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Ureteropelvic junction stenosis

Salvatore Fabio Chiarenza, Cosimo Bleve, Paolo Caione, Maria Escolino, Simona Gerocarni Nappo, Rosa Perretta, Angela La Manna, Ciro Esposito
BACKGROUND: This article aimed to evaluate the outcome of laparoscopic vascular hitch (VH) as an effective alternative to dismembered pyeloplasty in the treatment of children with extrinsic ureteropelvic junction obstruction (UPJO) by crossing vessels (CVs), by reporting the experience of three Italian centers of Pediatric Surgery. METHODS: From 2006 to 2014, 54 children (18 girls and 36 boys, average age 10.7 years) affected by suspected extrinsic UPJO by CV were treated in three different institutions: 51 patients underwent laparoscopic VH, while 3 patients, in which a coexisting intrinsic etiology of UPJO was doubtful, underwent laparoscopic dismembered pyeloplasty...
June 7, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
D Gil-Sousa, D Oliveira-Reis, F Teves, P Príncipe, A Castro-Henriques, J Soares, A Fraga, M Silva-Ramos
BACKGROUND: Kidney transplantation (KT) is the definitive treatment for ESRD. Ureteral stenosis (US) is one of the most common urologic complications and has been reported in 2.6%-15% of KTs. METHODS: We reviewed data for 973 consecutive KT procedures performed at our center from January 2004 to September 2014, with evaluation of US management and recurrence rate. RESULTS: The 973 KTs were performed with the use of the direct ureterovesical (UV) implantation Paquin technique, and the mean follow-up time was 44...
May 2017: Transplantation Proceedings
Pernille Hammershøj Jensen, Kasper Drimer Berg, Nessn H Azawi
OBJECTIVE: Approximately one in five patients with ureteropelvic junction stenosis (UPJS) also present with renal or ureteral stones. For patients with UPJS, the European Association of Urology guidelines currently recommend that robot-assisted pyeloplasty (RAP) and pyelolithotomy are performed as two separate procedures. The aim of the present study was to evaluate the feasibility and safety of RAP with concomitant pyelolithotomy (RAP + P) in patients diagnosed with UPJS and renal stones...
April 11, 2017: Scandinavian Journal of Urology
Mansour Mollaeian, Maryam Ghavami-Adel, Farid Eskandari, Arash Mollaeian
BACKGROUND: Pyeloplasty for ureteropelvic junction obstruction correction is a common procedure, but the optimal method for protective diversion after pyeloplasty is still a matter of debate. OBJECTIVES: Here, we present our clinical trial experience using a single percutaneous externalized nephroureteral (NU) 5-Fr catheter (infant feeding tube) with multiple side holes as the sole instrument of drainage to provide a protective mechanism. MATERIALS AND METHODS: In this prospective study, we analyzed the charts of 142 patients who underwent pyeloplasty from August 2001 through October 2008...
October 2016: Iranian Journal of Pediatrics
Sabrina Thalita Reis, Kátia R M Leite, Nayara Izabel Viana, Roberto Iglesias Lopes, Caio Martins Moura, Renato F Ivanovic, Marcos Machado, Francisco Tibor Denes, Amilcar Giron, William Carlos Nahas, Miguel Srougi, Carlo C Passerotti
BACKGROUND: Ureteropelvic junction obstruction (UPJO) diagnosed prenatally occurs in 1:150 - 1:1200 pregnancies. Although many studies investigating the molecular changes of this obstructed segment have been performed, the underlying mechanisms are still unclear. The role of extracellular matrix (ECM) components remains controversial, and the investigations in the field of ECM changes, might help the better understanding of the pathogenesis of this common condition. The aim of the present study was to investigate for the first time in the literature whether MMP9 and its specific inhibitors, TIMP1 and RECK, are expressed in a reproducible, specific pattern in UPJ...
July 23, 2016: BMC Urology
Christopher E Bayne, Craig A Peters
INTRODUCTION: Congenital infundibulopelvic stenosis (IFPS) is a rare renal dysmorphism marked by dilated calyces proximal to diminutive infundibulum and renal pelvises. The entity is theorized to exist on the spectrum of congenital obstructive renal diseases between ureteropelvic junction obstruction and multicystic dysplasia. OBJECTIVE: This case series sought to review and present the surgical management of three cases of IFPS with progressive renal insufficiency...
