Analysis of Urolithiasis

Park, Nam Il; Chung, Sung Kwang; Park, Yoon Kyu

Abstract

The problem of urolithiasis remains unsolved despite a vast amount of clinical observation and experimental research. But the accurate analysis of urinary stone is fundamental for study of the etiology of stone formation and essential for treatment of urinary stone and its prevention. A retrospective review of stone analysis was performed by special analytic facilities, Louis C. Herring and Company, which was certified by many urologists in worldwide. The stones were obtained from the patients visited our hospital during the period from September, 1987 to July, 1992. And the following results were obtained. 1. The male to female ratio was approximately 1.9:1, and 76.7% of patients of urinary calculi were distributed in 30 to 60 years old. 2. The location of urinary calculi were ureter 57.5%, kidney 35.2%, bladder 4.2% and urethra 3.1%. 3. Among the all components analyzed in this study, calcium oxalate monohydrate was the most common constituents, comprising 84.5% of the total. And the calcium oxalate dihydrate and calcium phosphate were the second common constituents, comprising 72.5 %. 4. Calculi of mixed component, comprising 86.5 %, was more common than those of single component, comprising 13.5%. Calcium oxalate monohydrate was the most common component in both pure and mixed stone. 5. Reclassifying authors' result according to the main group for comparison with previous other results, authors' result was different form those of western, but similar with middle and far eastern results.