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Dehong Liu, Huixia Zhou, Min Chao, Jinchun Qi, Huayu Wei, Nini An, Haitao Chen, Long Li
BACKGROUND: Transumbilical single-site multiport laparoscopic pyeloplasty (TSMLP) for children with ureteropelvic junction obstruction (UPJO) has become feasible and popular recently. The purpose of this study was to evaluate the safety and efficacy of TSMLP for pediatric UPJO in a large multicenter series. MATERIALS AND METHODS: Medical records of consecutive patients who underwent TSMLP for pediatric UPJO in six academic institutions between June 2010 and May 2015 were retrospectively analyzed...
March 28, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
Christopher Charles Khoo, Nikhil Ahluwalia, Jan Grace, Arun Sahai
A 37-year-old woman receiving in vitro fertilisation (IVF) treatment presented with lethargy, fevers and anuria. Her background included complex surgically managed Crohn's disease and mild right-sided hydronephrosis (with no evidence of obstruction on MAG3 renogram). On examination, she had a distended abdomen with generalised tenderness. Blood tests revealed an acute kidney injury and confirmed sepsis. She was found to have bilateral ureteric obstruction with worsening of the right-sided hydronephrosis and new-onset left-sided hydronephrosis secondary to bilateral ovarian masses, diagnosed as mild ovarian hyperstimulation syndrome (OHSS)...
November 24, 2016: BMJ Case Reports
Ciro Esposito, Cosimo Bleve, Maria Escolino, Paolo Caione, Simona Gerocarni Nappo, Alessandra Farina, Maria Grazia Caprio, Mariapina Cerulo, Angela La Manna, Salvatore Fabio Chiarenza
BACKGROUND: Congenital hydronephrosis due to intrinsic or extrinsic uretero-pelvic-junction (UPJ) obstruction (UPJO) is a common problem in childhood UPJO may be caused by intrinsic disorganization or by extrinsic compression from crossing vessels (CV); extrinsic causes usually present symptomatically in older children. This report the large Italian experience in the treatment of children with extrinsic-UPJO by CV. METHODS: We analyzed the data of 51 children (17 girls and 34 boys, median age 10, 7 years) affected by extrinsic-UPJO were treated in three Italian institutions with laparoscopic transposition of CV (Hellström Vascular Hitch modified by Chapman)...
October 2016: Translational pediatrics
Ana Isabel Santos, Liliana Violante, Susana Carmona, Ana Prata, Margarida Rodrigues Victor, Joaquim G Santos, Joaquim Araújo Sequeira, Marta Alves, Ana Luísa Papoila, Amy Piepsz
OBJECTIVE: This study aims to evaluate interobserver agreement on visual analysis of technetium-99m mercaptoacetyltriglycine (Tc-MAG3) renal tissue transit used for the evaluation of antenatal hydronephrosis. MATERIALS AND METHODS: Thirty-eight Tc-MAG3 diuretic renograms were retrospectively collected between 1 and 31 December 2015. The 1-min reframed images were presented to four nuclear medicine consultants and to two nuclear medicine residents, one in the first year of the training program and the others in their fourth and final year...
February 2017: Nuclear Medicine Communications
Paulo Renato Marcelo Moscardi, João Arthur Brunhara Alves Barbosa, Hiury Silva Andrade, Marcos Figueiredo Mello, Bruno Nicolino Cezarino, Lorena Marçalo Oliveira, Miguel Srougi, Francisco Tibor Dénes, Roberto Iglesias Lopes
PURPOSE: Failure after pyeloplasty for ureteropelvic junction obstruction in children may occur in up to 10% of cases. Therapeutic options include Double-J® stent placement, endoscopic treatment and reoperation. Laparoscopic and robotic reoperative modalities seem safe and efficacious, although pediatric series are limited in the literature. We report the largest known series of reoperative laparoscopic ureteropelvic junction obstruction repair in children and compare this approach to primary laparoscopic pyeloplasty...
March 2017: Journal of Urology
P Bragagnini Rodríguez, B Stors Sastre, R Fernández Atuan, R Delgado Alvira, M A Rihuete Heras, J Gracia Romero
OBJECTIVE: To evaluate the results of the retroperitoneal-assisted laparoscopic pyeloplasty (RALP) versus the mini posterior lumbotomy pyeloplasty (MPLP). MATERIAL AND METHODS: A retrospective study of 77 patients diagnosed with ureteropelvic junction obstruction between 2007 and 2013 was made, analyzing the surgical technique, complications and results. The anteroposterior pelvic diameter of the kidney, the thickness of the renal parenchyma, the renal function and the morphology of the renogram curve were also evaluated and compared...
