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Detrusor instabilityView Articles
Detrusor overactivityView Articles

Volume 8, Number 4Review Articles

Botulinum Toxin for the Treatment of Idiopathic and Neurogenic Overactive Bladder: State of the Art

Treatment Update

Victor W Nitti

The pharmacologic treatment of overactive bladder and detrusor overactivity, whether idiopathic or neurogenic, has centered around blocking muscarinic receptors on the detrusor muscle. Although newer agents have been developed with better tolerability and safety, the basic mechanism by which the “irritable” detrusor is treated has not changed in decades. Although effective in many cases of idiopathic and neurogenic detrusor overactivity and overactive bladder, antimuscarinic agents fall short in many other cases because of lack of efficacy and/or tolerability. For the past several years, there has been increasing evidence to support the use of botulinum toxin for the treatment of detrusor overactivity and overactive bladder syndrome not effectively treated by anticholinergics. From early open-label studies to the more recent randomized, controlled trials, efficacy and tolerability data have been very encouraging. Botulinum toxin is not yet approved by the US Food and Drug Administration for the treatment of detrusor overactivity and overactive bladder, but the positive results seen thus far cannot be ignored. [Rev Urol. 2006;8(4):198-208]

Botulinum toxinDetrusor overactivityAntimuscarinic agents

Detrusor pressureView Articles
DetrusorrhaphyView Articles
Dextranomer/hyaluronic acidView Articles

Volume 18, Number 1Case Review

Management of Vesicoureteral Reflux by Endoscopic Injection of Dextranomer/Hyaluronic Acid in Adults

Timothy W StarkJohn M LacyDavid M Preston

A 74-year-old man presented for evaluation after discovery of a left bladder-wall tumor. He underwent transurethral resection of bladder tumor (TURBT) operation for treatment of low-grade, Ta urothelial cancer of the bladder. The patient developed recurrent disease and returned to the operating room for repeat TURBT, circumcision, and administration of intravesical mitomycin C. The patient developed balanitis xerotica obliterans 4 years post-circumcision, requiring self-dilation with a catheter. He subsequently developed 3 consecutive episodes of left-sided pyelonephritis. Further investigation with voiding cystourethrogram (VCUG) revealed Grade 3, left-sided vesicoureteral reflux (VUR). Due to existing comorbidities, the patient elected treatment with endoscopic dextranomer/hyaluronic acid injection. A post-operative VCUG demonstrated complete resolution of left-sided VUR. This patient has remained symptom free for 8 months post-injection, with no episodes of pyelonephritis. [Rev Urol. 2016;18(1):46-50 doi: 10.3909/riu0689] © 2016 MedReviews®, LLC

Vesicoureteral refluxPyelonephritisDextranomer/hyaluronic acid

DiabetesView Articles

Volume 17, Number 4Review Articles

Can Serum Testosterone Be Used as a Marker of Overall Health?

Health Screening Update

Michael A MederosAaron M BernieJason M ScovellRanjith Ramasamy

Low serum testosterone has been associated with obesity, type 2 diabetes, metabolic syndrome, and atherosclerosis. Individuals with these comorbidities are at increased risk of premature death and other adverse health effects. Clinical data portend low testosterone as a risk factor for developing these conditions which are supported by the hypogonadal-obesity-adipocytokine hypothesis. The authors support comprehensive evaluation for these comorbid conditions in men found to have low serum testosterone. [Rev Urol. 2015;17(4):226-230 doi: 10.3909/riu0674] © 2016 MedReviews®, LLC

