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ureter stone

Min Soo Choo, Jun Hyun Han, Jong Keun Kim, Tae Young Shin, Won Ki Lee, Sang Kon Lee, Seong Ho Lee
PURPOSE: We compared the outcomes of SWL to treat distal ureter stones with regard to the conventional prone and supine positions using the transgluteal approach through the greater sciatic foramen. METHODS: A prospective, randomized, single-blind, and multicenter study was conducted between October 2014 and July 2015. The inclusion criteria were radio-opaque distal ureter stones with a maximum diameter of 0.5-2 cm as measured on a CT scan. The included 160 patients were randomly assigned to two groups: the prone group (n = 80; treated in the conventional prone position) and the transgluteal group (n = 80; treated in the supine position using a transgluteal approach)...
March 16, 2018: World Journal of Urology
Suoshi Jing, Bo Liu, Wengang Lan, Xin Zhao, Junsheng Bao, Junlin Ma, Zhimin Liu, Hongyan Liu, Tiejun Pan, Jianggen Yang, Dan Wu, Youli Zhao, Yuhan Wang, Zhiping Wang
OBJECTIVE: To investigate the effectiveness of modified mechanical percussion for eliminating upper urinary tract (UUT) stone fragments after extracorporeal shock wave lithotripsy (SWL). MATERIALS AND METHODS: We assigned patients aged 18-60 years with UUT calculi to the modified mechanical percussion (trial) or observation (control) group. Kidney-ureter-bladder radiography and ultrasound were used for diagnostic evaluation. The primary outcome was the stone-expulsion rate (SER) at 6 hours...
March 12, 2018: Urology
Omar N Atta, Hussein H Alhawari, Muayyad M Murshidi, Emad Tarawneh, Mujalli M Murshidi
INTRODUCTION: Ureterocele is a cystic dilatation of the lower part of the ureter. It is a congenital anomaly that is associated with other anomalies such as a duplicated system, and other diseases. It poses a great challenge owing to its numerous types and clinical presentations. Its incidence is 1 in every 4000 individuals. One of its presentations in the adult population is the presence of a stone, usually a solitary stone, inside the ureterocele. CASE PRESENTATION: We are reporting a case of an adult ureterocele complicated by a large calculus; managed endoscopically with transurethral deroofing of the ureterocele followed by cystolitholapaxy...
February 28, 2018: International Journal of Surgery Case Reports
Sarah Prattley, James Voss, Stephanie Cheung, Robert Geraghty, Patrick Jones, Bhaskar K Somani
OBJECTIVE: To assess outcomes of ureteroscopy for treatment of stone disease in the elderly. Ureteroscopy (URS) is an increasingly popular treatment modality for urolithiasis and its applications are ever expanding with the development of newer technologies. Its feasibility and outcomes within the elderly population to our knowledge remain under-reported. MATERIALS AND METHODS: We examined the patient demographics and surgical outcomes from our prospective database for patients ≥70 years who underwent URS for urolithiasis, in a 5-year period between March 2012 and December 2016...
March 9, 2018: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Ho Won Kang, Kang Su Cho, Won Sik Ham, Dong Hyuk Kang, Hae Do Jung, Jong Kyou Kwon, Young Deuk Choi, Joo Yong Lee
Purpose: This study aims to assess the predictive factors and treatment outcomes of Steinstrasse formation following shock wave lithotripsy (SWL) for ureter stone. Materials and Methods: The medical records of 1,418 ureter stone patients who underwent one-session SWL from November 2005 to May 2013 at our medical institute were retrospectively reviewed. Finally, 551 patients met inclusion criteria. Maximal length and location of stone, stone attenuation (Hounsfield units), and skin-to-stone distance (SSD) were determined on pretreatment non-contrast computed tomography...
March 2018: Investigative and Clinical Urology
Janusz Ławiński, Zbigniew Jabłonowski
The improvement of surgical care requires transparent, consistent and accurate reports concerning surgical outcomes which are assessed and documented in a standardized manner. No consensus has yet been reached as to how to define and assess postoperative complications with regard to the specificity of urological procedures. Therefore, the comparison of data from different centres is difficult. The modified Clavien-Dindo classification allows for a more uniform analysis of surgical complications. This study analyses the occurrence of perioperative complications after percutaneous nephrolithotomy assessed on the basis of the aforementioned classification...
