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Nephrocutaneous fistulaView Articles

Volume 12, Number 4Case Review

Chronic Spontaneous Nephrocutaneous Fistula Associated With Renal Replacement Lipomatosis

Abdelhak KhalloukMoulay Hassan FarihMohamed Fadl Tazi

Chronic spontaneous nephrocutaneous fistula is a rare renal disease. Renal replacement lipomatosis (RRL) is the result of the atrophy and destruction of renal parenchyma with massive increases in the amount of fat in the sinus and perirenal space. The 2 conditions can be associated because they may have the same etiology. Indeed, urolithiasis is the most common cause of these diseases. We report a case of chronic nephrocutaneous fistula associated with RRL due to both urolithiasis and renal tuberculosis.[Rev Urol. 2010;12(4):e190-e192 doi: 10.3909/riu0458]© 2010 MedReviews®, LLC

Nephrocutaneous fistulaRenal replacement lipomatosisRenal tuberculosis

NephrolithiasisView Articles
Nephron-sparing endoscopic treatmentView Articles

Volume 16, Number 1Review Articles

Nephron-sparing Management of Upper Tract Urothelial Carcinoma

Management Review

Tommaso BrancatoFrancesca Suriano

Upper tract urothelial carcinoma (UTUC) is a relatively rare tumor, but is characterized by high rates of recurrence, morbidity, and mortality. Choice of treatment modality is generally influenced by lesion size, grade, and focality. Radical nephroureterectomy with bladder cuff excision is the gold-standard management of UTUC, although an organ-sparing approach may be beneficial in selected patients. Conservative endoscopic management of UTUC in appropriate patients has a favorable impact on quality of life and health care costs when compared with patients who progress to dialysis-dependent renal failure. Careful ureteroscopic surveillance following endoscopic management of UTUC is essential. [Rev Urol. 2014;16(1):21-28 doi: 10.3909/riu0592] © 2014 MedReviews®, LLC

Upper tract urothelial carcinomaTumor gradeNephron-sparing endoscopic treatmentTopical adjuvant chemo-immunotherapyOncologic outcomes

Nephron-sparing procedureView Articles

Volume 22, Number 1Review Articles

Management of Low-grade Upper Tract Urothelial Carcinoma: An Unmet Need

Management Review

Neal D ShoreJay Raman

Upper tract urothelial cancers (UTUC) are frequently managed by radical nephroureterectomy (RNU), a major operative procedure that may entail short-term morbidity and long-term decline in renal function. Kidney-sparing procedures offer a less invasive alternative to RNU for low-risk, low-grade UTUC (LG-UTUC). They are associated with similar disease-specific survival rates and better long-term renal function, albeit with a potentially increased risk of recurrence. Strategies to decrease LG-UTUC recurrence include improved risk stratification and enhanced endoscopic instrumentation. Chemoablation may represent an alternative, innovative kidney-sparing approach for LG-UTUC. [Rev Urol. 2020;22(1):1–8] © 2020 MedReviews®, LLC

Risk stratificationUpper tract urothelial cancerRadical nephroureterectomyNephron-sparing procedureLow-grade tumors

Nephron-sparing surgeryView Articles

Volume 11, Number 2Meeting Reviews

Best of the 2009 AUA Annual Meeting

Highlights From the 2009 Annual Meeting of the American Urological Association, April 25-30, 2009, Chicago, IL

Dean G AssimosEllen ShapiroAlan W PartinMichael B ChancellorStacy LoebJ Curtis NickelClaus G RoehrbornMichael K BrawerNaoki YoshimuraArie S BelldegrunB ShuchF Pouliot

Prostate cancer screeningObesityBenign prostatic hyperplasiaLower urinary tract symptomsVesicoureteral refluxNephrolithiasisStress urinary incontinenceInflammationSilodosinHormonal therapyTumor markersTMPRSS2ERG4-Kallikrein panelBotulinum toxin type AMale voiding dysfunctionBenign prostatic specific antigenRoux-en-Y gastric bypass surgeryGenitourinary pain indexUPOINT clinical phenotype systemNephron-sparing surgeryWatchful waitingLaparoscopy for adrenal cortical carcinomaPartial adrenalectomyUrethral traumaPediatric urethral strictureEnteric urologic surgery

