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Ureter obstruction

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https://www.readbyqxmd.com/read/28816298/-multiple-endoscopy-for-the-treatment-of-upper-urinary-tract-calculi-following-ileal-conduit-a-case-report-and-literature-review
#1
B Wang, J F Ye, L Zhao, H Bi, J Lu, L L Ma
Upper urinary tract calculi with infection is a quite difficult acute urologic emergency. And what is more, upper urinary tract obstruction after radical cystectomy following urinary diversion may be fatal in the vulnerable patients with this kind of situation. Postoperative anatomy and other factors affect the upper urinary tract calculi, and urinary tract infection greatly increased the risk. But it is particularly difficult to handle with patients with poor general condition and septic shock treatment, so how to optimize the selection program is worth further studying...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28816278/-analysis-of-development-safety-and-efficacy-of-percutaneous-nephrolithotomy-for-management-of-upper-urinary-tract-calculi-in-pediatric-patients
#2
L P Yu, T Xu
OBJECTIVE: To evaluate the development, safety and efficacy of percutaneous nephrolithotomy(PNL) for management of upper urinary tract calculi in pediatric patients. METHODS: In the study, 77 pediatric patients undergoing 87 PNLs through mini or standard tract for upper urinary tract calculi between January 2005 and December 2016 in Peking University People's hospital were reviewed, including 69 renal calculi, 6 upper ureteral calculi, 12 renal and upper ureteral calculi, 35 single calculi, 43 multiple calculi and 9 staghorn calculi...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28815168/retro-ureteral-small-bowel-herniation-after-radical-cystectomy
#3
Abbey L Cole-Clark, Dane W Cole-Clark, Matthew Winter, Venu Chalasani, Philip Bergersen
Small bowel obstruction caused by internal herniation under ureteric bands is a rare occurrence. Only 6 previous cases have been documented. This case report reviews the case of a 79-year-old male who presented to emergency with abdominal pain requiring subsequent laparotomy and release of internal herniation of bowel under ureter.
November 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28810600/ethanol-extract-of-gardenia-fruit-alleviates-renal-interstitial-fibrosis-induced-by-unilateral-ureteral-obstruction-in-rats
#4
Xiaobo Li, Min Ma, Xianggui Zhang, Liang Deng, Yarong Wang, Zhuang Bian, Shining Cai, Bangya Peng, Jiangquan Yang, Yang Chen
Gardenia fruit has been used in traditional Chinese medicine for thousands of years. A previous study by the present authors indicated that the ethanol extract of gardenia fruits (EEG) primarily contains eight constituents. In the present study, the potential effects of EEG on unilateral ureteral obstruction (UUO)-induced renal interstitial fibrosis were observed in rats. A total of 30 rats were randomly divided into three groups (n=10 each): Sham group, UUO group, and EEG group, which were administered with EEG (200 mg/kg/day) or the same volume of distilled water as a vehicle...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28807809/paraureteral-endometriosis-with-bilateral-gross-hydroureters-and-left-renal-compromise
#5
Arnaud Wattiez, Razan Nasir
Deep endometriosis is usually defined as endometriosis infiltrating the peritoneum by >5 mm. It sometimes involves the ureter causing hydronephrosis in 5% of cases. The latter is associated with 18% ureteral lesions. Ureteral endometriosis is one of the rare causes of silent Kidney failure. The ureter obstruction can lead to urinary tract obstruction, hydronephrosis and hydroureters. The ureters are usually compressed externally by the endometriotic lesions surrounding it causing extrinsic ureteral endometriosis, and sometimes by pressure from the bulky adenomyotic uterus with paraureteral fibrosis...
August 11, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28802719/tandem-ureteral-stents-in-the-management-of-double-j-stent-dysfunction-in-gynecological-malignancies
#6
U Ozyer, A Dirim
PURPOSE: The goal of this study was to determine the efficacy and safety of tandem ureteral stent placement in the management of malignant ureteral obstruction (MUO) refractory to single ureteral double-J stent drainage in women with gynecological malignancies. MATERIALS AND METHODS: A retrospective study was performed on 14 women (mean age, 54.5±9.6 [SD] years; range: 38-70 years) who had tandem stent placement following failed single ureteral double-J stent placement from 2012 to 2017...
August 9, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28798248/giant-hydronephrosis-in-a-case-of-ureterocele-with-duplex-system-an-entity-yet-not-reported
#7
Ruchir Aeron, Ashok Kumar Sokhal, Manoj Kumar, Satyanarayan Sankhwar
Ureterocele, which is a cystic dilatation of the terminal ureter, is usually associated with the upper moiety in a case of the duplex system. Giant hydronephrosis, a rare entity, is usually due to pelviureteric junction obstruction and is usually diagnosed in infants and children. We report a unique case of a unilateral complete duplex system with ureterocele with giant hydronephrosis of the upper moiety in an adult woman presenting as an abdominal lump. To the best of our knowledge, this is the first case of giant hydronephrosis associated with ureterocele in an adult patient...