December 2016: Journal of Pediatric Urology
Alberto Parente, Jose-Maria Angulo, Rosa Romero, Laura Burgos, Ruben Ortiz
AIM: To assess if calibration of the ureteropelvic junction (UPJ) using a high-pressure balloon inflated at the UPJ level in patients with suspected crossing vessels (CV) could differentiate between intrinsic and extrinsic stenosis prior to laparoscopic vascular hitch (VH). MATERIALS AND METHODS: We reviewed patients with UPJO diagnosed at childhood or adolescence without previous evidence of antenatal or infant hydronephrosis (10 patients). By cystoscopy, a high-pressure balloon is sited at the UPJ and the balloon inflated to 8-12 atm under radiological screening...
January 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Tuna Mut, Ömer Acar, Tayfun Oktar, Işın Kılıçaslan, Tarık Esen, Haluk Ander, Orhan Ziylan
INTRODUCTION: Based on current knowledge, it is possible to have an initial diagnosis of intrinsic or extrinsic ureteropelvic junction obstruction (UPJO) based solely on clinical and imaging findings. However, it may not be possible to strictly discriminate an intrinsic case with an additional extrinsic component from a primarily intrinsic stenosis because of lower pole aberrant vessels. These two disorders may coexist or trigger each other. Herein, we aimed to compare the histological changes observed in intrinsic and extrinsic types of UPJO...
August 2016: Journal of Pediatric Urology
Tomaž Smrkolj, Domagoj Šalinović
We report a rare case of a patient with a large stone encrusted on a nitinol mesh stent in the ureteropelvic junction. The stent was inserted in the year 2000 after failure of two pyeloplasty procedures performed due to symptomatic ureteropelvic junction stenosis. By combining minimally invasive urinary stone therapies-extracorporeal shock wave lithotripsy, semirigid ureterorenoscopy with laser lithotripsy, and percutaneous nephrolithotomy-it was possible to completely remove the encrusted stone and nitinol mesh stent that was implanted for 15 years, rendering the patient symptom and obstruction free...
2015: Case Reports in Urology
Dong Seok Han, Seung Mo Yuk, Chang Shik Youn, Geon Park, Hae Joung Sul, Hoon Jang
BACKGROUND: Primary mucinous adenocarcinoma of the renal pelvis is extremely rare, with only ~100 cases reported till now. Its presumed pathogenesis includes glandular metaplasia of the urothelium of the calyces and the pelvis and malignant transformation of the metaplasia. Unfortunately, it has no characteristic symptoms or radiological features. We report a case of primary mucinous adenocarcinoma of the renal pelvis misdiagnosed as ureteropelvic junction stenosis with a renal pelvis stone...
2015: World Journal of Surgical Oncology
Bo Yang, Hao Hu, Jia Wang, Tao Xu, Xiao-bo Huang, Xiao-feng Wang
OBJECTIVE: To report a new endourological technique-percutaneous "sandwich" endopyeloplasty for ureteropelvic junction obstruction (UPJO). METHODS: In the study, 71 patients with UPJO had endopyeloplasty by percutaneous balloon dilation before and after endopyelotomy, so called "sandwich" endopyeloplasty. The ureter stent was removed after 2 months and all the patients were followed up at least 12 months by ultrasound, intravenous urogram (IVU) or renal scintigraphy...
August 18, 2015: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Aliasghar Yarmohamadi, Parisa Saeedi, Amir Hoghabrosadat
BACKGROUND: Anderson-Hynes dismembered pyeloplasty is the gold standard therapeutic approach to ureteropelvic junction obstruction (UPJO). Use of a drainage method to protect the suture line from leakage is a matter of controversy. OBJECTIVES: We have compared the surgical outcome of Anderson-Hynes dismembered pyeloplasty for UPJO repair, with or without internal stenting. PATIENTS AND METHODS: Eighty-two patients with UPJO were evaluated from 1996 to 2002...
May 2015: Nephro-urology Monthly
M Traumann, L A Kluth, M Schmid, C Meyer, B Schwaiger, C Rosenbaum, P Schriefer, M Fisch, R Dahlem, D Seiler, S Ahyai, A Haese, F K-H Chun
PURPOSE: With the development of the robot-assisted surgical technique, robot-assisted pyeloplasty (RAP) has become established as an alternative to open and laparoscopic surgery. Currently there are only a few single-center studies with larger numbers of cases and long-term results. The aim of this study was to investigate perioperative and long-term postoperative success rates of Anderson-Hynes robot-assisted pyeloplasty (RAP) at a single center. MATERIALS AND METHODS: We retrospectively reviewed our RAP experience of 61 patients performed by two surgeons between 2004 and 2013 regarding operating time, length of hospital stay, perioperative complication, and success...
