30,616 results match your criteria Urinary Obstruction


How I Handle Retreatment of LUTS Following a Failed MIST.

Curr Urol Rep 2021 Jun 11;22(8):40. Epub 2021 Jun 11.

Department of Urology, Weill Cornell Medical College of Cornell University, 425 East 61st street, 12th floor, New York, NY, 10065, USA.

Purpose Of Review: The goal of this paper is to review retreatment management after failed minimally invasive treatment (MIST) of various technologies.

Recent Findings: A failed MIST can be defined by the return, persistence, or worsening of LUTS, as documented by symptom scores. Persistence, development, or recurrence of comorbidities such as recurrent urinary tract infection (UTI), retention, stones, hematuria, and incontinence can also signal a failed MIST. Read More

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Cystic Prostatic Carcinoma - A Clinical Case and Literature Review.

Res Rep Urol 2021 3;13:335-340. Epub 2021 Jun 3.

Urology Department, St. Luke's Clinical Hospital, Saint-Petersburg, Russia.

Cystic formations in the prostate are quite common, but the vast majority are benign. The cystic form of prostate adenocarcinoma can present unexpected symptoms, and management can be difficult because of the local advanced stage of the disease. A unique feature of this case is the surgical local cancer treatment. Read More

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[A Case of Robot-Assisted Radical Cystoprostatectomy for Locally Advanced Prostate Cancer with Bladder Infiltration].

Hinyokika Kiyo 2021 Apr;67(4):163-166

The Department of Urology, Tokushima University Graduate School of Biomedical Sciences.

While robot-assisted radical cystoprostatectomy (RARC) for locally advanced prostate cancer (LAPC) may sometimes prove to be excessive treatment, it can significantly reduce the risk of positive surgical margins and lower urinary tract obstruction in some cases. Here, we report a case of LAPC treated with RARC in a patient with right hydronephrosis due to bladder infiltration and left hypoplastic kidney. A 71-year-old man presented with frequent urination in August 2019. Read More

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[Two Cases of Renal Pelvic Rupture Due to Trauma in a Patient with Ureteropelvic Junction Stenosis].

Hinyokika Kiyo 2021 Apr;67(4):141-145

The Department of Urology, Ijinkai Takeda General Hospital.

A pathologic kidney with hydronephrosis is prone to rupture after minor trauma to the renal pelvis ; however, it is controversial whether drainage, such as nephrostomy and ureteral stenting, should be performed in this setting. Herein we report traumatic rupture of the renal pelvis in 2 patients with ureteropelvic junction stenosis at two centers. Case 1 : A 15-year-old boy sustained a blunt injury on his left back while playing football. Read More

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Bipolar Transurethral Enucleation of the Prostate: Is it a size-independent endoscopic treatment option for symptomatic benign prostatic hyperplasia?

PLoS One 2021 9;16(6):e0253083. Epub 2021 Jun 9.

Department of Urology, Foundation IRCCS Ca' Granda-Ospedale Maggiore Policlinico, University of Milan, Milan, Italy.

Background: Bipolar Transurethral Enucleation of the Prostate (B-TUEP) is recommended as a first-choice treatment for benign prostatic obstruction in prostates >80 ml. Differently, B-TUEP is only considered as an alternative option after TURP for smaller prostates (30-80 ml). The aim of our study is to assess the relation between prostate size and surgical outcomes after B-TUEP. Read More

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Current Perspectives on the Diagnosis and Management of Primary Urethral Cancer: A Systematic Review.

Res Rep Urol 2021 1;13:325-334. Epub 2021 Jun 1.

Center for Reconstructive Urologic Surgery, Lahey Hospital and Medical Center, Burlington, MA, USA.

Primary urethral cancer (PUC) is a rare but highly aggressive malignancy that causes malignant urethral obstruction. We conducted a literature review using PubMed to identify original research studies that assessed the diagnosis and management of primary urethral cancer. PUC affects men more than women, is more common in African Americans than Caucasians, and is associated with history of chronic inflammation and irritation of the urinary tract. Read More

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Zinner Syndrome with Ectopic Ureter Remnant.

