RESUMO
BACKGROUND: Pyogenic liver abscess (PLA) remains a serious disease with a mortality of 6-14%. METHODS: Clinical data of 76 patients with PLA were analyzed. Treatment options comprised antibiotics, percutaneous puncture/drainage, endoscopic papillotomy/stenting and/or surgery as indicated. RESULTS: Fifty-eight patients (76%) had single and 18 patients multiple PLA (right lobe: 65%; both lobes: 22%). The most frequent etiologies were: biliary (38%), hematogenous and posttraumatic (11%). Factors associated with the need for surgery included gallbladder empyema, biliary fistulas, malignancy, perforation, multicentricity, vascular complications and foreign bodies (e.g. infected ventriculo-peritoneal shunt, toothpick). CONCLUSIONS: Microbiological testing provides important information for treatment monitoring and modification. Complementary assessment of risk factors for a complicated course is crucial for timely identification of patients requiring additional treatment.