February 23, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
Mehmet Sarier, Ibrahim Duman, Yucel Yuksel, Sabri Tekin, Meltem Demir, Fatih Arslan, Osman Ergun, Alim Kosar, Asuman Havva Yavuz
Allograft lithiasis is a rare urologic complication of renal transplantation (RT). Our aim is to present our experience with minimally invasive surgical treatment of allograft lithiasis in our series of live-donor renal transplant recipients. In a retrospective analysis of 3758 consecutive live-donor RTs performed in our center between November 2009 and January 2017, the results of minimally invasive surgery for the treatment of renal graft lithiasis diagnosed at follow-up were evaluated. Twenty-two (0.58%) patients underwent minimally invasive surgery for renal graft lithiasis...
February 26, 2018: Urolithiasis
P K Saha, M S Hossain, K C Ghosh, M S Alam, S Nabi, B K Saha, F H Pathan
Ureteral stent placement is a common procedure in urologic practice. Forgotten, encrusted D/J stents represent a difficult problem for urologists. The major complications are infection, impaired renal function, migration, encrustation, stone formation and multiple fragmentation of stent. A consensus on the best therapeutic approach is still lacking. Here we present our experience with endoscopic management of this challenging problem and discuss the multimodal endourologic approaches for treating forgotten, encrusted ureteral stents...
January 2018: Mymensingh Medical Journal: MMJ
Sedat Oner, Ahsen Karagozlu Akgul, Murat Demirbas, Efe Onen, Murat Aydos, Abdullah Erdogan
INTRODUCTION: Upper pole access in percutaneous nephrolithotomy (PCNL) provides a straight tract to the ureter, resulting in easier placement of a guidewire to the ureter, good exposure of the pelvis, calices, and upper ureter, and comfortable manipulations. However, despite these benefits, upper pole access is usually avoided because of the risk of chest complications in both pediatric and adult patients. OBJECTIVE: We aimed to evaluate the safety and morbidity of single upper pole access in pediatric patients undergoing PCNL...
February 2, 2018: Journal of Pediatric Urology
Kari Hemminki, Otto Hemminki, Asta Försti, Jan Sundquist, Kristina Sundquist, Xinjun Li
Urolithiasis (UL, urinary tract stone disease) has been reported to increase subsequent cancers in the urinary tract. Recently, we showed data that surveillance bias may be an important confounder in the reported associations. In the present approach we want to address the question of possible cancer risk posed by UL mechanistically. Both UL and cancer have strong genetic components and we hypothesize that familial association between UL and cancer may be plausible. We thus assess familial risks between UL and cancer, hoping to find an explanation why UL may pose a risk of cancer...
February 15, 2018: Scientific Reports
Billy Sin, John Cao, David Yang, Karen Ambert, Sheena Punnapuzha
CLINICAL FEATURES: Renal colic is defined as a flank pain radiating to the groin caused by kidney stones in the ureter (urolithiasis). Renal colic is a frequent cause of Emergency Department visits. Most renal colic cases present as acute distress and severe back and/or abdominal pain that require prompt treatment with analgesics. THERAPEUTIC CHALLENGE: Nonsteroidal anti-inflammatory drugs and opioids are traditionally used for renal colic in the Emergency Department...
February 13, 2018: American Journal of Therapeutics
Marios Hadjipavlou, Vincent Lam, Jai Seth, Faqar Anjum, Seshadri Sriprasad
INTRODUCTION AND OBJECTIVES: Stone formers often have a chronic exposure to significant quantities of ionising radiation from radiological investigations and interventions. Predicting radiation exposure would allow the clinician to quantify expected cumulative radiation and find strategies to minimise exposure. We evaluated radiation exposure during ureteroscopy and laser lithotripsy (URS + LL) for a single stone episode and correlated the results to stone characteristics. METHOD: Data was collected retrospectively for all patients undergoing URS + LL in our institution over a 1 year period...
February 13, 2018: Urologia Internationalis
Kandarp Priyakant Parikh, Ravi Jineshkumar Jain, Aditya Parikh Kandarp
Introduction: Success of any modality for stone disease needs to be evaluated in terms of Stone Free Rates (SFR), auxiliary procedures needed; complications and follow up. SFR in RIRS is subject to parameters like stone burden, location, number, hardness, composition; calyceal and ureter anatomy; use of ureteric access sheath (UAS); surgeon experience etc. Methods: The aim of this study is to evaluate the efficacy and safety of RIRS for managing upper tract stones...