Curr Med Imaging 2021 Jun 8. Epub 2021 Jun 8.

Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea.

Zinner syndrome is a rare congenital abnormality defined by a clinical triad of unilateral renal agenesis, ipsilateral seminal vesicle cyst, and ipsilateral ejaculatory duct obstruction. Most patients are asymptomatic, but if the cystic dilatation of the seminal vesicle becomes significant, it can result in urinary symptoms such as dysuria and urinary retention. This rare developmental anomaly related to the mesonephric duct can also present with other abnormalities. Read More

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Common iliac artery aneurysm urological manifestations.

Rev Med Inst Mex Seguro Soc 2020 ;58(2):216-220

Centro Médico Dalinde, Torre Médica Gineco-Pediátrica, Área de Cirugía Cardiovascular, Ciudad de México, México.

Background: An iliac artery aneurysm is a permanent and focal dilation of the artery that measures more than 50% of the normal diameter of the vessel. Isolated iliac artery aneurysms are infrequent, mostly as an association with an abdominal aortic aneurysm. The objective of this article is mainly to focus on urological symptoms as the manifestations of iliac artery aneurysm, to propitiate an early diagnosis. Read More

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January 2020

Evaluation of Urinary Tract Dilation Classification System for Prediction of Long-Term Outcomes in Isolated Antenatal Hydronephrosis: A Cohort Study.

J Urol 2021 Jun 8:101097JU0000000000001899. Epub 2021 Jun 8.

Pediatric Nephrourology Division, Department of Pediatrics, National Institute of Science and Technology of Molecular Medicine, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil.

Purpose: The aim of this study was to evaluate the performance of the new classification of urinary tract dilatation (UTD) to predict long-term clinical outcomes in infants with isolated antenatal hydronephrosis (AHN).

Patients And Methods: Between 1989 and 2019, 447 infants diagnosed with isolated severe AHN and were prospectively followed. The main predictive variable for the analysis was the new UTD classification system. Read More

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Spontaneous intraperitoneal renal rupture with urinoma formation in the fetus.

Urol Case Rep 2021 Jul 5;37:101697. Epub 2021 May 5.

Department of Urology and Renal Transplantation, Nagasaki University Hospital, Nagasaki, Japan.

Spontaneous intraperitoneal renal rupture with urinoma formation in fetuses is an unusual condition that is caused by upper or lower urinary tract obstruction. We report the case of a neonatal male infant who presented with a spontaneous intraperitoneal right renal rupture accompanying ipsilateral ureterovesical junction obstruction (UVJO). Fetuses with UVJO accompanying contralateral multicystic dysplastic kidney should be observed carefully because of the risk of spontaneous renal rupture. Read More

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A Fetus with Imperforate Anus Developing Pulmonary Hypoplasia Triggered by Transient Urethral Obstruction.

Case Rep Obstet Gynecol 2021 13;2021:9950578. Epub 2021 May 13.

Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.

Pulmonary hypoplasia is a rare entity in a fetus with imperforate anus. The fetus was diagnosed with high-type imperforate anus with rectourethral fistula based on the dilated fetal bowel and the presence of bowel calcification at 19 weeks of gestation. As gestation advanced, fetal ultrasonography demonstrated development of pulmonary hypoplasia, progressive bowel dilation, and persistent oligohydramnios from 28 weeks of gestation despite a fluid-filled bladder without hydroureter or hydronephrosis. Read More

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Post-void residual urine ratio: A novel clinical approach to the post-void residual urine in the assessment of males with lower urinary tract symptoms.

Investig Clin Urol 2021 May 24. Epub 2021 May 24.

Department of Urology, AOUI Verona, Verona, Italy.

Purpose: To assess the correlation between post-void residual urine ratio (PVR-R) and pathological bladder emptying diagnosed by pressure-flow studies (PFS) in males with lower urinary tract symptoms (LUTS).

