Renal and perinephric abscesses: a series of 44 cases
Abscesos renales y peri-renales: análisis de 44 casos

Juan Fullá, Oscar Storme, Alberto Fica, M Antonieta Varas, José Flores, Fernando Marchant, Daniel Varas
2009 Revista chilena de infectología  
Renal abscesses are infrequent event and may occasionally be fatal. In order to characterize its main clinical features, its diagnosis and evolution, a retrospective-descriptive study was done with cases identified between 1996 and 2006 in a teaching hospital. Forty-four cases were collected (mean age 49.9 years). Diabetes mellitus was present in 38.6%, urinary calculi in 36.4%, and previous urinary tract infection in 11.4% of the studied population. Enterobacteriaceae were the most frequent
more » ... he most frequent isolated microorganisms (44.4%), and 33.3% had a poli-microbial culture in abscess samples. S. aureus was rarely identified. Main therapeutic approaches were minimally invasive procedures (pigtails, percutaneous drainage or nephrostomy) in 50% followed by surgical interventions (nephrectomy or surgical debridement) in approximately 30%. Only 20.5% of patients were treated exclusively by antibiotics. Minimally invasive procedures were applied progressively after 2001 (p < 0.005). In this series case-fatality rate was 4.5%; 13.6% (n = 6) developed septic shock. Nephrectomy was performed in 9 cases (20.5%). Patients selected for nephrostomy had a lower risk for ICU admission (Odds Ratio 0.083 IC95 0.008-0.911). Renal abscesses are cause of morbidity but had a low case-fatality ratio; the therapeutic approach has changed in recent years favoring at present minimally invasive procedures.
pmid:19915755 fatcat:n4h5fuah6fhjtdo3mfxpcst67y