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Ureter obstruction

Wei Phin Tan, Ulku C Turba, Leslie A Deane
INTRODUCTION: We describe a case of renal pelvi-ureteric fungus ball managed with placement of two nephrostomy tubes and amphotericin B irrigation through a nephrostomy tube with the other to free drain. CASE REPORT: A 46-year-old man with uncontrolled Type 2 diabetes mellitus was referred to the urology clinic for workup of recurrent urinary tract infection. Urine culture grew Candida albicans. The patient was started on oral fluconazole therapy. Cystoscopy and cystogram revealed a grade 3 left vesicoureteral reflux and right retrograde pyelogram revealed a filling defect in the right renal pelvis extending into the proximal ureter with severe hydroureteronephrosis...
October 15, 2016: Urologia
Myong Kim, Bumsik Hong, Hyung Keun Park
PURPOSE: To evaluate the long-term clinical efficacy and safety of double-layered polytetrafluoroethylene membrane-covered self-expandable segmental metallic stents (Uventa) in patients with chronic ureteral obstruction. MATERIALS AND METHODS: In a retrospective study, a total of 50 ureter units (44 patients) with chronic obstructions were included from July 2010 to May 2015. Indications for Uventa placement were primary stenting for malignant ureteral obstruction, failed conventional polymeric Double-J stent (PS) or percutaneous nephrostomy (PCN) technique, with comorbidities or fears limiting PS/PCN changes, or with irritation or pain due to PS/PCN...
October 13, 2016: Journal of Endourology
J C Gómez-Blanco, J Martínez-Reina, D Cruz, J Blas Pagador, F M Sánchez-Margallo, F Soria
: The mechanics of urine during its transport from the renal pelvis to the bladder is of great interest for urologists. The knowledge of the different physical variables and their interrelationship, both in physiologic movements and pathologies, will help a better diagnosis and treatment. The objective of this chapter is to show the physics principles and their most relevant basic relations in urine transport, and to bring them over the clinical world. For that, we explain the movement of urine during peristalsis, ureteral obstruction and in a ureter with a stent...
October 2016: Archivos Españoles de Urología
Junichiro Kawamura, Masaki Tani, Kimiaki Sumida, Takefumi Yazawa, Junya Kawasoe, Michihiro Yamamoto, Hideki Harada, Hidekazu Yamamoto, Masazumi Zaima
PURPOSE: Cancerous involvement of a ureter is sometimes encountered in pelvic surgery for malignancy. We usually perform transureteroureterostomy (TUU) in cases of unilateral lower ureteral cancerous involvement. We report the outcomes in patients treated with TUU in our institute. METHODS: We retrospectively reviewed the medical records of 11 patients who underwent TUU between June 2006 and September 2015. RESULTS: The primary disease was colon cancer in five patients, rectal cancer in four, and uterine cervical cancer and ovarian cancer in one patient each...
October 6, 2016: International Journal of Colorectal Disease
Patrick-Julien Treacy, Art R Rastinehad, Laetitia Imbert de la Phalecque, Laetitia Albano, Matthieu Durand
Background: Ureteral stenosis is part of the common complications of renal graft reported in 3% to 7% of cases. Multiple treatments have been introduced regarding length and position of the stenosis. Metal stents for urologic purpose were created in 1998. Double percutaneous antegrade and transurethral retrograde access to a ureteral stenosis to a long-term metal stent procedure has been rarely described. Case Presentation: Here, we present a case of a ureteral stricture in a double ipsilateral kidney graft with a common ureter...
2016: J Endourol Case Rep
Barak Rosenzweig, Yoram Mor, Tomer Erlich, Menachem Laufer, Harry Winkler, Issac Kaver, Jacob Ramon, Zohar A Dotan
INTRODUCTION: Ureteral strictures can result in obstructive nephropathy and renal function deterioration. Surgical management of ureteral defects, especially in the proximal- and mid-ureter, is particularly challenging. Our purpose was to analyze the long-term outcomes of urothelial-based reconstructive surgery for upper- and mid-ureteral defects. METHODS: We conducted a retrospective analysis of a single tertiary centre's database, including 149 patients treated for ureteral defects between 2001 and 2011...
September 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Alok Sharma, Kushaljit Singh Sodhi, Akshay Kumar Saxena, Anmol Bhatia, Prema Menon, Katragadda L N Rao, Niranjan Khandelwal
AIMS: To compare intravenous urography (IVU) and magnetic resonance urography (MRU) in the preoperative evaluation of pelvi-ureteric junction obstruction (PUJO) in children. MATERIALS AND METHODS: A total of 35 children up to 10 years of age in whom unilateral or bilateral PUJO were suspected on ultrasonography were enrolled in this prospective study. All children underwent IVU and MRU, and the findings were compared. RESULTS: Of the 70 kidneys evaluated, 14 (20%) were not visualized on IVU because of nonexcretion of contrast, whereas all the 70 (100%) kidneys were visualized on MRU...
