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urinary calculi

M Fernández Ibieta, A Bujons Tur, J Caffaratti Sfulcini, J Alberola, D Bonín, R Jiménez Corro, H Villavicencio
INTRODUCTION: Extracorporeal Shock Wave lithotripsy (ESWL) is the cornerstone of pediatric urolitiasis management. We evaluated its efficacy and complications in a series of children. MATERIAL AND METHODS: Children who were managed with ESWL between 2003 and 2012 were retrospectively reviewed. We studied etiology, clinical presentation, stonefree ratio and relevant complications. SPSS 17.0 software was used. RESULTS: 90 children aged 0 to 10 years (median 2...
January 15, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
Jian-Xin Chen, Xiao-Xiang Yu, Yu Ye, Xiao-Bo Yang, Ai-Hua Tan, Xiao-Ying Xian, Su-Chun Wei, Jun Long, Zeng-Nan Mo
OBJECTIVE: Upper urinary calculi (UUC) is considered to be a comprehensive disease associated with many risk factors, but the role of physical activity (PA) is undefined. Here, we conducted a cross-sectional study to investigate this relationship in Asian populations. MATERIALS AND METHODS: Patients diagnosed with UUC were the subjects of study and those who participated in a health examination in local medical center were included as controls. Information was collected through the same standard questionnaire...
October 21, 2016: Urologia Internationalis
Yong Sung Won, Seung-Ju Lee, Hee Youn Kim, Dong Sup Lee
INTRODUCTION: Narrow working space is a major problem to overcome during retroperitoneoscopic ureterolithotomy. We evaluated initial 5 years experience of retroperitoneoscopic ureterolithotomy for large impacted upper ureteral calculi. PATIENTS AND METHODS: Between January 2011 and December 2015, a total of 37 consecutive patients were evaluated. A 12-mm camera port at middle of midaxillary line and two 5-mm working ports in posterior axillary line were created...
October 21, 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
S X Tang, H L Zhou, Y L Ding
Objective: To analyze the effectiveness of transurethral seminal vesiculoscopy in the treatment of persistent hematospermia, and oligoasthenozoospermia and azoospermia from ejaculatory duct obstruction. Methods: The clinical date of 56 cases of persistent hematospermia, or azoospermia/oligoasthenozoospermia from ejaculatory duct obstruction treated with transurethral seminal vesiculoscopy between November 2013 and January 2016 in the First Affiliated Hospital of Fujian Medical University were reviewed. A total of 30 cases were persistent hematospermia for 6 months to 3 years, with no response to routine antibiotic therapy for >4 weeks; 24 cases were obstructive azoospermia; and the other 2 cases were extreme oligoasthenozoospermia...
September 27, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Mehmet Taşdemir, Dilara Fuçucuoğlu, Oktay Özman, Lale Sever, Bülent Önal, Ilmay Bilge
BACKGROUND: Urinary silicate calculi in humans are extremely rare. Reported cases of silicate calculi are mostly documented in adults and are commonly related to an excessive intake of magnesium trisilicate in food or drugs. Published studies on the presence of silicate calculi in children are scarce. CASES: Three cases of silicate kidney stones without prior silicate intake are reported. Two patients underwent surgical treatment, and the third patient was treated using conservative methods...
October 5, 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
B Gerber, F Brandenberger-Schenk, E Rothenanger, C Müller
In this study data on composition of uroliths collected from cats and epidemiologic data of affected cats in Switzerland from 2002 to 2009 are summarised. Of 884 stones analysed 50% (n=441) were composed of calcium oxalate, 45% (n=398) of struvite, 3% (n=18) of ammonium urate, 1% (n=12) were mixed stones, 1% (n=9) were composed of silica, 3 stones were solidified blood, 2 consisted of cystine and 1of xanthine. 40% of the ureteral stones were composed of struvite. Domestic cats had significantly less calcium oxalate stones compared to British Shorthair or Persian cats...
