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A clinical survey was made on 15 cases of perinephric abscess who were admitted to the department of urology during 12 years from May, 1972 to April, 1984. We reviewed perinephric abscess, analyzed according to incidence, symptoms, laboratory finding, culture in urine and blood and abscess, sensitivity to antibiotics, associated disease, radiographic finding and treatment. On the abscess culture, the organisms were identified in 12 cases (80.0%) : S. aureus was in 5 cases, E. coli in 5 cases, Hemolytic streptococcus in 1 case and Klebsiella in 1 case. The diagnostic ultrasonographic evaluation in perinephric abscess performed in 6 cases and documented it was very highly valuable method. The treatment was satisfactory with incision and drainage in 9 cases and with nephrectomy in 6 cases. The average duration of hospital stay was 21 days.
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