October 2016: Journal of Indian Association of Pediatric Surgeons
Priyank Yadav, Hira Lal, Devarshi Srivastava, Pankaj Gaur
Most of the developmental anomalies of inferior vena cava are asymptomatic. The retrocaval and retroiliac ureter however, commonly present with symptoms due to ureteric obstruction. We present interesting computed tomography images of a 30-year old male who was symptomatic for right upper ureteric obstruction and the ureter was coursing between the two common iliac veins that were uniting abnormally high at the level of right renal hilum with absence of infrarenal inferior vena cava.
September 29, 2016: Urology
Ya Wang, Ying Le, Jun-Yu Xue, Zong-Ji Zheng, Yao-Ming Xue
TGF-β1-induced epithelial to mesenchymal transition (EMT) process of tubular epithelial cells plays a leading role in the occurrence and progression of renal fibrosis as seen in diabetic nephropathy (DN). High mobility group AT-hook 2 (HMGA2) is considered to be involved in TGF-β1-mediated EMT via multifactorial mechanisms. Specific microRNAs (miRNAs) are closely associated with EMT, and here we focused on let-7d miRNA as a regulator of HMGA2. This study aims to investigate the effects of HMGA2 on EMT process induced by TGF-β1 using small interfering RNA (siRNA) technique in vitro, and further explore the potential role of let-7d miRNA during renal fibrosis in DN...
October 28, 2016: Biochemical and Biophysical Research Communications
Lara Cusack, Rodney Schnellbacher, Elizabeth W Howerth, David A Jiménez, Joerg Mayer, Stephen Divers
An adult, intact male sugar glider ( Petaurus breviceps ) presented for acute caudal abdominal swelling. Treatment by the referring veterinarian included aspiration of urine from the swelling. On physical examination, mild depression, pale mucus membranes, and caudal abdominal swelling were noted. Focused ultrasonographic assessment revealed a fluid-filled caudal abdominal structure and subjective bladder wall thickening. The following day, the sugar glider was severely depressed. Hematology results included hypoglycemia, hyperkalemia, hyponatremia, and azotemia...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
Amine Slaoui, Souhail Regragui, Abdelouahad Lasri, Tarik Karmouni, Khalid El Khader, Abdellatif Koutani, Ahmed Ibn Attya
BACKGROUND: Congenital malformations of the seminal vesicle are uncommon, and most of them are cystic malformations. If an insult occurs between the 4th and the 13 h gestational week, the embryogenesis of the kidney, ureter, seminal vesicle, and vas deferens could be altered. Cysts of the seminal vesicle may appear with a mass effect, dysuria, epididymitis, or obstruction of the gastrointestinal and genitourinary tracts. Approximately two thirds of them are associated with ipsilateral renal agenesis, because both the ureteral buds and seminal vesicles originate from the mesonephric (Wolffian) duct...
2016: Basic and Clinical Andrology
Liangsheng Lu, Yunli Bi, Xiang Wang, Shuangsui Ruan
PURPOSE: Midureteral obstruction is an extremely rare condition. This retrospective study assessed the outcomes of laparoscopic ureteroureterostomy (UU) in 13 children with midureteral obstructions. METHODS: Records of patients with midureteral obstruction who underwent laparoscopic end-to-end UU between July 2011 and August 2015 were reviewed. The medical records comprised patient demographic data, intraoperative details, postoperative outcomes, and related complications...
September 26, 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
Tinus du Toit, Lisa Kaestner, Elmi Muller, Delawir Kahn
We report the first documented case of an inguinal hernia containing bladder, resulting in contralateral allograft hydroureteronephrosis. A 39 year old male patient presented with allograft dysfunction, a contralateral inguino-scrotal hernia and marked hydroureteronephrosis on ultrasound. Percutaneous nephrostogram and a retrograde cystogram suggested bladder herniation with incorporation of the contralateral ureteroneocystostomy into the hernia. Paraperitoneal bladder herniation was confirmed at surgery and hernioplasty was performed...
September 19, 2016: American Journal of Transplantation
Nuno Fidalgo, Hugo Pinheiro, Frederico Ferronha, Jorge Morales, Luís Campos Pinheiro
The retrocaval ureter is a rare congenital entity, classically managed with open pyeloplasty techniques. The experience obtained with the laparoscopic approach of other more frequent causes of ureteropelvic junction (UPJ) obstruction has opened the method for the minimally invasive approach of the retrocaval ureter. In our paper, we describe a clinical case of a right retrocaval ureter managed successfully with laparoscopic dismembered pyeloplasty. The main standpoints of the procedure are described. Our results were similar to others published by other urologic centers, which demonstrates the safety and feasibility of the procedure for this condition...