October 2016: Schweizer Archiv Für Tierheilkunde
Tatenda Calvin Nzenza, Derek Barry Hennessey, Tim Dunshea, Nathan Lawrentschuk
Upper urinary tract rupture in the absence of trauma is typically related to ureteric calculi causing obstructive nephropathy. Spontaneous extravasation of contrast during CT intravenous pyelography (CT IVP) is infrequently reported. Two cases, who underwent CT IVP to further investigate positive urine cytology and microscopic haematuria, respectively, are described here. In both cases, there was spontaneous extravasation of contrast seen in the postcontrast scans in the absence of ureteric calculi or hydronephrosis which is very unusual...
2016: BMJ Case Reports
Matthias Meissnitzer, Thomas Meissnitzer, Stephan Hruby, Stefan Hecht, Andreas Gutzeit, Laura Holzer-Frühwald, Klaus Hergan, Rosemarie Forstner
PURPOSE: To retrospectively evaluate whether prone CT scanning is superior to supine scanning for correct localization of distal urinary calculi in patients with acute flank pain. METHODS: Consecutively performed unenhanced CT scans in patients with acute flank pain were retrospectively analyzed in 150 patients in supine and another 150 patients in prone position. Images were reviewed by two radiologists on consensus. Findings in both groups were compared using two-sided Fisher Exact tests and Wilcoxon-Mann-Whitney test...
September 26, 2016: Abdominal Radiology
Xingju Zheng, Yuanyuan Liu, Mou Li, Qiyan Wang, Bin Song
OBJECTIVE: A meta-analysis was conducted to determine the accuracy of dual-energy computed tomography (DECT) for differentiating urinary uric acid and calcified calculi. METHODS: The databases PubMed, EMBASE, Web of Science, and the Cochrane Library were searched up to May 2016 for relevant original studies. Data were extracted to calculate the pooled sensitivity, specificity, diagnostic odds ratio (OR), positive and negative likelihood ratios (PLR and NLR), and areas under summary receiver operating characteristic (AUROC) curves for analysis...
October 2016: European Journal of Radiology
Franklin C Lee, Sarah K Holt, Ryan S Hsi, Brandon Haynes, Jonathan D Harper
OBJECTIVE: To investigate whether the use of a Belladonna and Opium (B&O) rectal suppository administered immediately prior to ureteroscopy and stent placement could reduce stent-related discomfort. METHODS: A randomized, double-blinded, placebo controlled study was performed from August 2013 to December 2014. 71 subjects were enrolled and randomized to receive a B&O (15mg/30mg) or placebo suppository after induction of general anesthesia immediately prior to ureteroscopy and stent placement...
September 19, 2016: Urology
Theodora Stasinou, Andreas Bourdoumis, Junaid Masood
OBJECTIVES: To investigate a possible causal relationship for stone formation in pelviureteric junction obstruction and to outline management options. MATERIALS AND METHODS: A literature search and evidence synthesis was conducted via electronic databases in the English language using the key words pelviureteric junction obstruction; urolithiasis; hyperoxaluria; laparoscopic pyeloplasty; flexible nephroscopy; percutaneous nephrolithotomy, alone or in combination...
September 20, 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Ruchika Talwar, Michael Benson, Mina Fam, Vladislav Bargman, Nitin N Patel
Urologists rely heavily on indwelling ureteral stents to manage urinary tract obstruction secondary to calculi, malignancy, stricture, congenital anomalies, or edematous response to operative procedures(1). The use of a ureteral stent is a temporary intervention and requires removal to prevent potential complications. However, patient non-compliance with follow-up may lead to encrustation of the ureteral stent. Given the widespread use of indwelling ureteral stents in urologic practice, the issue of encrustation secondary to a retained stent is a significant clinical challenge...
September 14, 2016: Urology
Jun Li, Jing Xiao, Tiandong Han, Ye Tian, Wenying Wang, Yuan Du
We evaluated the clinical value of flexible ureteroscopic lithotripsy for the treatment of upper urinary tract calculi in infants. Fifty-five infants with upper urinary tract calculi were included in this study: 41 males and 14 females. Retrograde intrarenal surgery was performed by an 8 Fr/30 cm flexible ureterorenoscope (POLY®) combined with a holmium laser. CT scanning or radiography of the kidneys, ureters, and bladder region was performed one month after the operation to confirm the clearance of calculi...
