One of the most common types of urinary stones formed in humans and some other mammals is composed of calcium oxalate in ordered hydrated crystals. Many studies have reported a range of metals other than calcium in human stones, but few have looked at stones from animal models such as the dog. Therefore, we determined the elemental profile of canine calcium oxalate urinary stones and compared i...

Melamine is a new risk of urinary stones. Gansu province is a heavily affected area and has large population and underdeveloped economy. We hypothesized that number of family members and family income may play significant roles in the formation of urinary stones. A case-control study was performed among 190 infants. Results showed that the case group had less numbers of family members than the ...

A 52-year-old man was referred for the evaluation of mild renal failure with severe hypertension (220/130mmHg), which was resistant to combination therapy of a calcium channel blocker and an angiotensin II receptor blocker. Although he reported no past history indicating urolithiasis, urinalysis revealed plenty of round brownish stones (Figure 1A). The stones resembled uric acid (UA) stones (Fi...

INTRODUCTION Bladder stone is the most common form of lower urinary tract stones and constitutes 5% of all urinary tract stones. The giant bladder stones are very rare and our report was the first one in Iran and in the world. CASE PRESENTATION The patient was a 35-year-old man who was referred to our urology clinic with the lower urinary tract symptoms. Irritative symptoms were dominant with...

PURPOSE To compare the detection of urinary stones using standard gray scale ultrasound for diagnostic accuracy using the color Doppler "twinkling sign". MATERIALS AND METHODS Our study population consisted of forty-one patients who demonstrated at least one urinary stone on unenhanced CT evaluation of the kidneys or ureters. Each patient was evaluated using gray scale ultrasound and color Do...

Objective: The purpose of this study was to asses the accuracy of criteria in distinguishing distal urinary stones from phleboliths defined in the literature with thin-slice unenhanced helical computed tomography (CT). Materials and Methods: Between October 2004 and April 2005, we performed 3 cm length thin-slice (2 mm section thickness, pitch:1) helical CT on 31 patients with urinary stones an...

To estimate the prevalence of urinary stone disease in Koreans, and to determine the inter-relationships between urinary stone disease and various epidemiological factors, 1,521 controls and 1,177 cases with urinary stones were evaluated. Of special interest in this study were: 1) proportion of past urinary stone history among controls; 1.9% 2) the point prevalence rate of urinary stones among ...