To cite: Prakash J, Goel A, Kumar M, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2013200168 DESCRIPTION A 42-year-old man presented with a 2-day history of severe colicky pain in the left flank with vomiting. X-ray (figure 1A) and ultrasonography showed a 13 mm left vesicoureteric junction calculus (figure 1B) with moderate hydroureteronephrosis and sma...

BACKGROUND Hypocitraturia, or low urinary citrate excretion is known as a risk for nephrolithiasis. Though urinary citrate excretion is basically determined by acid-base balance, metabolic acidosis is not always manifest in urinary stone patients with hypocitraturia. From our stone clinic data, we estimated the incidence of hypocitraturia and addressed its causes in the absence of obvious acid-...

Self-calcifying, self-replicating nanoparticles have been isolated from calcified human tissues. However, it is unclear if these nanoparticles participate in disease processes. Therefore, this study was designed to preliminarily test the hypothesis that human-derived nanoparticles are causal to arterial disease processes. One carotid artery of 3 kg male rabbits was denuded of endothelium; the c...

Nephrolithiasis is one of the most frequent urologic diseases. The aim of this paper is to study the composition and frequency of 8854 patient kidney stones and in a subset of them their metabolic risk factors to be related to their type of calculi. Physicochemical and crystallographic methods were used to assess kidney stone composition. In a subset of 715 patients, we performed an ambulatory ...

OBJECTIVE To investigate the effect of renal function on the stone-free rate (SFR) of proximal ureteric stones (PUS) after extracorporeal shock wave lithotripsy (ESWL), as urinary obstruction caused by PUS can impair renal function, and elevated serum creatinine levels are associated with decreased ureteric stone passage. PATIENTS AND METHODS From January 2005 to December 2007, 1534 patients ...

background: the aim of this study was to describe the one-decade experience in percutaneous nephrolithotomy surgery in children with kidney stones in tehran, iran. methods: all patients (less than 18 years old) undergoing percutaneous nephrolithotomy at our referral medical center, were reviewed in this cross-sectional study. all the demographics, surgical data and post-operative information we...

OBJECTIVE To report preliminary information on urinary stone composition in patients who are either overweight or obese with kidney stone disease. METHODS A cohort of patients (n = 138) with nephrolithiasis were prospectively followed from January 2011 for 18 months. Of those, 64 (46%) were found to be overweight with body mass index ≥ 25 kg/m(2) and 74 (54%) were obese with body mass index ≥...

OBJECTIVES Many patients present with bilateral stones. There is a unique group of patients, however, that presents with stones exclusively on one side. We hypothesize that in such situations, 24-hour urine collections may not reveal specific defects on the affected stone-bearing kidney. We therefore evaluated selective 12-hour urine collections after percutaneous nephrolithotomy (PNL) to help ...

Sir, Horseshoe kidney is the most common congenital renal fusion anomaly, with an incidence of 1 every 400–1600 births.[1,2] Kidney stones are common in patients with horseshoe kidney with a reported incidence ranging approximately from 20% to 80%.[1,3] Although altered anatomy‐related impaired urinary drainage is a proposed explanation for the kidney stone formation in patients with horseshoe ...

OBJECTIVE To review our experience of PCNL in horse shoe kidneys. METHODS Between June 2001 and January 2005 we performed PCNL in 16 Horse shoe kidneys in 14 patients with calculi, 2 patients had bilateral calculi. Percutaneous puncture was made with patient in prone position. Their ages ranged between 4 to 52 years with a mean age of 26.3 years. Our mean stone burden was 820 mm2 (range 40-13...