Since we recognized the first case of triamterene nephrolithiasis1, we have attempted to compile and investigate all similar cases. In the last 18 months, we found 436 additional cases among the 160,000 calculi (0.3%) submitted to the Louis C. Herring company and obtained clinical histories for one quarter of the cases. The purpose of this communication is to: 1) describe the appearance of triamterene in urinary calculi, 2) describe the chemical tests used to identify and quantitate these deposits, and 3) report the clinical findings of patients who have passed these stones.
KeywordsCalcium Oxalate Renal Calculus Urinary Calculus Calcium Stone Calcium Oxalate Stone
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