August 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28774588/percutaneous-nephrostomy-placement-in-infants-and-young-children
#8
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/28762684/-the-retroperitoneal-space
#9
Andrea Mancini, Mario Meola, Giuseppe Tarantino, Ilaria Petrucci, Giovanna Berardi, Cristoforo Cuzzola
We describe the case of a 45-year-old woman with a clinical history of breast cancer presenting with anuric renal failure, metabolic acidosis and bilateral grade 2-3 hydronephrosis. Following insertion of bilateral ureteral stents, urinary output was 5000 ml in the subsequent 24 hours with frankly bloody urine, after which anuria recurred. A new ultrasound examination showed hydronephrotic kidneys with properly positioned stents, a distended bladder free of clots and a hypo-anechoic, well-demarcated mass enveloping the aorta...
August 1, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28762369/variable-presentation-of-retrocaval-ureter-report-of-four-cases-and-review-of-literature
#10
Muhammed Ahmed, Abdullahi Alhassan, Muhammad Abubakar Sadiq, Ahmad Tijjani Lawal, Ahmad Bello, Hussaini Yusuf Maitama
Retrocaval ureter is a rare anomaly in which the ureter passes behind the inferior vena cava due to abnormal embryogenesis. Very few cases have been reported from Africa. Although the anomaly is congenital, patients become symptomatic in the third or fourth decade of life. We reviewed the records of four patients with the diagnosis of retrocaval ureter and managed in our centre between January 2010 and December 2016. Three patients presented with recurrent colicky right flank pain while one was asymptomatic...
April 2017: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28757241/robotic-salvage-pyeloplasty-with-buccal-mucosal-onlay-graft-video-demonstration-of-technique-and-outcomes
#11
Anna Zampini, Ryan Nelson, Jj Haijing Zhang, Jeremy Reese, Kenneth Angermeier, Georges-Pascal Haber
OBJECTIVE To present the use of buccal mucosal graft (BMG) in a salvage robotic laparoscopic pyeloplasty as an alternative in the management of recurrent UPJ obstruction. METHODS We present two patients with recurrent UPJ obstruction who had previously undergone two prior open or robotic pyleoplasties, followed by endoscopic management. Preoperative imaging was obtained prior to surgical repair. The UPJ was incised and the incision extended to reveal margins of healthy normal caliber ureteral tissue. Single buccal mucosal graft were harvested from the inner cheek of each patient...
July 27, 2017: Urology
https://www.readbyqxmd.com/read/28756611/expression-of-%C3%AE-adrenergic-receptor-subtypes-in-human-normal-and-dilated-ureter
#12
Hailin Shen, Zhipeng Chen, Al-Dhabi Mokhtar, Xiaojun Bi, Guolin Wu, Shide Gong, Chuanyang Huang, Shuai Li, Shuqi Du
BACKGROUND: Ureter peristalsis is a basic physiological function regulated by myogenic and neurogenic factors. The distribution and function of β-adrenergic receptors (β-AR) in the human ureter remain unknown. The aim of this study was to investigate the expression of β-AR subtypes in the normal and dilated human ureter. METHODS: The upper, middle, and lower segments of normal and dilated ureters were collected from patients undergoing surgery for carcinoma of the kidney and upper urinary tract and ureteral stenosis...
July 29, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28754280/-prenatal-diagnosis-and-management-of-two-cases-of-bilateral-ureteroceles-on-simplex-ureters
#13
H Ben Hamouda, H Bouchahda, S Ghanmi, S Wannes, H Soua, H Hamza, M Belghith, A Nouri, M T Sfar
Ureterocele is a rare urologic disorder characterized by pseudocystic dilatation of the terminal submucosal ureter. Most cases of ureteroceles are associated with complete ureteral duplicity and ureterohydronephrosis, whereas ureteroceles on simplex ureters are rarer. The authors report two cases of bilateral ureteroceles on simplex ureters diagnosed prenatally at 30 and 32weeks gestation. Fetal ultrasound had revealed bilateral ureterohydronephrosis. The delivery was made at term and renal function was normal at birth...
July 25, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28749262/mycobacterium-intracellulare-infection-causing-a-retroperitoneal-mass-in-a-binturong-arctictis-binturong
#14
Laura Adamovicz, Suzanne Kennedy-Stoskopf, Ashley Talley, John M Cullen, Eli B Cohen, Petra Bizikova, Vanessa Grunkemeyer
A 19-yr-old castrated male binturong ( Arctictis binturong ) with a history of recurrent pyogranulomatous panniculitis, lymphangitis, and dermatitis was presented for evaluation of hyporexia and tenesmus. A large caudal abdominal mass was palpated on physical examination. On ultrasound, the mass encircled and obstructed the left ureter, resulting in hydroureter and hydronephrosis. The animal was euthanized, and necropsy revealed a large retroperitoneal pyogranuloma with acid-fast organisms identified in both the mass and the perineal skin...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28743527/effectiveness-and-complications-of-augmentation-cystoplasty-with-or-without-non-refluxing-ureteral-reimplantation-in-adult-patients-with-long-standing-bladder-dysfunction-a-single-center-11-year-experience-in-173-cases
#15
Zhaoxia Wang, Limin Liao
PURPOSE: To review our experience for effectiveness and complications of augmentation cystoplasty (AC) with or without non-refluxing ureteral reimplantation in adult patients with long-standing bladder dysfunction MATERIAL AND METHODS: We retrospectively reviewed 173 patients who underwent AC with or without ureteral re-implantation (UR) at our center from July 2005 to July 2016. Clinical data, magnetic resonance urography (MRU), and video-urodynamics (VUD) parameters were collected. The upper urinary tract dilation (UUTD) and vesicoureteral reflux (VUR) grading systems were used to evaluate upper urinary tract function...
