappala

The 4Kscore® Test (BioReference Laboratories, Elmwood Park, NJ) is a blood test that accurately determines the risk of aggressive prostate cancer and significantly reduces prostate biopsies and associated overdiagnosis and overtreatment of indolent cancer. A budget impact model was developed to test the hypothesis that the 4Kscore Test can improve quality of care and deliver cost savings for patients who are suspected of having prostate cancer and would otherwise undergo prostate biopsy under the current standard of care (SOC) in the United States. The direct costs (diagnosis plus treatment) utilized in the model are based on Medicare payment data and were calculated over a 1-year time horizon. The model compares SOC, in which all patients have prostate biopsy, to a “4Kscore strategy,” in which the 4Kscore Test is used to guide the decision to biopsy the prostate. A set of one-way sensitivity analyses was conducted to examine the robustness of the findings. Savings of more than $169 million (15.6% of total SOC costs) were realized in the 4Kscore strategy versus SOC ($917 M versus $1,086 M, respectively) in a cohort of 100,000 patients. Sensitivity analyses demonstrated that the findings are robust. Most cost savings for the 4Kscore strategy were realized in patients who, when managed by SOC, are found to have no prostate cancer or Gleason score 6 pathology. The patients with Gleason score 6 exhibited the greatest benefits from the 4Kscore strategy, avoiding both an unnecessary prostate biopsy and subsequent overtreatment. The 4Kscore Test was shown to significantly reduce costs to the healthcare system while improving patients’ quality of care. Providers and their patients suspected of having prostate cancer should consider using the 4Kscore Test prior to proceeding with prostate biopsy. [Rev Urol. 2017;19(1):1-10 doi: 10.3909/riu0753] © 2017 MedReviews®, LLC

Prostate cancerPSA screening4KscoreProstate biopsyCost savings

Yan Kit FongView Articles
Yao-Chi ChuangView Articles
Yaseen RajjoubView Articles

Volume 17, Number 2Book Reviews

A Review of Transplantation Practice of the Urologic Organs: Is It Only Achievable for the Kidney?

Treatment Update

Jack Donati-BourneHarry W RobertsYaseen RajjoubRobert A Coleman

Transplantation is a viable treatment option for failure of most major organs. Within urology, transplantation of the kidney and ureter are well documented; however, evidence supporting transplantation of other urologic organs is limited. Failure of these organs carries significant morbidity, and transplantation may have a role in management. This article reviews the knowledge, research, and literature surrounding transplantation of each of the urologic organs. Transplantation of the penis, testicle, urethra, vas deferens, and bladder is discussed. Transplantation attempts have been made individually with each of these organs. Penile transplantation has only been performed once in a human. Testicular transplantation research was intertwined with unethical lucrative pursuits. Interest in urethra, bladder, and vas deferens transplantation has decreased as a result of successful surgical reconstructive techniques. Despite years of effort, transplantations of the penis, testicle, urethra, vas deferens, and bladder are not established in current practice. Recent research has shifted toward techniques of reconstruction, tissue engineering, and regenerative medicine. [Rev Urol. 2015;17(2):69–77 doi: 10.3909/riu0659] © 2015 MedReviews®, LLC

UrologyTransplantationReconstructionTissue engineering

Yasutomo NasuView Articles
Yongtae KimView Articles
Younes AhallalView Articles

Volume 11, Number 4Case Review

Concurrent Bilateral Renal Angiomyolipoma and Renal Cell Carcinoma in a Patient With Tuberous Sclerosis Complex

Abdelhak KhalloukYounes AhallalMohamed Jamal El FassiMohamed Fadl TaziSoufiane MellasMbarek Doublali

Renal angiomyolipomas (AMLs) are often associated with tuberous sclerosis. These tumors are predominantly benign, although malignant forms do exist and are known to be associated with renal cell carcinoma. This case report describes a patient with tuberous sclerosis and massive bilateral AML. Total right nephrectomy was performed; histopathologic examination revealed the coexistence of AML and clear cell renal carcinoma in the same kidney. Because differentiation between renal cell carcinoma and AML with minimal or no fat component can be difficult, an accurate diagnosis is critical in the management of renal AML.[Rev Urol. 2009;11(4):216-218 doi: 10.3909/riu0436]© 2009 MedReviews®, LLC

