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Ureteral duplication

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https://www.readbyqxmd.com/read/29048226/effect-of-laser-settings-and-irrigation-rates-on-ureteral-temperature-during-holmium-laser-lithotripsy-an-in-vitro-model
#1
Daniel Arthur Wollin, Evan Clayton Carlos, Westin Tom, W Neal Simmons, Glenn M Preminger, Michael Eric Lipkin
PURPOSE: Ureteroscopic laser lithotripsy requires irrigation for adequate visualization and temperature control during treatment of ureteral stones. However, there is little data on how different irrigation and laser settings affect the ureteral wall and surrounding tissues. This effect has become an important consideration with the advent of high-powered lasers. We therefore evaluated the effect of laser settings and irrigation flow on ureteral temperature in an in vitro setting. MATERIALS AND METHODS: To mimic ureteroscopic laser lithotripsy, we simulated clinically relevant irrigation flow rates and fired a Ho:YAG laser while monitoring "intraureteral" temperature...
October 19, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28894842/retroperitoneal-actinomycosis-a-rare-sequela-of-an-infected-obstructing-ureteral-stone
#2
Elizabeth Bearrick, Colby A Dixon, Joshua Rhein, Michael S Borofsky
Background: Actinomycosis is a condition in which Actinomyces, a normal component of the oral and gastrointenstial flora, becomes pathogenic in the setting of damaged tissue, leading to widespread tissue destruction across fascial planes. Prior literature describing this condition is rare, particularly cases involving the retroperitoneum. In this study, we report a case of retroperitoneal actinomycosis caused by an infected, obstructing ureteral stone. Case Presentation: A 48-year-old woman with a history of substance abuse, malnutrition, and gastric bypass presented to the emergency room with a 3-week history of abdominal pain and fevers...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28770138/anterior-urethral-valve-uncommon-association-with-renal-duplicity
#3
Amina Ben Salem, Ines Mazhoud, Rachida Laamiri, Randa Salem, Hayet Laajili, Lassaad Sahnoun, Chiraz Hafsa
Anterior urethral valves (AUVs) is an unusual cause of congenital obstruction of the male urethra, being 15-30 times less common than posterior urethral valves. We present a case of AUV diagnosed at 24th gestational week. Ultrasonography and fetal MRI revealed hydronephrotic kidneys with ureteral duplicity, a distended bladder and perineal cystic mass which confirmed dilated anterior urethra in a male fetus. Diagnosis was confirmed postnatally by voiding cystourethrogram and surgery.
April 2017: Journal of Neonatal Surgery
https://www.readbyqxmd.com/read/28754280/-prenatal-diagnosis-and-management-of-two-cases-of-bilateral-ureteroceles-on-simplex-ureters
#4
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/28724605/heterozygous-loss-of-function-mutation-in-odd-skipped-related-1-osr1-is-associated-with-vesico-ureteric-reflux-duplex-systems-and-hydronephrosis
#5
Marie-Lyne Fillion, Jasmine El Andalousi, Fatima Tokhmafshan, Vasikar Murugapoopathy, Christine L Watt, Inga J Murawski, John-Paul Capolicchio, Mohamed El-Sherbiny, Roman Jednak, Indra Rani Gupta
Osr1 is a transcriptional repressor that plays critical roles in maintaining the mesenchymal stem cell population within the developing kidney. Here, we report that newborn pups with a heterozygous null mutation in Osr1 exhibit a 21% incidence of vesico-ureteric reflux and have hydronephrosis and urinary tract duplications. Newborn pups have a short intravesical ureter resulting in a less competent uretero-vesical junction which arises from a delay in urinary tract development. We describe a new domain of Osr1 expression in the ureteral mesenchyme and within the developing bladder in the mouse...