July 22, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28736875/assessment-of-unilateral-ureter-obstruction-with-multi-parametric-mri
#16
Feng Wang, Keiko Takahashi, Hua Li, Zhongliang Zu, Ke Li, Junzhong Xu, Raymond C Harris, Takamune Takahashi, John C Gore
PURPOSE: Quantitative multi-parametric MRI (mpMRI) methods may allow the assessment of renal injury and function in a sensitive and objective manner. This study aimed to evaluate an array of MRI methods that exploit endogenous contrasts including relaxation rates, pool size ratio (PSR) derived from quantitative magnetization transfer (qMT), chemical exchange saturation transfer (CEST), nuclear Overhauser enhancement (NOE), and apparent diffusion coefficient (ADC) for their sensitivity and specificity in detecting abnormal features associated with kidney disease in a murine model of unilateral ureter obstruction (UUO)...
July 24, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28713267/epoxyeicosatrienoic-acid-analog-decreases-renal-fibrosis-by-reducing-epithelial-to-mesenchymal-transition
#17
Melissa Skibba, Md Abdul Hye Khan, Lauren L Kolb, Michael M Yeboah, John R Falck, Radhika Amaradhi, John D Imig
Renal fibrosis, which is a critical pathophysiological event in chronic kidney diseases, is associated with renal epithelial-to-mesenchymal transition (EMT). Epoxyeicosatrienoic acids (EETs) are Cyp epoxygenase arachidonic acid metabolites that demonstrate biological actions that result in kidney protection. Herein, we investigated the ability of 14,15-EET and its synthetic analog, EET-A, to reduce kidney fibrosis induced by unilateral ureter obstruction (UUO). C57/BL6 male mice underwent sham or UUO surgical procedures and were treated with 14,15-EET or EET-A in osmotic pump (i...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28694567/immunohistochemistry-in-ureteropelvic-junction-obstruction-and-its-correlation-to-postoperative-outcome
#18
Anusiri Inugala, Ramesh Kota Reddy, Bhuvaneshwar Nadipalli Rao, Sreenivas P Reddy, Radhika Othuluru, Lavanya Kanniyan, Nagarjuna Kumbha, Srinivas Srirampur
AIM: To investigate the correlation between the status of interstitial cells of Cajal (ICC) in ureteropelvic junction (UPJ) and the resected ureteric margin and the postoperative outcome of Anderson-Hynes pyeloplasty in UPJ obstruction (UPJO) and to compare the ICC in the UPJ and the resected margin of the normal ureter. MATERIALS AND METHODS: An observational study was conducted over a period of 2 years at the Department of Pediatric Surgery at Niloufer Institute of Women and Child Health...
July 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28693464/polypoid-arteriovenous-malformation-of-the-ureter-mimicking-a-fibroepithelial-polyp-a-case-report
#19
C S Ten Donkelaar, A C Houwert, F J W Ten Kate, M T W T Lock
BACKGROUND: Arteriovenous malformations (AVM) of the urinary tract are extremely rare. To the best of our knowledge, only three case of AVM of the ureter have been described in the literature so far. CASE PRESENTATION: We present an additional, fourth case of an AVM of the ureter, clinically presented as asymptomatic haematuria and an obstructive process in the left ureter. Ureteroscopic evaluation revealed a fibroepithelial polypoid-like lesion in the proximal ureter...
July 10, 2017: BMC Urology
https://www.readbyqxmd.com/read/28683770/laparoscopic-ureterocalicostomy-for-ureteropelvic-junction-obstruction-in-a-10-year-old-female-patient-a-case-report
#20
Yoko Nishimura, Kimihiko Moriya, Michiko Nakamura, Takeya Kitta, Yukiko Kanno, Hiroki Chiba, Masafumi Kon, Nobuo Shinohara
BACKGROUND: Ureterocalicostomy is indicated mainly in cases with failed pyeloplasty or with a completely intrarenal pelvis. While there have been several case series reported in adults, laparoscopic ureterocalicostomy in pediatric cases has rarely been reported. We report a case of pure laparoscopic ureterocalicostomy for ureteropelvic junction obstruction in an Asian female child. CASE PRESENTATION: A 10-year-old female patient was referred to our hospital due to right high-grade hydronephrosis and a right renal stone, which was detected due to hematuria...
July 6, 2017: BMC Research Notes
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