April 15, 2015: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
Dapeng Jiang, Bingqiang Tang, Maosheng Xu, Houwei Lin, Longhu Jin, Lei He, Guofeng Xu, Xiaoliang Fang, Hongquan Geng
OBJECTIVE: To evaluate changes in functional and morphological outcomes in children with prenatally diagnosed Society of Fetal Urology (SFU) grades 3-4 ureteropelvic junction obstruction (UPJO) who underwent pyeloplasty at different ages. We also examined the effect of surgical wait time on recovery of renal function. MATERIALS AND METHODS: All patients (aged 0-12 months) with prenatally diagnosed SFU grades 3-4 UPJO who underwent pyeloplasty in a single center between January 2013 and December 2015 were reviewed...
October 17, 2016: Urology
Neslihan Karakurt, Nesrin Beşbaş, Ali Cansu Bozacı, Yelda Bilginer, Hasan Serkan Doğan, Serdar Tekgül
This study was performed to evaluate the role of postnatal ultrasonography (US) in predicting the final diagnosis and need of surgery of antenatal hydronephrosis patients. One hundred and twenty six renal units (RUs) of 76 patients with diagnosis of antenatal hydronephrosis (ANH) were studied. An early postnatal US no later than the first week of life was requested. Voiding cystourethrography (VCUG) and/or diuretic renogram (MAG3) was performed in children who had persistent or worsening hydronephrosis to make a certain diagnose of etiology...
November 2015: Turkish Journal of Pediatrics
Morihiro Nishi, Kazumasa Matsumoto, Tetsuo Fujita, Masatsugu Iwamura
INTRODUCTION: To evaluate the efficacy of laparoscopic pyeloplasty (LPP) for lower functioning kidney, we investigated the outcome of this procedure for patients with ureteropelvic junction obstruction with decreased renal function, defined as less than 20% split renal function. PATIENTS AND METHODS: Between October 1998 and June 2015, we performed transperitoneal dismembered LPP in 224 patients. Among them, 15 patients with less than 20% split renal function were included in this study...
November 2016: Journal of Endourology
Subramanian Vaidyanathan, Azi Samsudin, Gurpreet Singh, Peter L Hughes, Bakul M Soni, Fahed Selmi
INTRODUCTION: Paraplegic patients are at greater risk of developing complications following ureteroscopic lithotripsy because of urine infection associated with neuropathic bladder, difficulties in access due to altered anatomy of urinary bladder and urethra, spinal curvature, spasticity, and contractures. We report the occurrence of large subcapsular hematoma following ureteroscopy and discuss lessons we learn from this case. CASE REPORT: A 48-year-old male patient with spina bifida underwent ureteroscopy with laser lithotripsy and ureteric stenting for left ureteric stone and staghorn calculus with hydronephrosis; laser lithotripsy was repeated after 3 months; both procedures were performed by a senior urologist and did not result in any complications...
2016: International Medical Case Reports Journal
Manoj Kumar, Sanjeet Kumar Singh, Sohrab Arora, Varun Mittal, Nitesh Patidar, Sanjoy Kumar Sureka, M S Ansari
INTRODUCTION: The duration, methods and frequency of radiographic follow-up after pediatric pyeloplasty is not well-defined. We prospectively evaluated a cohort of children undergoing pyeloplasty to determine the method for follow-up. METHODS: Between 2000 and 2008, children undergoing pyeloplasty for unilateral ureteropelvic junction obstruction were evaluated for this study. All patients were evaluated preoperatively with protocol ultrasound (USG) and diuretic renal scan (RS)...
July 2016: Indian Journal of Urology: IJU: Journal of the Urological Society of India
Harun Ilhan, Hao Wang, Franz J Gildehaus, Carmen Wängler, Tanja Herrler, Andrei Todica, Julia Schlichtiger, Paul Cumming, Peter Bartenstein, Marcus Hacker, Alexander R Haug
BACKGROUND: Radiation-induced nephropathy is still dose limiting in radionuclide therapy of neuroendocrine tumors. We investigated the nephroprotective potential of the angiotensine converting enzyme inhibiting drug enalpril after [177Lu]-DOTATATE therapy in a murine model of radiation-induced nephropathy by renal scintigraphy. At first, the appropriate therapy activity to induce nephropathy was identified. Baseline scintigraphy (n = 12) entailed 12-min dynamic acquisitions after injection of 25 MBq [99mTc]-MAG3, which was followed by radionuclide therapy at four escalating activities of [177Lu]-DOTATATE: group (Gp) 1: 10 MBq; Gp 2: 20 MBq; Gp 3: 40 MBq; Gp 4: 65 MBq...