DiabetesAndrogen deficiencyAging maleComorbiditiesCardiovascular disease

Diabetic cystopathyView Articles

Volume 15, Number 1Review Articles

The Other Bladder Syndrome: Underactive Bladder

Management Review

Michael B ChancellorMinoru MiyazatoNaoki Yoshimura

Detrusor underactivity, or underactive bladder (UAB), is defined as a contraction of reduced strength and/or duration resulting in prolonged bladder emptying and/or a failure to achieve complete bladder emptying within a normal time span. UAB can be observed in many neurologic conditions and myogenic failure. Diabetic cystopathy is the most important and inevitable disease developing from UAB, and can occur silently and early in the disease course. Careful neurologic and urodynamic examinations are necessary for the diagnosis of UAB. Proper management is focused on prevention of upper tract damage, avoidance of overdistension, and reduction of residual urine. Scheduled voiding, double voiding, al-blockers, and intermittent self-catheterization are the typical conservative treatment options. Sacral nerve stimulation may be an effective treatment option for UAB. New concepts such as stem cell therapy and neurotrophic gene therapy are being explored. Other new agents for UAB that act on prostaglandin E2 and EP2 receptors are currently under development. The pharmaceutical and biotechnology industries that have a pipeline in urology and women’s health may want to consider UAB as a potential target condition. Scientific counsel and review of the current pharmaceutical portfolio may uncover agents, including those in other therapeutic fields, that may benefit the management of UAB. [Rev Urol. 2013;15(1):11-22 doi: 10.3909/riu0558] © 2013 MedReviews®, LLC

Underactive bladderOveractive bladderDetrusor overactivityDiabetic cystopathy

DiagnosisView Articles
diagnostic imagingView Articles

Volume 23, Number 1Literature Reviews

Comparison of Methods for Ureteral Patency Visualization

Michelle BoytimMatthew J. JonesAlex S. BartPavel Svintozelskiy

The most common cause of ureteral trauma occurs during open, laparoscopic, or endoscopic procedures across multiple specialties. Ureteral injuries are often unrecognized or mismanaged. Early recognition of ureteral injuries by cystoscopy allows for prompt intervention. Visualization can be enhanced using agents that color or improve the contrast of ureteral flow.

Cystoscopydiagnostic imagingindigo carminemethylene bluefluorescein

DiathermyView Articles
DietView Articles
Dietary fatView Articles
Dietary modificationView Articles
Dietary supple-View Articles
DiethylstilbestrolView Articles

Volume 8, Supplement 2Review Articles

Hormonal Therapy for Prostate Cancer

16th International Prostate Cancer Update

Michael K Brawer

Updates on hormonal therapy in the treatment of prostate cancer are presented. The most common therapy is to reduce testosterone to castrate levels. A dosage of 1 mg diethylstilbestrol daily prolonged survival in patients with advanced prostate cancer. The leuteinizing hormone–releasing hormone agonists have essentially replaced surgical orchiectomy in the vast majority of clinical settings; however, a major problem with the leuteinizing hormone– releasing hormone agonists has been the surge and flare of testosterone levels. If hormonal therapy is initiated early, the risk of major complications is significantly decreased. Combined androgen blockade is better than monotherapy, although there is only a small clinical benefit. When androgen deprivation is used for a short time and the normal androgen milieu is re-established, the side effects and toxicity of androgen deprivation are decreased. The major complications of androgen deprivation include hot flushes, reduction of bone mineral density, osteoporosis, and anemia. Intermittent androgen blockade might have the same benefits of total androgen suppression with fewer side effects, increased duration of androgen dependence, and less cost. The 10 steps to take when advising patients about initiation of androgen deprivation therapy are reviewed. [Rev Urol. 2006;8(suppl 2):S35-S47]

Prostate cancerHormonal therapyAndrogen ablationDiethylstilbestrol

Digital rectal examinationView Articles
DihydrotestosteroneView Articles
Direct image-guided intervention (DIGI)View Articles

Volume 11, Number 1Review Articles

Robotic Image-Guided Needle Interventions of the Prostate

Technology Update

Alan W PartinPierre C MozerDan Stoianovici

Prostate biopsy and needle-directed prostate therapies are currently performed free-handed or with needle external templates under ultrasound guidance. Direct image-guided intervention robots are modern instruments that have the potential to substantially enhance these procedures. These may increase the accuracy and repeatability with which needles are placed in the gland. The authors’ group has developed a robot for precise prostate targeting that operates remotely alongside the patient in the magnetic resonance imaging scanner, as guided according to the image.[Rev Urol. 2009;11(1):7-15]

ProstateRobotDirect image-guided intervention (DIGI)MRI compatible

Disease progressionView Articles
Disorders of sexual developmentView Articles

Volume 18, Number 3Meeting Reviews

Highlights From the 2016 American Urological Association Annual Meeting

Benjamin M BruckerDean G AssimosEllen ShapiroAlan W PartinMichael B ChancellorStacy LoebJ Curtis NickelMichael A GorinMichael K Brawer