January 2018: Urology Annals
Esmee Iml Liem, Jan Erik Freund, Joyce Baard, D Martijn de Bruin, M Pilar Laguna Pes, C Dilara Savci-Heijink, Ton G van Leeuwen, Theo M de Reijke, Jean Jmch de la Rosette
BACKGROUND: Visual confirmation of a suspicious lesion in the urinary tract is a major corner stone in diagnosing urothelial carcinoma. However, during cystoscopy (for bladder tumors) and ureterorenoscopy (for tumors of the upper urinary tract) no real-time histopathologic information can be obtained. Confocal laser endomicroscopy (CLE) is an optical imaging technique that allows for in vivo high-resolution imaging and may allow real-time tumor grading of urothelial lesions. OBJECTIVE: The primary objective of both studies is to develop descriptive criteria for in vivo CLE images of urothelial carcinoma (low-grade, high-grade, carcinoma in situ) and normal urothelium by comparing CLE images with corresponding histopathology...
February 7, 2018: JMIR Research Protocols
Kyo Chul Koo, Jun-Ho Yoon, No-Cheol Park, Hye Sun Lee, Hyun Kyu Ahn, Kwang Suk Lee, Do Kyung Kim, Kang Su Cho, Byung Ha Chung, Chang Hee Hong
PURPOSE: Excessive bulking force during primary access of the ureteral access sheath (UAS) may induce ureteral injury. To investigate the efficacy of preoperative α-blockade for reducing UAS insertion forces (UASIF) and to determine the upper limit required to avoid ureteral injury. MATERIALS AND METHODS: In a randomized controlled trial, 135 patients from a single institution, who had ureteropelvic junction or renal pelvis stones and were planned to undergo retrograde intrarenal surgery (RIRS), were prospectively enrolled from December 2015 to January 2017...
February 1, 2018: Journal of Urology
Adarsh S Manjunath, Matthias D Hofer
Urologic emergencies can involve the kidneys, ureters, bladder, urethra, penis, scrotum, or testicles. History and physical examination are essential to diagnosis, whereas imaging is increasingly used to confirm diagnoses. Acute urinary retention should be relieved with Foley placement. Penile emergencies include paraphimosis, which can be treated by foreskin reduction, whereas penile fracture and priapism require urologic intervention. Fournier gangrene and testicular torsion are scrotal emergencies requiring emergent surgery...
March 2018: Medical Clinics of North America
Stefano Salciccia, Alessandro Sciarra, Milena Polese, Alpi Giorgio, Martina Maggi, Alessandro Gentilucci, Mauro Ciccariello, Giuseppe D'Eramo, Houssain Shahabadi, Silvia Lai, Gian Piero Ricciuti
Background: Ureteral strictures are a recurrent chronic condition that leads to severe side effects and poor quality of life. Management of ureteral stricture is a great challenge for urologists and no specific guidelines exist. Retrograde Allium® ureteral stent (AUS) is a newly developed ureteral stent to treat either bulbar urethral or ureteral stenosis. Case Presentation: We describe a case of a 74-year-old Caucasian adult male presenting with a severe ureteral stricture secondary to an ureteroscopy for stone disease...
2018: Journal of Endourology Case Reports
Stephanie Loeff, Manmeet Saluja, Michael Rice
AIM: To evaluate the incidence of acute symptomatic urolithiasis in the Auckland region. Associated epidemiological factors and stone characteristics were also studied and compared to previous research conducted in order to analyse trends. METHOD: All patients that presented acutely with symptomatic urolithiasis to the Auckland District Health Board (AHDB) between July 2014 and June 2015 were studied. Clinical data was obtained from medical records and population data was based on estimates provided by the Ministry of Health...
February 2, 2018: New Zealand Medical Journal
Dan Holmlund
There is evidence that α-adrenoceptor (α-AR) antagonists facilitate the passage of ureteric stones, but the mechanism behind this effect has not been established. If one accepts that it is the friction between a ureteral stone and the mucosa that hampers the passage of the stone, and that the passage traumatizes the mucosa, the aim of treatment must be to reduce this friction. Elevated pressure above an obstructing stone results in an increase in tension in the wall of the upper urinary tract, including the tension at stone level, which causes an increase in friction and ureteric colic...
February 1, 2018: Scandinavian Journal of Urology
Mehdi Aloosh, Félix Couture, Nader Fahmy, Mostafa M Elhilali, Sero Andonian
INTRODUCTION: We aimed to assess flexible ureteroscopic stone extraction skill of urology postgraduate trainees (PGTs) at an Objective Structured Clinical Examination (OSCE) and to determine whether previous experience in the operating theatre or practice on the simulator correlated with performance. METHODS: After obtaining ethics approval, PGTs from postgraduate years (PGYs) 3-5 were recruited from all four Quebec urology training programs during an OSCE. After a short orientation to the UroMentor™ simulator, PGTs were asked to perform Task 10 for 15 minutes, where two small stones from the left proximal ureter and renal pelvis were extracted using a basket...
December 1, 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
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