2016: Case Reports in Urology
Sara E Wobker, Manju Aron, Jonathan I Epstein
In the upper genitourinary tract of the ureter and renal pelvis, any invasion of urothelial carcinoma (UC) beyond the thin muscularis is considered pT3 disease, which may prompt adjuvant chemotherapy. Ureteroscopy is commonly used in the workup of these lesions to obtain tissue biopsies and cytology specimens, or to place stents for the relief of obstructive symptoms. The current study describes 4 cases in which the presence of small nests of urothelium in periureteral and peripelvic soft tissue was noted after ureteroscopic instrumentation, mimicking high-stage UC...
September 14, 2016: American Journal of Surgical Pathology
Deniz Atasoy, Afag Aghayeva, Onur Bayraktar, Volkan Ozben, Bilgi Baca, Ismail Hamzaoglu, Tayfun Karahasanoglu
INTRODUCTION: After its description in 1980, restorative proctocolectomy has become the procedure of choice for ulcerative colitis (UC). The supposed advantages of the laparoscopy have proven beneficial for colorectal operations but a standard technique in laparoscopic restorative proctocolectomy (LRP) is still lacking. In this study, we present our technique of LRP with vascular high ligation (VHL) and embryological dissection (ED). MATERIALS AND METHODS: This retrospective study reviewed patients who underwent LRP with VHL for UC from January 2009 to June 2015...
September 14, 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
S A Begum, T S Chowdhury, T Mahmud, S Chowdhury, T A Chowdhury, S J Urmi, S Khatun, A Nessa, N Fatema
A 25 years married women having one child delivered vaginaly presented in the department of Obs & Gynae, Bangabandhu Sheikh Mujib Medical University, Bangladesh on April 2013 with pelvic pain and discomfort. No history of previous pelvic trauma was present. Patient examination showed a isolated mass in the right lower abdomen, right adnexa, extending to the pelvic wall upto lower end of ureter. Tumor markers were within normal limit. Intravenous pyelogram (IVP) showed mild right hydroureter and hydronephrosis with obstruction at the lower end of ureter...
July 2016: Mymensingh Medical Journal: MMJ
Jang-Hee Cho, Hye-Myung Ryu, Eun-Joo Oh, Ju-Min Yook, Ji-Sun Ahn, Hee-Yeon Jung, Ji-Young Choi, Sun-Hee Park, Yong-Lim Kim, Ihm Soo Kwak, Chan-Duck Kim
Alpha1-antitrypsin (AAT) exerts its anti-inflammatory effect through regulating the activity of serine proteinases. This study evaluated the inhibitory effects of AAT against the transforming growth factor (TGF)-β1 induced epithelial-to-mesenchymal transition (EMT) in unilateral ureter obstruction (UUO) mice and Madin-Darby canine kidney (MDCK) cells. C57BL/6 mice with induced UUO were injected intraperitoneally with AAT (80 mg/Kg) or vehicle for 7 days. MDCK cells were treated with TGF-β1 (2 ng/mL) for 48 hours to induce EMT, and co-treated with AAT (10 mg/mL) to inhibit the EMT...
2016: PloS One
Shunsuke Uno, Ryota Hase, Akihiro Toguchi, Yoshihito Otsuka, Naoto Hosokawa
Listeria monocytogenes is a well-known cause of meningitis, colitis, and bacteremia; however, obstructive pyelonephritis caused by L. monocytogenes has never been reported. We herein report on a 90-year-old Japanese woman with obstructive pyelonephritis and bacteremia due to uterus carcinoma invading the ureter. She was admitted to our hospital complaining of fever and chills, and her physical examination revealed left costovertebral angle tenderness. Computed tomography showed hydronephrosis and complete ureteral obstruction due to tumor invasion...
September 2, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
Wei Liu, Guoqiang Du, Feng Guo, Rui Ma, Rongde Wu
PURPOSE: To describe a modified ureteral orthotopic reimplantation method in infant with primary obstructive megaureter (POM) and report our initial experience. METHODS: Thirteen children with POM (range 1-7 months) underwent modified transvesical ureteral implantation surgery. Treatment consists of transecting the ureter proximal to the obstruction and performing orthotopic reimplantation in end freely fashion with distal ureter protruding into the bladder, providing dilated ureteral diameter: ureteral exposure length in bladder ratio of 1:1...
September 2, 2016: International Urology and Nephrology
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