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Ureter obstruction

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https://www.readbyqxmd.com/read/28320713/antimicrobial-percutaneous-nephrostomy-catheters-for-the-prevention-of-renal-infections-in-vitro-studies
#1
Nylev Vargas-Cruz, Ruth A Reitzel, Joel Rosenblatt, Mohamed Jamal, Ariel D Szvalb, Anne-Marie Chaftari, Ray Hachem, Issam Raad
Purpose - Percutaneous nephrostomy (PCN) catheters are the primary method for draining ureters obstructed by malignancy and preventing a decline of the renal function. However, PCN-related infections such as pyelonephritis and urosepsis remain a significant concern. Currently no antimicrobial PCNs are available for preventing infectious complications. Vascular catheters impregnated with Minocycline/Rifampin (M/R) and M/R with Chlorhexidine coating (M/R+CHD) have previously demonstrated antimicrobial activity...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28306195/influence-of-caudal-block-on-postoperative-oliguria-in-infants-undergoing-bilateral-ureteroneocystostomy-a-retrospective-analysis
#2
Hyun Jeong Lee, Yong Seon Choi, Bon-Nyeo Koo, Sang Won Han, Young Eun Cho, Young Jae Im, Jae Hoon Lee
BACKGROUND: Caudal block has been widely used in children undergoing genitourinary surgery. However, the influence of caudal block on postoperative oliguria is unclear. AIM: The aim of this study was to assess the effect of caudal block on urinary flow through the reimplanted ureter after ureteroneocystostomy and the incidence of postoperative oliguria in infants. METHODS: This retrospective study analyzed the medical records of 121 infants aged less than 12 months who underwent bilateral ureteroneocystostomy for vesicoureteral reflux at a tertiary medical center...
March 17, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28299237/asymptomatic-urolithiasis-complicated-by-nephrocutaneous-fistula
#3
Marion Hamard, Gaël Amzalag, Christoph D Becker, Pierre-Alexandre Poletti
Asymptomatic spontaneous nephrocutaneous fistula is a rare and severe complication of chronic urolithiasis. We report a case of 56-year-old woman with a nephrocutaneous fistula (NFC) which developed from a superinfected urinoma following calyceal rupture due to an obstructing calculus in the left ureter. The patient was clinically asymptomatic and came to the emergency department for a painless left flank fluctuating mass. This urinoma was superinfected, with a delayed development of renal abscesses and perirenal phlegmon found on contrast-enhanced uro-computed tomography (CT), responsible for left renal vein thrombophlebitis and left psoas abscess...
2017: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/28292311/sonography-of-the-distal-urethra-in-lambs
#4
Ammar AlLugami, Kerstin von Pückler, Axel Wehrend, Marlene Sickinger
Sonography is a convenient, non-invasive diagnostic modality in small ruminants, often used in reproductive management, internal medicine, and surgery. Pregnancy diagnostics and imaging anatomy and pathology of organs, such as neoplasia, are major applications. Urolithiasis is one of the most common causes of death in male sheep and goats, for which sonography is the diagnostic modality of choice. Although ultrasound-imaging techniques for kidneys, ureters, and urinary bladder in small ruminants have been described previously, this study focuses on reporting the imaging technique of the extra-pelvic portion of the urethra, as nearly all the cases of obstructive urolithiasis result from urinary stones in this part...
March 14, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28292198/prospective-analysis-of-a-complete-retrograde-ureteroscopic-technique-with-holmium-laser-stent-cutting-for-management-of-encrusted-ureteral-stents
#5
Alexandre Thomas, Jonathan Cloutier, Luca Villa, Julien Letendre, Achilles Ploumidis, Olivier Traxer
PURPOSE: To propose and evaluate a new endoscopic technique using only a retrograde ureteroscopic approach for the removal of heavily encrusted ureteral stents. METHODS: Data from 51 consecutive patients with encrusted and retained ureteral stents were prospectively collected. Description of the successive steps of surgery is detailed. The Holmium-YAG laser properties offer the opportunity for fragmentation of stent-attached encrustation and the ability to cut the stent itself...
