Renal Stone

Stone Composition in Patients Who Undergo Renal Stone Surgery: Review of 423 Stone Analyses in Southern Iran

Randall plaque versus renal stone?

A 43-year-old patient has just left the office. Her primary care physician had dutifully evaluated her recent complaint of vague abdominal pain with an abdominal ultrasound. The multiple, small, punctate hyperechoic lesions in the kidney were deemed concerning for renal calculi and an abdominal computed tomography (CT) scan was ordered to better delineate these " renal stones ". The CT report r...

Metabolic Disorders and Renal Stone

Introduction Research into the aetiology of calculus disease has failed to reveal the fundamental cause of stone formation, but it is apparent that various factors predispose to their development. Renal calculi are likely to occur in most diseases in which there is an increased urinary excretion of crystalloid stone-forming substances. Calcium phosphate and oxalate stones are particularly liabl...

Percutaneous renal biopsy specimens in stone formers.

A series of renal biopsy specimens taken at the time of percutaneous nephrolithotomy were investigated for the presence and location of foci of microcalcification. Calcium was found in 18 of 25 (72%) of biopsy specimens from stone formers and in only seven of 30 (23%) of control biopsy specimens. This may indicate defective intrarenal handling of calcium as plasma calcium concentration was norm...

[Renal morphology and urodynamic factors for renal stone formation].

Studies on the pathogenesis of urolithiasis have mainly focused on metabolic disorders. However, metabolic disorders alone are not sufficient to explain the problem. In the present study, morphological and urodynamic differences of the upper urinary tract on both the stone and normal side were examined. There were 35 cases of those who had experienced unilateral, recurrent, and/or multiple ston...