Materials And Methods: PVR-R and PVR urine were evaluated in 410 males underwent PFS for LUTS. PVR-R was the percentage of PVR to bladder volume (voided volume+PVR). Read More

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Urosepsis and the urologist!

Curr Urol 2021 Mar 29;15(1):39-44. Epub 2021 Mar 29.

Department of Urology, Connolly Hospital, Blanchardstown, Dublin, Ireland.

Introduction: Sepsis is a life-threatening organ dysfunction that is caused by a dysregulated host response to the infection. Urosepsis contributes up to 25% of all sepsis cases. An important part of the management of urosepsis is to rule out possible surgical causes such as urolithiasis, obstructive uropathy, or abscess formation along the urogenital tract. Read More

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An elderly male with lower urinary tract symptoms during COVID-19 pandemic: Extraperitoneal perforation of bladder diverticulum.

Urologia 2021 Jun 4:3915603211022945. Epub 2021 Jun 4.

Department of Urology, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India.

Case: We present a case of spontaneous extra-peritoneal rupture of an acquired diverticulum an elderly male with symptoms of bladder outlet obstruction who presented in emergency with acute abdomen.

Outcome: The acute phase was managed conservatively with bladder drainage and intravenous antibiotics. He recently underwent Transurethral Resection of Prostate. Read More

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Safety and efficacy of holmium laser enucleation of prostate as salvage procedure for persistent or recurrent lower urinary tract symptoms secondary to bladder outlet obstruction after prior prostate artery embolization: a match analysis.

World J Urol 2021 Jun 3. Epub 2021 Jun 3.

Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA.

Purpose: To evaluate safety and efficacy of Holmium laser enucleation of Prostate (HoLEP) for management of persistent or recurrent lower urinary tract symptoms after prior prostate artery embolization (PAE). We also evaluated histopathological changes in prostate after PAE.

Methods: Ten patients who underwent HoLEP after prior PAE were matched according to age, weight of resected prostate tissue, and anticoagulation status in 1:2 ratio with patients who underwent HoLEP without prior PAE by a researcher who was blinded to patient's outcome at the time of matching. Read More

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Transureteroureterostomy in children: a retrospective study.

Am J Clin Exp Urol 2021 15;9(2):163-169. Epub 2021 Apr 15.

Department of Pediatric Surgery, Bangalore Medical College and Research Institute Bengaluru, India.

Transureteroureterostomy (TUU) is a urinary reconstructive procedure seldom used but has a role when conventional reconstructive techniques are not possible. However, the concern is whether it places the opposite, non-diseased ureter and kidney at risk. Hence a retrospective study was conducted to evaluate indications, methods, and outcomes of transureteroureterostomy in children. Read More

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Mesenchymal Stem Cells Attenuate Renal Fibrosis via Exosomes-Mediated Delivery of microRNA Let-7i-5p Antagomir.

Int J Nanomedicine 2021 25;16:3565-3578. Epub 2021 May 25.

Department of Nephrology, Zhejiang Provincial People's Hospital and Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, People's Republic of China.

Background: Renal fibrosis is a chronic and progressive process affecting kidneys in chronic kidney disease (CKD). Mesenchymal stem cells-derived exosomes (MSCs-Exo) have been shown to alleviate renal fibrosis and injury, but the mechanism of MSCs-Exo-induced renal protection remains unknown.

Methods: In this study, MSCs were transfected with let-7i-5p antagomir (anti-let-7i-5p), and then exosomes were isolated from the transfected MSCs to deliver anti-let-7i-5p oligonucleotides to inhibit the level of let-7i-5p in kidney tubular epithelial cells (NRK-52E). Read More

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Salvage high dose rate brachytherapy for recurrent prostate cancer after definitive radiation.

Pract Radiat Oncol 2021 May 30. Epub 2021 May 30.