July 19, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28302252/bilateral-ureteral-duplication-of-complete-left-and-incomplete-right-side-with-lower-pole-kidney-stone
#6
Selahattin Caliskan
Bilateral ureteral duplication is a very rare anomaly, a result of two separate ureteric buds arising from a mesonephric duct. Most of the patients are asymptomatic and diagnosed incidentally. Recurrent urinary tract infections, incontinence, haematuria, stone formation and flank pain are common clinical symptoms. Intravenous urography, computed tomography urography, and magnetic resonance imaging are the diagnostic modalities. In this report, a case of bilateral ureteral duplication with stone formation in the lower pole of the right kidney is presented along with its management...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28247718/-technical-features-of-uretral-intestinoplasty-part-3-laparoscopic-ileo-and-appendiceal-ureteroplasty
#7
B K Komyakov, B G Guliev, V A Ochelenko
PURPOSE: Presentation of the results and the technical features of the laparoscopic intestinal and appendicular ureteroplasty. MATERIALS AND METHODS: From 2001 to 2015, intestinal and appendicular ureteroplasty was performed in 103 patients. ileum was used for the replacement of ureteral defects in 78 (75.7%) patients, appendix - in 21 (20.4%), and colon - in 4 (3.9%). In 10 (9.7%) cases, the surgery was performed laparoscopically. Among them, 7 patients underwent ileoureteroplasty (6 - laparoscopic ileoureterocystoanastomosis, 1 - right-sided laparoscopic ileoureterocystoanastomosis by Yang-Monti) and 3 patients underwent appendiceal ureteroplasty...
August 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28247653/-technical-features-of-intestinal-ureteroplasty-part-1-left-sided-ileoureteroplasty
#8
B K Komyakov
AIM: To examine the results of intestinal ureteroplasty and present the technical features of left-sided ileoureteroplasty. MATERIAL AND METHODS: From 2001 to 2015, 78 patients underwent isolated substitutions of the ureter using a segment of the ileum, including 57 (73.1%) one-sided and 21 (26.9%), two-sided. One patient underwent concurrent left ileoureterocystoplasty and right appendicular ureterocystoplasty. In two observations of duplicated ureter Wallace-type ileoureterocystoplasty was carried out...
April 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28167691/robotic-partial-nephrectomy-for-duplex-kidney-with-ectopic-ureter-draining-in-the-vagina-in-an-adult-patient-with-urinary-incontinence
#9
Humza Mahmood, Marios Hadjipavlou, Raj Das, Chris Anderson
A duplex kidney system with an ectopic ureter draining into the vagina is a congenital malformation that typically presents as refractory urinary incontinence. Diagnosis is often difficult to establish and delayed due to a low incidence. We present the case of a patient aged 26 years with a life-long history of persistent urinary incontinence. Initial presentation was at childhood; however, the diagnosis went undetermined for 22 years. CT urography revealed a duplex kidney with an atrophic upper pole associated with an ectopic ureter that drained into the vaginal vault...
February 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28149748/extravasation-of-urine-associated-with-bilateral-complete-ureteral-duplication-vesicoureteral-reflux-and-benign-prostatic-hyperplasia
#10
Issei Suzuki, Kanya Kaga, Kohei Takei, Yuumi Tokura, Kazumasa Sakamoto, Daisaku Nishihara, Tomoya Mizuno, Hideo Yuki, Hironori Betsunoh, Hideyuki Abe, Masahiro Yashi, Yoshitatsu Fukabori, Tomonori Yamanishi, Takao Kamai
We report a rare case of extravasation of urine, which may be associated with bilateral complete ureteral duplication, vesicoureteral reflux (VUR), and benign prostatic hyperplasia (BPH). A 71-year-old male presented with a complaint of right abdominal pain. An extravasation of urine was noted, and was improved by indwelling urethral catheterization. Transurethral resection of the prostate and the endoscopic subureteral injection of dextanomer/hyaluronic acid were performed for the treatment of BPH and VUR, respectively...
