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"Perinephric abscess is a collection of pus in the space between the kidney and Gerota`s fascia. The abscess usually is confined to Gerota`s fascia but may extend in several directions, such as a draining flank abscess through Petit`s triangle or subphrenic abscess. Rarely, this abscess perforates interpersonally or into the colon. Recently the majority of perinephric abscesses revealed that Gram negative organisms are more prevalent and are attributable to renal disease. This is a report on 6 cases of perinephric abscess admitted to National Medical Center during the pried from January 1970 to August 1977. The results are summarized briefly as follows : 1. Among the 6 cases of perinephric abscess, male was 5 cases and female 1 case Average age was 30 years. 2. 5 cases were located at Rt. side and 1 case at Lt side. 3. Main symptoms were flank pain, palpable mass and fever except 1 case, which was general weakness and weight loss. 4. Duration of symptom prior to adm. was variable, from 10 days to 1 year, average 88 days . 5. Pyuria was noted in 3 cases and leukocytosis in 5 cases. Of the abscess culture, 3 cases were E. coli, 2 cases Staphaureus and 1 case negative. 6. Psoas and renal shadow were obliterated in majority and I. V. P. revealed nonvisualization in 2 cases, faint and delayed visualization in 3 cases, kidney displacement in 3 cases and kidney fixation in 3 cases. 7. Only I & D was done in 3 cases and I & D with nephrectomy in 3 cases. 8. Kidney biopsy revealed chronic pyelonephritis in 2 cases and non-specific pyonephrosis in 1 case. 9. Average duration of Hosp, stay was 20 days."
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