Department of Radiation Oncology, University of California, San Francisco; San Francisco, CA. Electronic address:

Purpose: Salvage high-dose-rate brachytherapy (sHDRBT) for locally recurrent prostate cancer after definitive radiation is associated with biochemical control in approximately half of patients at 3-5 years. Given potential toxicity, patient selection is critical. We present our institutional experience with sHDRBT and validate a recursive partitioning machines model for biochemical control. Read More

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Biodegradable Stent with mTOR Inhibitor-Eluting Reduces Progression of Ureteral Stricture.

Int J Mol Sci 2021 May 26;22(11). Epub 2021 May 26.

Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Chiayi 613016, Taiwan.

In this study, we investigated the effect of mTOR inhibitor (mTORi) drug-eluting biodegradable stent (DE stent), a putative restenosis-inhibiting device for coronary artery, on thermal-injury-related ureteral stricture in rabbits. In vitro evaluation confirmed the dose-dependent effect of mTORi, i.e. Read More

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Dual Actions of A and A Adenosine Receptor Ligand Prevents Obstruction-Induced Kidney Fibrosis in Mice.

Int J Mol Sci 2021 May 26;22(11). Epub 2021 May 26.

Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea.

Kidney fibrosis is the final outcome of chronic kidney disease (CKD). Adenosine plays a significant role in protection against cellular damage by activating four subtypes of adenosine receptors (ARs), AAR, AAR, AAR, and AAR. AAR agonists protect against inflammation, and AAR antagonists effectively inhibit the formation of fibrosis. Read More

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Outcomes Related to Percutaneous Nephrostomies (PCN) in Malignancy-Associated Ureteric Obstruction: A Systematic Review of the Literature.

J Clin Med 2021 May 27;10(11). Epub 2021 May 27.

Department of Urology, University Hospital Southampton, Southampton SO16 6YD, UK.

Background: Malignant ureteric obstruction occurs in a variety of cancers and has been typically associated with a poor prognosis. Percutaneous nephrostomy (PCN) can potentially help increase patient longevity by establishing urinary drainage and treating renal failure. Our aim was to look at the outcomes of PCN in patients with advanced cancer and the impact on the patients' lifespan and quality of life. Read More

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Prolonged Indwelling Urethral Catheterization as Minimally Invasive Approach for Definitive Treatment of Posterior Urethral Valves in Unstable Premature Babies.

Children (Basel) 2021 May 18;8(5). Epub 2021 May 18.

Pediatric Surgery Unit, Sapienza University of Rome, AOU Policlinico Umberto I, 00161 Rome, Italy.

Premature newborns with posterior urethral valves (PUV) may present with medical conditions taking priority over definitive surgical care. We encountered three of such cases who underwent initial bladder decompression via transurethral catheterization and waited 2-3 weeks until they were fit enough for voiding cysto-urethrography to confirm PUV. An unexpected good urinary flow and negligible residual urine volume were documented during micturition, suggestive of valve disruption induced by insertion and prolonged duration of indwelling urethral catheter drainage. Read More

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A Double Metachronous Ureter Metastasis following Curative Resection of Rectal Cancer.

Case Rep Gastroenterol 2021 Jan-Apr;15(1):450-455. Epub 2021 Apr 29.

Department of General and Visceral Surgery, St. Josef-Hospital Bochum, Ruhr University Bochum, Bochum, Germany.

A malignant ureteral obstruction is most often due to primary tumors of the ureter. However, it can occur secondary due to external tumor compression or metastatic infiltration. Distant metastases to the ureter are extremely rare. Read More

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Case report of ureter obturator hernia and literature review analysis.

BMC Urol 2021 May 29;21(1):86. Epub 2021 May 29.

Department of Clinical Medicine, Fujian Medical University, Fuzhou, 350000, China.

Background: Ureteral obturator hernia is a rare condition, usually found accidentally during imaging examinations, or found during surgery. Ureteral hernia can easily lead to ureteral obstruction and hydronephrosis. Long-term hydronephrosis may lead to kidney damage and infection, and eventually cause kidney failure. Read More

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Simple Prostatectomy for Giant Benign Prostatic Hyperplasia in Sub-Saharan Africa: Case Series and Literature Review.

