Abstract
2,969 stones, obtained from affiliated hospitals as well as the Osaka University Urologic Clinic were analyzed by infrared spectrophotometry. 2,724 of the 2,969 stones were obvious upper urinary tract stones, and the composition of these 2,724 stones is reported. The incidence and possible cause of stones in 750 patients with upper urinary tract calculi, managed in Osaka University Urologic Clinic, are discussed, as well as the recent figures on urinary tract stone disease in Osaka district. These figures are representative of stone disease in Japan.
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