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Ureteropelvic junction stenosis

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https://www.readbyqxmd.com/read/29244271/laparoscopic-dismembered-pyeloplasty-combined-with-port-entrance-flexible-renoscopic-lithotripsy
#1
Kaan Gokcen, Gokhan Gokce, Gokce Dundar, Resul Cicek, Halil Gulbahar, Emin Yener Gultekin
INTRODUCTION: Ureteropelvic junction obstruction and concomitant calculus disease may coexist. We demonstrate our use of flexible renoscopy during laparoscopic pyeloplasty for caliceal stone removal. PATIENT AND METHODS: A 28-year-old female patient presented with recurrent attacks of flank pain of two years duration. When noncontrast-CT and DTPA were performed, the patient was diagnosed with ureteropelvic junction stenosis and 3 stones with a total burden of 14mm in the lower pole of right kidney...
December 18, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29169895/additional-features-of-gillespie-syndrome-in-two-brazilian-siblings-with-a-novel-itpr1-homozygous-pathogenic-variant
#2
Daniel R Carvalho, João Eugenio G Medeiros, Daniela Sebestyan M Ribeiro, Bernardo Jaf Martins, Nara L M Sobreira
Gillespie syndrome (GS) [MIM: 206700] is a very rare condition characterized by bilateral iris defect, congenital hypotonia, cerebellar ataxia and intellectual disability. The typical iris anomaly is considered necessary to the diagnosis of GS. Recently, variants in ITPR1 were described causing GS. Non-neurological features were reported in few patients. Here we describe two consanguineous siblings with GS and a novel homozygous ITPR1 pathogenic variant (p.N984fs). They also present a cardiac defect (pulmonary valve stenosis) and one sib had a genitourinary malformation (ureteropelvic junction obstruction)...
November 20, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29133170/hydronephrosis-and-crossing-vessels-in-children-optimization-of-diagnostic-therapeutic-pathway-and-analysis-of-color-doppler-ultrasound-and-magnetic-resonance-urography-diagnostic-accuracy
#3
M C Y Wong, G Piaggio, M B Damasio, C Molinelli, S M Ferretti, A Pistorio, G Ghiggeri, M L Degl'Innocenti, A Canepa, V Incarbone, G Mattioli
INTRODUCTION: Ureteropelvic junction obstruction (UPJO) is one of the most frequent urological diseases affecting the pediatric population. It can be due to both intrinsic stenosis of the junction and extrinsic causes such as the presence of crossing vessels (CVs), which can be detected by color Doppler ultrasound (CD-US). Magnetic resonance urography (MRU) is a good alternative, but sedation and infusion of a contrast agent are required. OBJECTIVE: The aim of this study was to analyze the diagnostic accuracy of CD-US and MRU in visualizing CVs in pediatric hydronephrosis, in order to decide the correct diagnostic pathway in the pre-operative phase...
October 27, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28992643/-treatment-of-ureteropelvic-junction-obstruction-in-adult-age
#4
Sandra Mühlstädt, Jennifer Kranz, Joachim A Steffens, Paolo Fornara
Ureteropelvic stenosis, also known as ureteropelvic junction obstruction, is an obstruction in the region of the pyeloureteral junction resulting in a urinary discharge disorder of the renal pelvis, which requires treatment.Since the first description of pyeloplasty by Trendelenburg in 1886 and the successful establishment of open pyeloplasty by Anderson and Hynes in 1949, the treatment strategies for ureteropelvic junction obstruction have developed considerably, especially in the last two decades. Although open pyeloplasty is still considered to be the gold standard, this concept is supplemented by modern minimally-invasive techniques today...
October 9, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28988673/predictive-value-of-cortical-transit-time-on-mag3-for-surgery-in-antenatally-detected-unilateral-hydronephrosis-caused-by-ureteropelvic-junction-stenosis
#5
Jun Nyung Lee, Jun-Koo Kang, Shin Young Jeong, So Mi Lee, Min Hyun Cho, Yun-Sok Ha, Hyun Tae Kim, Tae-Hwan Kim, Eun Sang Yoo, Tae Gyun Kwon, Sung Kwang Chung
BACKGROUND: In children with antenatally detected hydronephrosis caused by ureteropelvic junction (UPJ) stenosis, the main challenge is preserving renal function by identifying children who require early surgical intervention from those for whom watchful waiting may be appropriate because of the potential for spontaneous resolution without a significant loss of renal function. OBJECTIVE: To assess the impact of initial cortical transit time (CTT) on technetium-99m mercaptoacetyltriglycerine (MAG3) diuretic renogram on the need for surgery in children with antenatally detected unilateral hydronephrosis caused by UPJ stenosis...