March 14, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28275027/ureteral-inguinal-hernia-an-uncommon-trap-for-general-surgeons
#6
Zarif Yahya, Yahya Al-Habbal, Sayed Hassen
Inguinal hernias involving the ureter, a retroperitoneal structure, is an uncommon phenomenon. It can occur with or without obstructive uropathy, the latter posing a trap for the unassuming general surgeon performing a routine inguinal hernia repair. Ureteral inguinal hernia should be included as a differential when a clinical inguinal hernia is diagnosed concurrently with unexplained hydronephrosis, renal failure or urinary tract infection particularly in a male. The present case describes a patient with a known ureteroinguinal hernia who proceeded to having a planned hernia repair and ureteric protection...
March 8, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28248040/-technical-features-of-intestinal-ureteroplasty-part-5-bilateral-ureteroplasty
#7
B K Komyakov, V A Ochelenko, T Kh Al-Attar, A Kh Gaziev
AIM: To present the results and the technical features of the various methods of bilateral ileal ureteroplasty. MATERIALS AND METHODS: From 2001 to 2016, 154 patients (mean age 52+/-9.2 years) underwent ileal and appendicular substitution of the ureter and urinary bladder. Study participants comprised 70 (45.4%) men and 84 (54.6%) women. All patients underwent comprehensive examination, including ultrasound, X-ray, radioisotope and endoscopic tests. Bilateral isolated ileal ureteroplasty was performed in 20 patients (40 substituted ureters) whereof in 14, 5 and 1 cases U-shaped, 7-shaped and two separate grafts were used, respectively...
December 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28245541/-one-step-laparoscopic-surgery-for-two-regions-pelvi-ureteric-junction-obstruction-and-mid-ureteral-obstruction-due-to-umbilical-ligament
#8
Yutaro Sasaki, Keito Shiozaki, Kazuyoshi Izumi, Yasuo Kawanishi
The patient first presented with left flank pain at the age of 15. Computed tomography (CT) and ultrasonography performed at that time revealed left hydronephrosis and hydroureter. Mid-ureteral obstruction was suspected,and he underwent balloon catheter dilation of the mid-ureteral obstruction. Hydronephrosis,hydroureter and flank pain improved after surgery. However,at 21 years of age,he again presented with left flank pain. CT and ultrasonography revealed pelvi-ureteric junction obstruction and mid-ureteral obstruction...
January 2017: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/28237532/ureteral-reconstruction-with-ileum-long-term-follow-up-of-renal-function
#9
Joshua D Roth, M Francesca Monn, Konrad M Szymanski, Richard J Bihrle, Matthew J Mellon
OBJECTIVE: To assess long-term renal preservation and surgical outcomes in patients undergoing ureteric substitution with ileum. This has been a mainstay of reconstruction options for lengthy ureteral defects. METHODS: Consecutive patients aged 18 or older undergoing ileal ureters at our institution were retrospectively reviewed (1989-June 2013). Patients with <6 months of follow-up were excluded. Demographic, surgical and renal functional outcomes were reviewed...
February 22, 2017: Urology
https://www.readbyqxmd.com/read/28228400/inhibiting-aerobic-glycolysis-suppresses-renal-interstitial-fibroblasts-activation-and-renal-fibrosis
#10
Hao Ding, Lei Jiang, Jing Xu, Feng Bai, Yang Zhou, Qi Yuan, Jing Luo, Ke Zen, Junwei Yang
Chronic kidney diseases (CKD) generally lead to renal fibrosis. Despite great progresses have been made in identifying molecular mediators of fibrosis, the mechanism that governs renal fibrosis remains unclear and so far no effective therapeutic anti-fibrosis strategy is available. Here we demonstrated that a switch of metabolism from oxidative phosphorylation to aerobic glycolysis (Warburg effect) in renal fibroblasts was the primary feature of fibroblast activation during renal fibrosis, and that suppressing renal fibroblast aerobic glycolysis could significantly reduce renal fibrosis...