February 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28010137/hydronephrosis-with-ureteritis-developed-in-c57bl-6n-mice-carrying-the-congenic-region-derived-from-mrl-mpj-type-chromosome-11
#11
Osamu Ichii, Masataka Chihara, Shin-Hyo Lee, Teppei Nakamura, Saori Otsuka-Kanazawa, Taro Horino, Yaser Hosny Ali Elewa, Yasuhiro Kon
Inbred MRL/MpJ mice show several unique phenotypes in tissue regeneration processes and the urogenital and immune systems. Clarifying the genetic and molecular bases of these phenotypes requires the analysis of their genetic susceptibility locus. Herein, hydronephrosis development was incidentally observed in MRL/MpJ-derived chromosome 11 (D11Mit21-212)-carrying C57BL/6N-based congenic mice, which developed bilateral or unilateral hydronephrosis in both males and females with 23.5% and 12.5% prevalence, respectively...
December 23, 2016: Autoimmunity
https://www.readbyqxmd.com/read/27896134/robot-assisted-pyeloureterostomy-in-bifid-renal-pelvis-with-ureteropelvic-junction-obstruction-of-the-lower-moiety
#12
Mario Lima, Michela Maffi, Niel Di Salvo, Tommaso Gargano, Michele Libri, Giovanni Ruggeri
Duplications of the urinary collecting system and pyelo-ureteral junction obstruction (PUJO) are common, but the simultaneous presence of both anomalies is rarely encountered. In incomplete duplicated systems, PUJO usually affects the lower moiety. We present the case of a 5-year old boy with left bifid renal pelvis and hydronephosis of the lower moiety treated by robot-assisted pyeloureterostomy.
January 2017: Urology Case Reports
https://www.readbyqxmd.com/read/27868099/endourologic-and-open-ureterolithotomy-and-common-sheath-reimplant-for-large-bladder-and-distal-ureteral-calculi
#13
Madeline Cancian, Joseph Brito, Joseph Renzulli, Gyan Pareek
A twenty-eight-year-old female with a history of suprapubic pain and recurrent urinary tract infections presents for urology referral with a kidney, ureter, and bladder radiograph showing a 4.4 cm bladder calculus and 6.5 cm distal left ureteral stone. She underwent effective cystolitholapaxy of the bladder stone. Endourologic attempt (left ureteroscopy) was unsuccessful because of ureteral stone burden. Findings at ureteroscopy revealed a duplicated system on the left with the lower pole moiety joining just proximal to the ureteral orifice...
2016: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/27843215/extravesical-modified-gregoir-lich-versus-intravesical-cohen-s-ureteric-reimplantation-for-vesicoureteral-reflux-in-children-a-single-center-experience
#14
Krishnamoorthy Sriram, Ramesh Babu
INTRODUCTION: There are multiple techniques for surgical correction of vesicoureteral reflux (VUR). We compared the outcomes of extravesical versus Cohen's reimplantation for VUR in children. METHODS: Records of all children (n = 118) who underwent reimplantation for VUR between 2003 and 2014 were analyzed (male: female = 43:75). Children with secondary VUR, duplication anomalies, and ectopic ureter were excluded from our study. Extravesical reimplantation (EVR) was performed bilateral in 32 children (Group 1a) and unilateral in 19 (Group 1b), while bilateral Cohen's reimplantation was performed in 67 (Group 2)...
October 2016: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/27747162/persistent-urinary-incontinence-after-nephrectomy-a-case-of-inverted-y-ureteral-duplication-with-ectopic-ureteral-insertion-into-the-vagina
#15
Hiroshi Shimura, Takahiko Mitsui, Tadashi Aoki, Manabu Kamiyama, Takashi Yamagishi, Masayuki Takeda
Inverted-Y ureteral duplication is one of the rarest anomalies of ureteral branching. We encountered a 20-year-old female patient with persistent incontinence even after nephrectomy for ectopic ureteral insertion into the vagina. She had inverted-Y ureteral duplication between the bladder and vagina, and urine was being transported from the bladder to the vagina. To the best of our knowledge, this is a rare case of inverted-Y ureteral duplication with ectopic ureteral insertion into the vagina as well as the ureter into the bladder, which became apparent due to persistent urinary incontinence even after nephrectomy...