NephrostomyView Articles

Volume 15, Number 3Case Review

Obstructed Bifid Uretereric System Causing Unilateral Hydronephrosis

Amyn BhamaniManoj Srivastava

Bifid ureters are a common malformation of the urinary system. In clinical practice, hydronephrosis resulting from obstruction of such a system is rare. The authors present a case involving an 88-year-old man admitted to the hospital with symptoms of renal failure, where bifid ureters were found incidentally in a hydronephrotic kidney during an emergency nephrostomy. This had been missed on a previous CT scan, resulting in a unique therapeutic dilemma. [ Rev Urol. 2013;15(3):131-134 doi: 10.3909/riu0578] © 2013 MedReviews®, LLC

Bifid uretersHydronephrosisNephrostomy

NephroureterectomyView Articles
Nerve growth factorView Articles
Nerve injuryView Articles

Volume 12, Number 1Review Articles

Complications of Pelvic Lymphadenectomy: Do the Risks Outweigh the Benefits?

Treatment Review

Alan W PartinEdward M SchaefferStacy Loeb

The American Urological Association Best Practice Policy states that although pelvic lymph node dissection (PLND) is commonly done with radical prostatectomy, its morbidity must be considered, particularly in cases in which it offers little additional information. The benefits of PLND include more accurate staging and reassurance for the patient. In addition, PLND may be therapeutic for men with lymph node metastases and may result in long-term biochemical cure for selected node-positive patients. However, the incidence of node positivity is declining, and accordingly a greater number of lymphadenectomies must be performed to benefit 1 patient. In addition to the associated cost, PLND has the potential for morbidity, including lymphoceles, thromboembolic events, ureteral injury, and neurovascular injury. Patients and physicians should therefore assess the risk/benefit ratio associated with PLND on an individual basis to permit informed treatment decisions.[Rev Urol. 2010;12(1):20-24 doi:10.3909/riu0422]

Prostate cancerRadical prostatectomyPelvic lymph node dissectionUreteral injuryLymph node metastasesRisk to benefit ratioLymphoceleThromboembolic eventsVascular injuryNerve injury

Nerve stimulationView Articles
Nerve-sparing techniqueView Articles
NeurilemmomaView Articles

Volume 17, Number 3Case Review

Retroperitoneal Ancient Schwannoma: A Case Report

Selahattin ÇalIiskanGülistan GümrükçüCevdet Kaya

Schwannomas are extremely rare tumors that are composed of Schwann cells. Retroperitoneal localization comprises 0.7% to 2.6% of all schwannomas. Patients usually present with nonspecific symptoms. There are no pathognomonic features on radiologic evaluation. Preoperative biopsy is not recommended because of complication risks; however, surgery is necessary for diagnosis and treatment. Although most schwannomas are benign tumors, those that are associated with von Recklinghausen disease are malignant. Schwannomas exhibit regions of high and low cellularity, termed Antoni A and Antoni B areas, with a diffuse positivity of S100 protein on pathologic evaluation. If there are degenerative changes, such as cyst formation, hemorrhage, calcification, and hyalinization, these tumors are termed ancient schwannomas. We present a case of retroperitoneal ancient schwannoma. [Rev Urol. 2015;17(3):190-193 doi: 10.3909/riu0638] © 2015 MedReviews®, LLC

Retroperitoneal schwannomaNeurilemmomaSchwannomaRetroperitoneal tumor

Neuroendocrine cellsView Articles
Neuroendocrine tumorsView 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

Neurogenic bladderView Articles

Volume 23, Number 3Pediatric Urology

Recent Advances in Managing Pediatric Neurogenic Bladder due to Spina Bifida

Rachel VancavageAlexandra Rehfuss

Spina bifida is the most prevalent permanently disabling birth defect in the world. It results in damage to nerve endings that negatively affect bladder function and can potentially lead to kidney failure. Management of spina bifida continues to evolve, however, improving outcomes for patients with this condition.