February 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28220579/long-term-results-of-ileal-ureteric-replacement-a-25-years-single-centre-experience
#11
Arkadius Kocot, Charis Kalogirou, Daniel Vergho, Hubertus Riedmiller
OBJECTIVES: To report the long-term outcome of ileal ureteric replacement (IUR) in complex reconstruction of the urinary tract. PATIENTS AND METHODS: From 1991 to 2016, IUR was performed in 157 patients with structural or functional ureteric loss. In 52 patients, bilateral IUR became necessary. Implantation sites where either the native urinary bladder (n=79) or intestinal reservoirs (n=78). In the latter group, the technique was used at the time of primary urinary diversion (n=34), in a secondary approach (n=29) and in undiversion or conversion procedures (n=15)...
February 20, 2017: BJU International
https://www.readbyqxmd.com/read/28216944/ureteric-erosion-and-obstruction-a-rare-but-dreaded-complication-of-intrauterine-contraceptive-device
#12
Vinod Priyadarshi, Nidhi Sehgal, Dipanwita Sen
Though intrauterine contraceptive device (IUCD) is a safe and most frequently used long-term contraceptive method, it has some complications. Uterine perforation and intra-abdominal migration have been reported often, but a retroperitoneal migration is exceptional. Here, we are reporting an IUCD which perforated the uterus and migrated to the retroperitoneum; impinging into and obstructing left ureter causing severe hydroureteronephrosis due to the development of the left lower ureteric stricture.
January 2017: Urology Annals
https://www.readbyqxmd.com/read/28216451/ureteric-obstruction-from-malignant-melanoma-in-both-right-double-moiety-and-left-single-moiety-ureters
#13
Brayden March, Ross John Spero Calopedos, Edward Latif, Rupert Ouyang
We report the first documented case of malignant melanoma obstructing ureters of both moieties of a duplex kidney and contralateral single moiety ureter in a 51-year-old male. The patient presented with fever, coryzal symptoms, and liver function test derangement several years after 2 superficial spreading melanomas were excised with clear margins. Ultrasonography demonstrated hydronephroureter in both moieties of a complete right-sided duplex kidney. Retrograde pyelograms showed bilateral hydronephroureter and filling defects in all 3 ureters...
February 16, 2017: Urology
https://www.readbyqxmd.com/read/28164035/proximal-ureteral-atresia-a-rare-congenital-anomaly-incidental-finding-a-case-report
#14
Cosimo Bleve, Maria Luisa Conighi, Lorella Fasoli, Valeria Bucci, Francesco Battaglino, Salvatore Fabio Chiarenza
Ureteral atresia is a rare disease usually associated with a non-functioning dysplastic kidney. The condition may be unilateral or bilateral; focal, short or long and may involve any part of the ureter. Association with other urinary anomalies is rare. We report the case of a 10-month-old boy with prenatal diagnosis of multicystic right kidney. This suspicion was confirmed after birth by ultrasound and static scintigraphy; a right vesicoureteral reflux (VUR) was recorded at cystography. The boy presented a regular renal function but was hospitalized twice for suspected pyelonephritis between the 8th and the 10th month of life and were recorded occasional mild changes in blood pressure...
January 2017: Translational pediatrics
https://www.readbyqxmd.com/read/28145916/hydronephrosis-presenting-6-months-after-sacral-colpopexy-case-report-and-literature-review
#15
Emily Weber LeBrun, Estefania Santamaria, Louis Moy
OBJECTIVES: The aim of this study was to describe a case of uterovaginal prolapse managed with robotic-assisted sacral colpopexy complicated by severe right-sided hydronephrosis despite normal intraoperative cystoscopy. METHODS: A 68-year-old woman presented with a worsening vaginal bulge over the past 2 years. Tricompartment stage 2 uterovaginal prolapse, with dominant cystocele and skin erosion at the posterior fourchette from prolapse friction, was identified on physical examination, and the patient underwent pelvic reconstructive surgery, including sacral colpopexy...