November 2016: Urology Case Reports
https://www.readbyqxmd.com/read/27659383/unusual-variant-of-inverted-y-ureteral-duplication-with-an-ipsilateral-seminal-vesicle-cyst-and-renal-dysgenesis
#16
F Hajji, N Hammoune, M Miloudi, S Belasri
Inverted Y malformation is a rare variant of ureteral duplication with a marked female predominance. We describe a case of inverted Y ureteral duplication with concurrent ectopic ureteral insertion into a seminal vesicle cyst, a ureterocoele and renal dysgenesis, which occurred in a 29-year-old man with lower urinary tract symptoms, haematospermia and postcoital discomfort. To our knowledge, this is the first reported case with this constellation of urogenital abnormalities.
January 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/27567749/ectopic-insertion-of-a-duplicated-ureter-into%C3%A2-prostatic-urethra-demonstration-by%C3%A2-3d%C3%A2-multi-detector-computed-tomography-urography
#17
Jun Deng, Xiongbing Lu, Ying Liu
Ectopic insertion of the ureter in the genitourinary tract is a rare congenital disorder, usually associated with ureteral duplication. Identification of the insertion open is critical for ureteric re-implantation. However, the challenge in the diagnosis of ectopic insertion of the ureter usually is to identify its insertion, particularly when the affected ureter is not dilated. Multi-detector computed tomography (MDCT) urography with nonionic iodinated contrast media delineates the ureteric course in the normal functioning kidney in the excretory phase [1]...
October 6, 2016: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/27542552/innovation-in-robotics-and-pediatric-urology-robotic-ureteroureterostomy-for-duplex-systems-with-ureteral-ectopia
#18
Michael J Biles, Julia B Finkelstein, Mark V Silva, Sarah M Lambert, Pasquale Casale
INTRODUCTION: Robotic technology has been increasingly utilized for complicated reconstructive surgeries in pediatric urology, such as ureteroureterostomy (UU). The literature is limited regarding the performance of minimally invasive UU in children, and the existing published series utilize indwelling ureteral stents. We sought to report on our pediatric experience with robot-assisted laparoscopic (RAL)-UU using a temporary ureteral catheter in duplex systems with ureteral ectopia. METHODS: A retrospective chart review was performed of all pediatric patients who underwent RAL-UU at a single institution over a 2-year period...
October 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27349780/complete-ureteral-duplication-outcome-of-different-surgical-approaches
#19
Isabel Rodrigues, José Estevão-Costa, Ana Catarina Fragoso
INTRODUCTION: The surgical management of complete ureteral duplication anomalies is not consensual. OBJECTIVE: To characterize the pediatric population who underwent surgery for complete ureteral duplication and assess the outcomes of different approaches. MATERIAL AND METHODS: Clinical records from patients treated between January 2008 and June 2014 were retrospectively reviewed. Epidemiology, diagnosis, clinical manifestations and surgical procedures were collected and analysed...
April 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27290614/urinary-tract-infections-in-children-with-prenatal-hydronephrosis-a-risk-assessment-from-the-society-for-fetal-urology-hydronephrosis-registry
#20
MULTICENTER STUDY
Rebecca S Zee, Katherine W Herbst, Christina Kim, Patrick H McKenna, Tom Bentley, Christopher S Cooper, C D Anthony Herndon
INTRODUCTION: Risk factors for urinary tract infection (UTI) in children with prenatal hydronephrosis (PNH) are not clearly defined. Our study aim was to describe incidence and identify factors associated with UTI among a cohort of children diagnosed with PNH. MATERIAL AND METHODS: Patients with confirmed PNH from four medical centers were prospectively enrolled in the Society for Fetal Urology (SFU) hydronephrosis registry between 9/2008 and 10/2015. Exclusion criteria included enrollment because of UTI, associated congenital anomalies, and less than 1-month follow-up...
August 2016: Journal of Pediatric Urology
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