More than 2000 posters, abstracts, and videos were presented at the 2016 American Urological Association (AUA) Annual Meeting, held in San Diego, CA, from May 6 to 10, 2016. The editors of Reviews in Urology have culled an enormous volume of information from this premier source and present the findings that are most relevant to the practicing urologist. [Rev Urol. 2016;18(3):159-173 doi:10.3909/riu0717] © 2016 MedReviews®, LLC

Prostate cancerActive surveillanceDisorders of sexual developmentNephrolithiasisOveractive bladderMicrobiomeOnabotulinumtoxinAHemorrhagic cystitisInflammationFour kallikrein assayGenomic prostate score

DissectionView Articles

Volume 9, Number 3Case Review

Spontaneous Renal Artery Dissection

Case Review

Herbert LeporJamie A Kanofsky

Spontaneous renal artery dissection (SRAD) is a rare event, and thus may be a challenge for physicians to diagnose and treat. We report a case of SRAD in a healthy 56-year-old male who presented with flank pain, fever, and elevated white blood cell count. The patient was initially diagnosed with nephrolithiasis versus pyelonephritis and was admitted for observation. Multiple imaging modalities, including non-contrast computed tomography (CT), magnetic resonance imaging (MRI) with gadolinium, CT angiogram, and intraoperative angiogram, were used to make the final diagnosis of SRAD. The patient was treated with endovascular stent placement and is currently free of pain with normal laboratory values and blood pressure. [Rev Urol. 2007;9(3):156-160]

KidneyRenal arteryDissectionAngiogramEndovascular stenting

Distal shuntsView Articles

Volume 12, Number 1Case Review

Diagnostic and Therapeutic Options for the Management of Ischemic and Nonischemic Priapism

Case Review

Jacob RajferJeffrey Bassett

Priapism is defined as persistent penile erection continuing beyond, or unrelated to, sexual stimulation. Proper diagnosis encompasses at least 2 very different pathophysiologic processes. Ischemic priapism (“low flow”) is a disorder of venous outflow and/or stasis. Nonischemic priapism (“high flow”) is a disorder of arterial flow. We present 2 cases that review each condition. The first case highlights a 32-year-old man with a medical history of sickle cell disease who presented to the emergency department complaining of a persistent, painful erection that had continued for 18 hours. The second case describes a 24-year-old man with no significant medical history who sustained trauma to his pelvis while skateboarding. Although the initial evaluation of both types of priapism is similar, pathophysiology and resulting interventions differ for each, underscoring the importance of proper diagnosis.[Rev Urol. 2010;12(1):56-63 doi: 10.3909/riu0457]

Erectile dysfunctionIschemic priapismNonischemic priapismIntracorporeal pressureCavernosal hypoxiaPhosphodiesterase type 5Distal shunts

Distal ureteral calculiView Articles
Diuretic renogramView Articles
DN-101View Articles

Volume 9, Number 1Review Articles

Recent Progress in the Treatment of Advanced Prostate Cancer With Intermittent Dose-Intense Calcitriol (DN-101)

Treatment Update

Michael K Brawer

Docetaxel is becoming standard therapy for androgen-independent prostate cancer (AIPC), and investigational agents are being added to docetaxel to assess potential additive effects and synergy. Although one of these agents, calcitriol, has repeatedly demonstrated antiproliferative properties against cancer of the prostate, breast, colon, and lung, the antineoplastic activity of calcitriol requires superphysiologic levels. Unfortunately, chronic exposure to superphysiologic levels of calcitriol causes hypercalcemia and resulting toxicity. Therefore, a host of analogues of calcitriol have been investigated for antineoplastic function, including intermittent dose-intense calcitriol, or DN-101. Because of encouraging results from phase II studies of DN-101 combined with docetaxel, the ASCENT (AIPC Study of Calcitriol Enhancement of Taxotere) phase II trial investigated docetaxel plus DN-101 versus docetaxel plus placebo in 250 men with metastatic AIPC and an abnormal baseline prostate-specific antigen (PSA) level. Although the ASCENT trial did not achieve its primary endpoint for increased PSA response, there was a significant trend in PSA response rate in the DN-101 arm. DN-101 in combination with docetaxel seems to improve overall survival and, interestingly, has a favorable safety profile compared with docetaxel alone. The DN-101/docetaxel combination is currently being studied in a much larger international trial, ASCENT-2. [Rev Urol. 2007;9(1):1-8]