Renal cell carcinomaAngiomyolipomaTuberous sclerosis

Yousef SolimanView Articles

Volume 18, Number 1Review Articles

Falls in the Elderly Secondary to Urinary Symptoms

Prevention and Management Update

Yousef SolimanRichard MeyerNeil Baum

Falls and fractures have a significant impact on our patients, their families, and caregivers, and cost the health care system billions of dollars. Each year, millions of adults aged 65 and older fall. Falls can cause moderate to severe injuries, such as hip fractures and head traumas, and can increase the risk of early death. Fortunately, falls are a public health problem that is largely preventable. Because many patients with falls and subsequent fractures have urologic conditions, urologists are positioned to help with the prevention of these significant and costly injuries. This article discusses the epidemiology of falls and fractures, and the urologic comorbidities that increase their risk. [Rev Urol. 2016;18(1):28-32 doi: 10.3909/riu0686] © 2016 MedReviews®, LLC

NocturiaOveractive bladderFallsFracturesUrinary tract infectionsPrevention

Youssef S TanaghoView Articles

Volume 15, Number 2Case Review

Endoscopic Management of Genitourinary Foreign Bodies

Joseph B SongYoussef S TanaghoMohammed HaseebuddinBrian M BenwayAlana C DesaiSam B BhayaniRobert S Figenshau

Retrieval of foreign bodies from the genitourinary system, most commonly inserted for sexual satisfaction or as a result of a psychiatric illness, can pose a significant surgical challenge. Due to their breadth of size, shape, and location within the genitourinary system, endoscopic management can be difficult. Here, we review the management of four cases of foreign object insertion into the genitourinary system and their outcomes and management. [Rev Urol. 2013;15(2):84-91 doi: 10.3909/riu0571] © 2013 MedReviews®, LLC

Foreign body insertionSoundingGenitourinary foreign objectEndoscopic extraction

Yu-Hsiang LinView Articles

Volume 13, Number 2Case Review

Malignant Priapism Secondary to Metastatic Prostate Cancer: A Case Report and Review of Literature

Yu-Hsiang LinJerry J KimNed B SteinMohit Khera

Penile metastasis of cancers from other primary sites is a rare phenomenon that infrequently manifests as malignant priapism. We outline a case of an 84-year-old patient who presented with a 3-month history of painful priapism after radiation therapy for prostate adenocarcinoma. The patient underwent surgical penile exploration and cavernosal biopsy that revealed poorly differentiated cells suggestive of prostate cancer. Postoperative imaging demonstrated extensive regional and distal metastases. A review of the literature on penile metastases returned approximately 400 published cases, with priapism being the initial presentation in 20% to 50% of cases. Regardless of site of origin or subsequent management, most cases have shown very poor prognosis. [Rev Urol. 2011;13(2):90-94 doi: 10.3909/riu0508] © 2011 MedReviews®, LLC

Prostate cancerMalignant priapismPenile metastasis

Zahoor FaziliView Articles

Volume 16, Number 2Review Articles

Solitary Renal Fossa Recurrence of Renal Cell Carcinoma After Nephrectomy

Treatment Review

Kamran AhmedJi-Jian ChowZahoor FaziliMohammed SheikhMartin Sheriff

Renal cell carcinoma without metastasis responds well to surgical excision but is known to recur postnephrectomy. In a small but significant number of patients this recurrence is not accompanied by metastasis, which is important as these people benefit from further surgery. We examined 20 articles from the current literature to ascertain how best to treat this condition. Surgical management renders better results than conservative or medical therapies. Readily available investigations such as blood tests and computed tomography can help determine the right patients for surgery in an evidence-based fashion. Current findings have allowed us to suggest a protocol for the treatment of solitary renal fossa recurrence of postnephrectomy renal cell carcinoma. There are further opportunities for study in validating our protocol, and in novel renal cell carcinoma treatment strategies that have not been tested on solitary renal fossa recurrences. [Rev Urol. 2014;16(2):76-82 doi: 10.3909/riu0598] © 2014 MedReviews®, LLC

ComplicationsManagementRenal cancerRecurrenceNephrectomy

Zakaria DahamiView Articles

Volume 13, Number 3Case Review

An Unusual Presentation of Primary Male Genital Tuberculosis

Imane KamaouiMohamed AmineBrahim EddafaliA Ibn SellamZakaria DahamiSaid Mohamed MoudouniIsmail Sarf

Urogenital tuberculosis is a rare disease; however, it is the second most common location for tuberculosis after the lung. Currently, incidence of urogenital tuberculosis is increasing due to factors such as a higher prevalence of immunosuppression (especially that caused by human immunodeficiency virus infection) and drug abuse. Herein a new case of male genital primary tuberculosis is reported presenting as a scrotal tumor; the originality of this observation lies in its unusual pseudotumor form. [Rev Urol. 2011;13(3):176-178 doi: 10.3909/riu0525] © 2011 MedReviews®, LLC