January 31, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28134406/-the-ormond-s-disease-an-intriguing-obstructive-nephrouropathy
#16
Rocco Manganelli, Serena Manganelli, Salvatore Iannaccone, Walter De Simone
Idiopathic retroperitoneal fibrosis also known as Ormonds disease is a rare disorder characterized by the development of fibrotic tissue in the retroperitoneum involving the abdominal aorta and iliac arteries, ureters and the inferior vena cava. The aberrant tissue may compress ureters leading to obstructive nephrouropathy and renal failure, which are the most common clinical manifestations of this condition. The nephrologist is often consulted to make differential diagnosis for acute renal failure and obstructive uropathy...
November 2016: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28092863/adipose-derived-stem-cells-ameliorate-renal-interstitial-fibrosis-through-inhibition-of-emt-and-inflammatory-response-via-tgf-%C3%AE-1-signaling-pathway
#17
Yan Song, Changliang Peng, Shasha Lv, Jing Cheng, Shanshan Liu, Qing Wen, Guangju Guan, Gang Liu
Adipose-derived stem cells (ADSCs) have been successfully used to treat acute kidney injury or acute renal failure. However, the effect of ADSCs on treating renal interstitial fibrosis remains unknown. Here, we assessed the therapeutic efficacy of ADSCs on renal interstitial fibrosis induced by unilateral ureter obstruction (UUO) and explored the potential mechanisms. After 7days of UUO, rats were injected with ADSCs (5×10(6)) or vehicle via tail vein. We found that ADSCs administration significantly ameliorated renal interstitial fibrosis, the occurrence of epithelial-mesenchymal transition (EMT) and inflammatory response...
January 13, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28073208/experience-of-percutaneous-access-under-ultrasound-guidance-in-renal-transplant-patients-with-allograft-lithiasis
#18
Silvano Palazzo, Ottavio Colamonico, Saverio Forte, Matteo Matera, Giuseppe Lucarelli, Pasquale Ditonno, Michele Battaglia, Pasquale Martino
OBJECTIVE: Urolithiasis of the transplanted kidney has an incidence of 0.2 to 1.7%, it increases the risk of infection in immunosuppressed patients and it can lead to ureteral obstruction that is often associated with deterioration of renal function. Urolithiasis of the transplanted kidney has different characteristics compared to the native kidney, due to the absence of innervation, which does not lead to colic pain. Percutaneous approach is an optimal choice in transplant patients. MATERIAL AND METHODS: Here we report our experience in two cadaveric transplant patients with urolithiasis...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28073190/different-patterns-of-pelvic-ureteral-endometriosis-what-is-the-best-treatment-results-of-a-retrospective-analysis
#19
Salvatore Butticè, Antonio Simone Laganà, Giuseppe Mucciardi, Francesco Marson, Tzevat Tefik, Christopher Netsch, Salvatore Giovanni Vitale, Emre Sener, Rosa Pappalardo, Carlo Magno
OBJECTIVE: Endometriosis is an estrogendependent disease. The incidence of urinary tract endometriosis (UE) increased during the last few years and, nowadays, it ranges from 0.3 to 12% of all women affected by the disease. The ureter is the second most common site affected. The ureteral endometriosis is classified in extrinsic and intrinsic. The aim of this study is to individuate the best treatments for each subset of ureteral endometriosis. MATERIALS AND METHODS: 32 patients diagnosed with surgically treated UE were retrospectively reviewed...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28062436/contralateral-inguinal-herniation-of-a-transplant-ureter-causing-obstructive-uropathy-in-a-renal-transplant-recipient
#20
Niyati Lobo, Fiona McCaig, Jonathon Olsburgh
Ipsilateral inguinal herniation of the transplanted ureter has been reported as a rare cause of obstructive uropathy in renal transplant recipients. A 73-year-old man presented with acute renal failure 29 years after receiving a deceased donor renal transplant. Radiological investigations demonstrated marked hydronephrosis of the left iliac fossa transplant kidney and herniation of the distal transplant ureter and bladder into the right inguinal canal. The patient underwent placement of a nephrostomy and antegrade stent followed by definitive hernia repair with return of graft function to baseline level...
January 6, 2017: BMJ Case Reports
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