September 15, 2016: Experimental Biology and Medicine
Hongwei Ge, Xiaoqing Zheng, Xinzhi Hou, Wenting Ding, Yanqun Na, Yuyong Wang, Zhijian Yu
INTRODUCTION: The traditional procedure for the management of bilateral ureteric stones is staged ureteroscopic lithotripsy(URSL). However, in recent years particularly, some urologists advocate same-session bilateral URSL on the ground of success rates and minimal morbidity. This systematic review is to evaluate the efficacy and safety of same-session bilateral ureteroscopy for the treatment of ureteral calculi. MATERIAL AND METHODS: We conducted a bibliographic search using MEDLINE(1980 to August 2015), EMBASE(1980 to August 2015)...
September 14, 2016: Journal of Endourology
Donboklang Lynser, Evarisalin Marbaniang, Pynskhemboklang Khongsni
Urinary retention in young children and infancy is relatively rare. The commonest malignancy cause of bladder outlet obstruction in infancy is prostatic rhabdomyosarcoma; the commonest cause of congenital bladder outlet obstruction in a male infantis posterior urethral valve and the commonest cause of urethral obstruction in male children is urethral calculi. We present here a report on three cases of urethral obstruction in male children.
September 2016: Medical Ultrasonography
Kleiton G R Yamaçake, Giovanni S Marchini, Sabrina Reis, Alexandre Danilovic, Fábio C Vicentini, Fábio C M Torricelli, Miguel Srougi, Eduardo Mazzucchi
PURPOSE: To compare the clinical, metabolic, and calculi characteristics of cystine and struvite stone patients after percutaneous nephrolithotripsy (PCNL). MATERIAL AND METHODS: Between January/2006-July/2013, 11 cystine stone patients were treated in our clinic. Of those, 3 were excluded due to incomplete follow-up. Eight cystine stone patients (2 with bilateral disease; 10 renal units-RU) were considered for further analysis. A cohort of 8 struvite stone formers (10RU) was matched having the same age, gender, body mass index (BMI) and Guys stone score...
September 1, 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
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
Mahmoud Abdelhamid, Ashraf A Mosharafa, Hamdy Ibrahim, Hany M Selim, Mohamed Hamed, Mohamed N Elghoneimy, Hosny K Salem, Mohamed S Abdelazim, Hesham Badawy
OBJECTIVE: To evaluate the ability of noncontrast CT parameters (stone size, stone attenuation, and skin-to-stone distance [SSD]) to predict the outcome of extracorporeal shockwave lithotripsy (SWL) in a prospective cohort of patients with renal and upper ureteric stones. PATIENTS AND METHODS: Patients with stones 5 to 20 mm were prospectively enrolled from 2011 to 2014. Patients had NCCT with recording of stone size, stone mean attenuation, and SSD, as well as various stone and patient parameters...
October 3, 2016: Journal of Endourology
Y F Shi, W G Li, J Zhang, S J Xia, X W Sun
OBJECTIVE: To evaluate the effect and double-J stent indwelling time in the treatment of acute upper urinary tract infection caused by ureteral calculi. METHODS: A prospective non-randomized controlled study was carried out. From January 2011 to August 2015, a total of 142 patients treated in Department of Urology of Shanghai First People's Hospital for ureteral calculi with systematic inflammatory response syndrome were divided into double-J stent indwelling 7 days group (n=63) and double-J stent indwelling > 7 days group (n=79)...
August 23, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Richard J Chaytor, Krishnamoorthy Rajbabu, Paul A Jones, Liam McKnight
OBJECTIVES: This study will evaluate the accuracy of Dual-energy CT (DECT) to characterise urinary tract stone composition on patients presenting to a UK hospital with renal colic. The study will also assess the additional radiation dose burden of DECT over standard protocol. METHODS: Data from 106 DECTs between October 2011 and October 2015 were retrospectively analysed. Patients were imaged using a Toshiba Aquilion ONE™ CT scanner. All patients received a low-dose non-contrast CT of the abdomen and pelvis prior to a stone-targeted DECT at 80 and 135 peak kilovoltages and 40mm field of view...
September 2, 2016: British Journal of Radiology
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