Neurogenic bladderUrinary bladderSpinal dysraphismMyelomeningocele

Neurogenic detrusor overactivityView Articles

Volume 20, Number 2Review Articles

Botulinum Toxin Use in Neurourology

Systematic Review

Benjamin M BruckerGregory VurtureBenoit PeyronnetXavier GaméVictor W Nitti

The use of botulinum toxin A (BTX-A) has revolutionized the treatment of neurogenic lower urinary tract dysfunction (NLUTD) over the past three decades. Initially, it was used as a sphincteric injection for detrusor sphincter dyssynergia but now is used mostly as intradetrusor injection to treat neurogenic detrusor overactivity (NDO). Its use is supported by high-level-of-evidence studies and it has become the gold-standard treatment for patients with NDO refractory to anticholinergics. Several novelties have emerged in the use of BTX-A in neurourology over the past few years. Although onabotulinumtoxinA (BOTOX®, Allergan, Inc., Irvine, CA) remains the only BTX-A for which use is supported by large, multicenter, randomized, controlled trials (RCT), and is therefore the only one to be licensed in the United States and Europe, a second BTX-A, abobotulinumtoxinA (Dysport®, Ipsen Biopharmaceuticals, Basking Ridge, NJ), is also supported by high-level-of-evidence studies. Other innovations in the use of BTX-A in neurourology during the past few years include the BTX switch (from abobotulinumtoxinA to onabotulinumtoxinA or the opposite) as a rescue option for primary or secondary failures of intradetrusor BTX-A injection and refinements in intradetrusor injection techniques (number of injection sites, injection into the trigone). There is also a growing interest in long-term failure of BTX-A for NDO and their management, and a possible new indication for urethral sphincter injections. [Rev Urol. 2018;20(2):84–93 doi: 10.3909/riu0792] © 2018 MedReviews®, LLC

Botulinum toxinNeurogenic detrusor overactivitySphincterInjection

Neurogenic inflammationView Articles
Neurokinin · Overactive bladderView Articles
NeuromodulationView Articles
Neuropathic painView Articles

Volume 21, Number 1Case Review

Use of Spermatic Cord Block Systematically Identifies a Paraspinal Tumor as Source of Orchialgia

Mason HoltelRobert J Baranello JrAllyson HalePatrick Springhart

Orchialgia is a common urologic complaint with a myriad of etiologies. Workup for orchialgia requires a broad differential diagnosis and a thorough understanding of relevant anatomy. We report the case of a 43-year-old man who presented to a urologist with right testicular pain. Following a negative workup, the patient received a spermatic cord block for therapeutic and diagnostic purposes. Two months after the block, the patient returned with new complaints of ipsilateral inner thigh paresthesias, suggesting a pathologic process proximal to the genital branch of the genitofemoral nerve. A subsequent MRI of the lumbosacral spine revealed a paraspinal mass involving nerve roots at L1-2. We highlight the utility of the spermatic cord block and its role in the diagnosis of a paraspinal tumor as an uncommon cause of orchialgia. [Rev Urol. 2019;21(1):49–52] © 2019 MedReviews®, LLC

OrchialgiaNeuropathic painTesticular painSpermatic cord blockGenitofemoral nerveParaspinal tumor

NeuroplasticityView Articles
NeurotransmitterView Articles
NeurourologyView Articles
Neurovascular bundle resectionView Articles
NickelView Articles

Volume 19, Number 3Case Review

Surgical Solution to an Intracorporeal Nickel Allergy

Andrew StammPaul KozlowskiJared Brandenberger

A previously healthy 30-year-old man with a symptomatic varicocele underwent gonadal vein embolization using nickel vascular plugs. He developed a painful hypersensitivity to his nickel plugs and elected to pursue laparoscopic excision and proximal gonadal vein ligation. In the operating room, the gonadal vein was isolated from the ureter, and ligated proximal to the cephalad plug and distal to the caudal coil. His pain is completely resolved 5 months after surgery. Metal allergies are well documented in orthopedics and cardiology implants, but there are a limited number of case reports of metal allergies after varicocele embolization. Interestingly, nickel is the most common type of metal hypersensitivity. [Rev Urol. 2017;19(3):195–197 doi: 10.3909/riu0769] © 2017 MedReviews®, LLC

VaricoceleMetal allergyNickelCoil embolizationGonadal vein

Nighttime urine overproductionView Articles

Volume 14, Number 3Review Articles

Nocturia: Focus on Etiology and Consequences

Disease State Review

Jeffrey P Weiss

Nocturia is a condition characterized by the need to awaken ≥ 1 times per night to void. Although nocturia is a multifactorial condition that can coexist with other lower urinary tract symptoms, the most common causal factor is nighttime overproduction of urine. Many people with nocturia do not seek help, accepting it as a natural consequence of aging. However, nocturia is common in men and women of all ages and has a profound impact on quality of life, especially in the young, that may be associated with increased morbidity and mortality. Nocturia as a condition deserves public health attention. [Rev Urol. 2012;14(3/4):48-55 doi: 10.3909/riu0576] © 2013 MedReviews®, LLC

NocturiaQuality of lifeSleep disruptionNighttime urine overproduction

NIH-NIDDKView Articles
Nitric OxideView Articles
Nitric oxide synthaseView Articles
NitrofurantoinView Articles