May 2015: Der Urologe. Ausg. A
Juan Gómez Rivas, Sergio Alonso Y Gregorio, María A Portilla Eastmond, Angel Tabernero Gómez, Jesús Cisneros Ledo, Luis Hidalgo Togores, Jesús Javier de la Peña Barthel
INTRODUCTION: Laparoscopic pyeloplasty was first described by Schuessler. During the last decade, this technique has been developed in order to achieve the same results as open surgery, with lower rates of morbidity and complications. In this study we review our experience using laparoscopic pyeloplasty as the gold standard for the treatment of the ureteropelvic junction obstruction (UPJO). MATERIAL AND METHODS: We performed a retrospective review of 62 laparoscopic pyeloplasties carried out at our center...
2013: Central European Journal of Urology
A Nicholas Kurup
Although percutaneous ablation of small renal masses is generally safe, interventional radiologists should be aware of the various complications that may arise from the procedure. Renal hemorrhage is the most common significant complication. Additional less common but serious complications include injury to or stenosis of the ureter or ureteropelvic junction, infection/abscess, sensory or motor nerve injury, pneumothorax, needle tract seeding, and skin burn. Most complications may be treated conservatively or with minimal therapy...
March 2014: Seminars in Interventional Radiology
Xisheng Wang, Zejian Zhang, Naixiong Peng, Chunxiao Liu
OBJECTIVE: To compare classical open pyeloplasty with retroperitoneal laparoscopic pyeloplasty in effectiveness, potential advantages and complications. MATERIALS AND METHODS: Between March 2006 and April 2010, 113 patients with ureteropelvic junction obstruction underwent retroperitoneal laparoscopic dismembered pyeloplasty were retrospectively compared with those of 59 patients who underwent open dismemberse pyeloplasty through a retroperitoneal flank approach...
2013: Journal of X-ray Science and Technology
Alberto Parente, José-María Angulo, Rosa Maria Romero, Susana Rivas, Laura Burgos, Ana Tardáguila
OBJECTIVE: To analyze the usefulness of dilatation in the treatment of ureteropelvic junction obstruction (UPJ) in children <18 months of age, including newborns and infants. METHODS: Patients (n = 50; <18 months of age) were diagnosed using abdominal ultrasound, cystogram, and diuretic renography. Treatment was with endourologic retrograde balloon dilatation under fluoroscopic guidance. The balloons were, in all cases, semicompliant with a profile of 5 mm, 6 mm, or 7 mm...
November 2013: Urology
Lessandro Curcio, Antonio Claudio Ahouagi, Juan Renteria, Igor Rui Araujo, Daniel Presto
OBJECTIVE: About 10% of renal pelvis are bifids and not so there is a larger index of kidney disease over the normal pelves. The laparoscopy and minimally invasive techniques treat the ureteropelvic junction disease in a low agressive manner. We showed a video of an atypical pyeloplasty of ureteropelvic junction obstruction of a lower unit. The patient is a 33 year-old woman with an intermitent lumbar pain for 3 years. Your image exams showed a bifid left pelvis with a stenosis of the lower unit...
May 2013: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Morihiro Nishi, Masatsugu Iwamura, Shinji Kurosaka, Tetsuo Fujita, Kazumasa Matsumoto, Kazunari Yoshida
INTRODUCTION: The objective of this study is to clarify whether symphysiotomy is an essential procedure combined with the laparoscopic pyeloplasty for the surgical treatment of ureteropelvic junction obstruction related to horseshoe kidney. METHODS: We retrospectively reviewed five horseshoe kidney patients with symptomatic hydronephrosis who underwent laparoscopic transperitoneal Anderson-Hynes pyeloplasty without symphysiotomy between July 2002 and October 2011...
August 2013: Asian Journal of Endoscopic Surgery
Asaph Rolnitsky, Paul Merlob, Gil Klinger
Oxcarbazepine is an antiepileptic agent that has been used during pregnancy, although its safety during pregnancy has not been sufficiently established. This article presents an infant born with renal and cardiac malformations who developed a withdrawal syndrome and hyponatremia following in utero exposure to oxcarbazepine. The infant was born at 35 weeks' gestation by urgent cesarean section to a mother in status epilepticus who had been treated with oxcarbazepine throughout her pregnancy. Evaluation for congenital anomalies identified mild aortic stenosis, a bicuspid aortic valve, patent foramen ovale, patent ductus arteriosus, and severe left hydronephrosis due to left ureteropelvic junction stenosis...
June 2013: Pediatric Neurology
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