抄録
Although it is rare, renal and peri-renal abscess should be considered when a child spikes fever of unknown origin and/or flank mass. Diagnostic difficulty of renal and peri-renal abscess can be overcomed by the combination of intravenous pyelography, ultrasonography and computed axial tomography. Change in pathogenic organism from classical staphylococcus to gram negative bacilli or fungi was verified. Surgical intervention is mandatory when clinical response to intensive chemotherapy is poor. Based on our experience of three cases with literal review, diagnosis and treatment of renal and peri-renal abscess were discussed.