Urogenital tuberculosisEpididymal tuberculosisMale genital tuberculosis

Zeph OkekeView Articles

Volume 16, Number 1Review Articles

Calyceal Diverticula: A Comprehensive Review

Disease State Review

Zeph OkekeNikhil WaingankarSamih HayekArthur D Smith

Calyceal diverticula are rare outpouchings of the upper collecting system that likely have a congenital origin. Stones can be found in up to 50% of calyceal diverticula, although, over the combined reported series, 96% of patients presented with stones. Diagnosis is best made by intravenous urography or computed tomography urogram. Shock wave lithotripsy (SWL) is an option for first-line therapy in patients with stone-bearing diverticula that have radiologically patent necks in mid- to upper-pole diverticula and small stone burdens. Stone-free rates are the lowest with SWL, although patients report being asymptomatic following therapy in up to 75% of cases with extended follow-up. Ureteroscopy (URS) is best suited for management of anteriorly located mid- to upper-pole diverticular stones. Drawbacks to URS include difficulty in identifying the ostium and low rate of obliteration. Percutaneous management is best used in posteriorly located mid- to lower-pole stones, and offers the ability to directly ablate the diverticulum. Percutaneous nephrolithotomy remains effective in the management of upper-pole diverticula, but carries the risk of pulmonary complications unless subcostal access strategies such as triangulation or renal displacement are used. Laparoscopic surgery provides definitive management, but should be reserved for cases with large stones in anteriorly located diverticula with thin overlying parenchyma, and cases that are refractory to other treatment. This article reviews the current theories on the pathogenesis of calyceal diverticula. The current classification is examined in addition to the current diagnostic methods. Here we summarize an extensive review of the literature on the outcomes of the different treatment approaches. [ Rev Urol. 2014;16(1):29-43 doi: 10.3909/riu0581] © 2014 MedReviews®, LLC

UreterorenoscopyCalyceal diverticulaPercutaneous nephrostolithotomyLaparoscopic surgeryShock wave lithotripsy

Zeyad R SchwenView Articles
Zhamshid OkhunovView Articles

Volume 18, Number 1Review Articles

Nephrolithometric Scoring Systems to Predict Outcomes of Percutaneous Nephrolithotomy

Management Update

Simone L VernezZhamshid OkhunovPiruz MotamediniaVincent BirdZeph OkekeArthur Smith

Currently, there is no single agreement upon an ideal predictive model that characterizes the complexity of renal stones and predicts surgical outcomes following percutaneous nephrolithotomy (PCNL). New predictive tools have recently emerged to systematically and quantitatively assess kidney stone complexity to predict outcomes following PCNL: the Guy’s Stone Score, the CROES nomogram, S.T.O.N.E. nephrolithometry, and S-ReSC score. An ideal scoring system should include variables that both influence surgical planning and are predictive of postoperative outcomes. This review discusses the strengths, weaknesses, and commonalities of each of the above scoring systems. Additionally, we propose future directions for the development and analysis of surgical treatment for stone disease, namely, the importance of assessing radiation exposure and patient quality of life when counseling patients on treatment options. [Rev Urol. 2016;18(1):15-27 doi: 10.3909/riu0693] © 2016 MedReviews®, LLC

Percutaneous nephrolithotomyUrolithiasisScoring systemNomograms

Zhanyong BingView Articles

Volume 12, Number 4Case Review

Neuroendocrine Tumor of the Bladder

Alan J WeinShailen S SehgalZhanyong BingThomas J Guzzo

Small cell carcinoma (SCC) of the bladder is a rare and aggressive tumor associated with a poor prognosis. It often presents at a later stage than urothelial carcinoma of the bladder, and comprises less than 1% of bladder malignancies. A number of treatment algorithms have been used to treat bladder SCC, including cystectomy, partial cystectomy, radiotherapy, chemoradiotherapy, chemotherapy alone, and neoadjuvant/adjuvant chemotherapy. Presented is a case of SCC of the bladder, and the epidemiology, prognosis, and current treatment algorithms for patients with bladder SCC are reviewed.[Rev Urol. 2010;12(4):e197-e201 doi: 10.3909/riu0492]©2010 MedReviews®, LLC

Bladder cancerNeuroendocrine tumorsSmall cell carcinoma