September 19, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28861311/our-experiences-with-robot-assisted-laparoscopic-surgery-in-pediatric-patients-the-first-case-series-from-turkey
#6
Yusuf Kibar, Serdar Yalçın, Engin Kaya, Burak Köprü, Turgay Ebiloğlu, Giray Ergin, Hüseyin Tomruk
OBJECTIVE: Robotic surgery is a leading treatment option for minimally invasive surgery and has an increasing popularity in pediatric population, as well. In this article, we reported our case series of robot-assisted laparoscopic surgery in pediatric population. MATERIAL AND METHODS: We retrospectively reviewed 29 consecutive pediatric patients who underwent robot- assisted procedures between May 2014 and October 2016. Patient demographics, hospitalization time, estimated blood loss, robotic time and total operative and peri-, and post-operative complications were evaluated...
September 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28774588/percutaneous-nephrostomy-placement-in-infants-and-young-children
#7
J Y Hwang, J H Shin, Y J Lee, H M Yoon, Y A Cho, K S Kim
PURPOSE: The purpose of this study was to evaluate the feasibility, safety, and clinical effectiveness of ultrasound and fluoroscopy-guided percutaneous nephrostomy (PCN) placement in infants and young children. MATERIALS AND METHODS: Between January 2000 and December 2015, 57 patients had a total of 66 fluoroscopically guided PCN placement procedures. There were 37 boys and 20 girls with a mean age 8.6±15.3 (SD) months (range: 1 day-75.5months). The most common underlying disease was upper-urinary-tract obstruction, including ureteropelvic-junction stenosis (27/66, 40...
July 31, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28590826/minimally-invasive-treatment-of-pediatric-extrinsic-ureteropelvic-junction-obstruction-by-crossing-polar-vessels-is-vascular-hitching-a-definitive-solution-report-of-a-multicenter-survey
#8
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...
September 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28457393/ureteral-stenosis-after-renal-transplantation-a-single-center-10-year-experience
#9
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
https://www.readbyqxmd.com/read/28398101/robot-assisted-pyeloplasty-and-pyelolithotomy-in-patients-with-ureteropelvic-junction-stenosis
#10
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
https://www.readbyqxmd.com/read/28203336/a-5-fr-externalized-nephroureteral-catheter-as-the-sole-protective-device-for-pediatric-pyeloplasty-the-experiences-of-142-patients
#11
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
https://www.readbyqxmd.com/read/27448803/mmp9-overexpression-is-associated-with-good-surgical-outcome-in-children-with-upjo-preliminary-results
#12
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
https://www.readbyqxmd.com/read/27378012/congenital-infundibulopelvic-stenosis-indications-for-intervention-surgical-technique-and-review-of-literature
#13
REVIEW
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
https://www.readbyqxmd.com/read/27136482/high-pressure-balloon-assessment-of-pelviureteric-junction-prior-to-laparoscopic-vascular-hitch
#14
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
https://www.readbyqxmd.com/read/27050811/intraoperative-inspection-of-the-ureteropelvic-junction-during-pyeloplasty-is-not-sufficient-to-distinguish-between-extrinsic-and-intrinsic-causes-of-obstruction-correlation-with-histological-analysis
#15
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
https://www.readbyqxmd.com/read/26697258/endoscopic-removal-of-a-nitinol-mesh-stent-from-the-ureteropelvic-junction-after-15-years
#16
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
https://www.readbyqxmd.com/read/26612470/primary-mucinous-cystadenocarcinoma-of-the-renal-pelvis-misdiagnosed-as-ureteropelvic-junction-stenosis-with-renal-pelvis-stone-a-case-report-and-literature-review
#17
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
https://www.readbyqxmd.com/read/26284400/-percutaneous-sandwich-endopyeloplasty-technique-a-new-endourological-measure-for-ureteropelvic-junction-obstruction
#18
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
https://www.readbyqxmd.com/read/26034744/surgical-results-of-anderson-hynes-dismembered-pyeloplasty-without-internal-drainage-in-adults-with-ureteroplevic-junction-obstruction
#19
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
https://www.readbyqxmd.com/read/25391441/-robot-assisted-laparoscopic-pyeloplasty-in-adults-excellent-long-term-results-of-primary-pyeloplasty
#20
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
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