December 2016: EJNMMI Research
Alberto Parente, Laura Perez-Egido, Rosa Maria Romero, Ruben Ortiz, Laura Burgos, Jose Maria Angulo
PURPOSE: The aim of this study is to analyze results of retrograde endopyelotomy with cutting balloon for treatment of ureteropelvic junction obstruction (UPJO) in infants. METHODS: We routinely treat patients with UPJO under 18 months of age with retrograde high-pressure balloon dilatation of the pelviureteric junction (PUJ). During the procedure, in these cases where narrowing at the PUJ persists, endopyelotomy with cutting balloon is performed. Endopyelotomy is performed over guidewire with 5-mm Cutting Balloon™ under fluoroscopic control...
2016: Frontiers in Pediatrics
Jacob T Ark, Christopher R Mitchell, Tracy P Marien, S Duke Herrell
OBJECTIVE: To use basic measurements on contrasted computerized tomography (CT) to reliably determine whether a kidney with ureteropelvic junction obstruction (UPJO) is definitively functional (≥30% differential renal function [DRF]) or nonfunctional (≤10% DRF), obviating the need for nuclear medicine renogram (RG) to determine DRF. METHODS: This is a single institution, retrospective cohort of patients diagnosed with UPJO who underwent either pyeloplasty or nephrectomy between December 2004 and December 2014...
November 2016: Urology
Mandy Rickard, Luis H Braga, Shreyas Gandhi, John-Paul Oliveria, Jorge Demaria, Armando J Lorenzo
OBJECTIVE: To compare pyeloplasty outcomes in children with and without "supra-normal" differential renal function (SNDRF) defined as >55% differential renal function (DRF) in children with ureteropelvic junction obstruction. METHODS: Our prospectively collected pyeloplasty database (2008-2015) was reviewed (n = 151). A total of 140/151 (93%) patients had preoperative renograms and 26/140 (19%) were found to have SNDRF (DRF ≥ 55%). Of 151 patients, 51 (34%) had pre- and postoperative renograms allowing determination of change ≥5% in function...
January 2017: Urology
M Rickard, L H Braga, J-P Oliveria, R Romao, J Demaria, A J Lorenzo
INTRODUCTION: Renograms are frequently obtained post-pyeloplasty in patients with residual hydronephrosis to confirm adequate drainage. Recent evidence suggests that percent improvement in antero-posterior diameter (PI-APD) ≥38 is predictive of success. We sought to further explore PI-APD ranges that would allow identification of patients who would benefit from ultrasound (US) monitoring alone vs. post-operative renal scan, and those more likely to develop recurrent ureteropelvic junction obstruction (rUPJO)...
August 2016: Journal of Pediatric Urology
Gopal Pathuri, Andria F Hedrick, Vibhudutta Awasthi, Benjamin D Cowley, Hariprasad Gali
Ortho-[(131)I]iodohippurate [(131)I]OIH (marketed as Hippuran I 131), a gold standard for radionuclide renography, and [(123)I]OIH were in clinical use for decades. Here we radiolabeled OIH with (124)I (a positron emitter) to combine the desirable biological properties of OIH and to enable the use of positron emission tomography (PET) for renography. [(124)I]OIH was synthesized with a slight modification to a previously reported method for the kit preparation of [(123)I]OIH based on the Cu(II) catalyzed isotope-exchange reaction...
September 2016: Applied Radiation and Isotopes
María Fernández-Ibieta, Leonardo Nortes-Cano, María José Guirao-Piñera, Gerardo Zambudio-Carmona, Jose Ignacio Ruiz-Jiménez
INTRODUCTION: Long-term evolution of residual hydronephrosis after successful pyeloplasty is not common. In this report, we have studied new ultrasound parameters, and have investigated the frequency of residual hydronephrosis. We highlight alternative radiation-free monitoring of pediatric pyeloplasties with ultrasound alone. PATIENTS AND METHODS: Children who had undergone successful open Anderson-Hynes pyeloplasties in the period 2001-2010 were followed up. Exclusion criteria included non-clearly obstructed renography scans (tracer clearance half-time < 20 min), crossing vessels, failed pyeloplasty, bilateral disease, other renal concomitant anomaly, absence of ultrasound measurements, and loss to follow up (<1 year)...
August 2016: Journal of Pediatric Urology
Nathan Osbun, Jonathan S Ellison, Thomas S Lendvay
INTRODUCTION: Fibroepithelial polyps of the ureter are a rare cause of asymptomatic and symptomatic upper urinary tract obstruction in children. While these lesions can often be managed endoscopically, large or multifocal polyps may preclude such an approach. OBJECTIVE: We aim to describe our institutional experience with robot-assisted laparoscopic treatment of ureteral polyps and show that a robotic approach is an effective alternative for large or multifocal polyps...
August 2016: Journal of Endourology
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
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