West Afr J Med 2021 May;38(5):498-501

Urology Unit, Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria.

Introduction: Benign prostatic hyperplasia (BPH) is a common cause of bladder outlet obstruction in men worldwide. African men are known to have larger mean prostate volumes than other races. Giant benign prostatic hyperplasia (GBPH) is defined as prostate size greater than 200 grams. Read More

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Renal expression and urinary excretion of aquaporin-2 in postobstructive uropathy in rats.

Can J Physiol Pharmacol 2021 May 28:1-8. Epub 2021 May 28.

Área Farmacología, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, CONICET, Rosario, Santa Fe 2000, Argentina.

This work assessed the time course of water renal management together with aquaporin-2 (AQP2) kidney expression and urinary AQP2 levels (AQP2u) in obstructive nephropathy. Adult male Wistar rats were monitored after 1, 2, and 7 days of bilateral ureteral release (bilateral ureteral obstruction (BUO); BUO-1, BUO-2 and BUO-7). Renal water handling was evaluated using conventional clearance techniques. Read More

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Long-Term Renal Transplant Outcome in Patients With Posterior Urethral Valves. Prognostic Factors Related to Bladder Dysfunction Management.

Front Pediatr 2021 11;9:646923. Epub 2021 May 11.

Department of Pediatric Urology, Hospital Universitario La Paz, Madrid, Spain.

To obtain a successful renal transplant (RT) outcome in patients with posterior urethral valves (PUV), it is necessary to accomplish an adequate bladder dysfunction treatment. Our aim was to determine prognostic factors related to bladder dysfunction management in long-term RT outcome in patients with PUV. A retrospective review of patients with PUV who received a first RT after 1985 in our institution with at least 5 years of follow-up was performed. Read More

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Risk factors and clinical relevance of positive urine cultures in cats with subcutaneous ureteral bypass.

BMC Vet Res 2021 May 27;17(1):199. Epub 2021 May 27.

Department of Small Animal Surgery, Vetagro Sup, Campus Vétérinaire de Lyon, Marcy l'Etoile, France.

Background: The objective of the study was to report the incidence and risk factors associated with positive urine bacterial cultures as well as long-term outcome in cats with subcutaneous ureteral bypass (SUB) devices.

Results: Medical records of cats that underwent SUB device placement were retrospectively reviewed. Signalment of the cat, laterality of the ureteral obstruction, surgery, anesthesia and hospitalization duration, bacterial culture results and follow-up data were retrieved. Read More

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Hybrid Retroperitoneoscopic Pyeloplasty for Congenital Ureteropelvic Junction Obstruction in Infants Weighing Less than 10 kg.

J Laparoendosc Adv Surg Tech A 2021 May 27. Epub 2021 May 27.

Division of Pediatric Surgery, Department of Surgery, Taichung Veterans General Hospital, Taichung, Taiwan, Republic of China.

Success rate of laparoscopic pyeloplasty for ureteropelvic junction obstruction (UPJO) in children is comparable with open pyeloplasty. Prolonged ileus and injury to adjacent viscera more often occurred in transperitoneal approach; however, longer operation time is noted in retroperitoneal approach. This study presented a hybrid retroperitoneoscopic pyeloplasty (HRP), for congenital UPJO in infants weighing <10 kg. Read More

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Rare case: Ureteropelvic junction complication presenting with bilateral labial abscesses and urosepsis requiring nephrectomy.

Urol Case Rep 2021 Jul 7;37:101705. Epub 2021 May 7.

Department of Pediatric Urology, Augusta University, 1446 Harper St. Augusta, GA, 30912, USA.

Ureteropelvic junction obstruction (UPJO) is the most common cause of urinary tract obstruction in pediatric patients. Debates in management include ureteral stent versus nephrostomy tube placement prior to surgical correction if intervention is warranted. We present a female patient with left UPJO, diagnosed at 15-years-old, treated with ureteral stent placement. Read More

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