Prostate cancerVitamin DCalcitriolDN-101Docetaxel

DNAView Articles

Volume 10, Number 1Review Articles

Clinical Utility of Prostate Carcinoma Molecular Diagnostic Tests

Diagnostic Update

Scott B Shappell

Instead of relying on serum prostate-specific antigen (PSA) to identify patients for prostate biopsy, new laboratory tests are needed that have improved specificity for prostate carcinoma (CaP), allow accurate classification of clinically insignificant CaPs, allow for detection of clinically significant CaP in patients without elevated serum PSA, and allow for identification of aggressive forms of CaP, which may warrant adjunctive or even molecularly targeted therapy in the future. Over the last several years, highthroughput gene expression profiling and proteinomics have led to the identification of genes and proteins that are specifically overexpressed in CaP. Molecular diagnostic techniques readily translated to the clinical laboratory have been incorporated into the development of new tests based on these novel molecular alterations in CaP. Some of these tests already have well-documented clinical utility, such as in facilitating prostate biopsy decisions, and are routinely available. The current review focuses on the biological, clinical, and laboratory aspects of the most promising of these current and nearfuture molecular CaP tests. [Rev Urol. 2008;10(1):44-69]

Molecular diagnosticsProstate carcinomaProstate cancer antigen 3Alpha-methylacyl-CoA racemaseEarly prostate cancer antigenTransmembrane protease,serine 2ERGDNARNA

DNA next-generation sequencingView Articles

Volume 19, Number 4Review Articles

A Head-to-Head Comparative Phase II Study of Standard Urine Culture and Sensitivity Versus DNA Next-generation Sequencing Testing for Urinary Tract Infections

Original Research

Vladimir MouravievDavid AlbalaMichael McDonaldDarian KamehMark E JohnsonTruls E Bjerklund Johansen

Many studies have discussed clinical practice guidelines for the treatment of cystitis and pyelonephritis. Treatment of uncomplicated urinary tract infections (UTIs) can be based on empiric antibiotic therapy. For complicated or recurrent UTIs, therapy can be based on laboratory-controlled culture and sensitivity (C&S) reports. The diagnosis of UTI by clinical criteria alone has an error rate of up to 33%. In addition, positive laboratory culture results do not always indicate a diagnosis of UTI. Comparison of urine in a conventional culture model versus DNA next-generation sequencing (NGS) to accurately identify and provide information on resistance factors (mobile genetic elements) is warranted. Our study was a head-to-head comparative phase II study of standard urine C&S versus DNA NGS testing for the diagnosis and treatment efficacy in patients with symptoms of acute cystitis based on short-term outcomes. [Rev Urol. 2017;19(4):213–220 doi: 10.3909/riu0780] © 2018 MedReviews®, LLC

Urinary tract infectionPyelonephritisCystitisDNA next-generation sequencing

DNA ploidyView Articles
DocetaxelView Articles
DopplerView Articles

Volume 8, Supplement 1Review Articles

Contrast-Enhanced Ultrasound Imaging of Prostate Cancer

Prostate Cancer Imaging

Ethan J Halpern

Ultrasound imaging of the prostate is commonly used to assess the size of the gland and for needle placement during systematic biopsy. Ultrasound evaluation of prostate cancer is limited by difficulty in distinguishing benign from malignant tissue. Although Doppler techniques may provide some improvement in the detection of prostate cancer, targeted biopsy based on conventional ultrasound with Doppler is not sufficient to replace systematic biopsy. Contrast-enhanced ultrasound imaging techniques that employ microbubble contrast agents represent an innovative approach to imaging of the neovascularity associated with prostate cancer. This review describes the application of contrast-enhanced ultrasound to improve detection and assessment of prostate cancer. [Rev Urol. 2006;8(suppl 1):S29-S37]

Prostate cancerDopplerUltrasoundMicrobubble contrast agents