Recurrences in primarily infected and uninfected urolithiasis.

An analysis was carried out of 640 patients treated because of urolithiasis at the Urological Clinic of the Medical Academy in Warsaw in the years 1971--1974. Factors conducive to stone formation were analyzed. In infected urolithiasis, different bacterial floras were found in men and women. The importance of infections acquired in hospital by patients is emphasized. In primarily uninfected urolithiasis there were 35 per cent recurrences, as against 53 per cent recurrences in infected urolithiasis.