Perinephric abscess (presenting as abdominal pain) due to Listeria monocytogenes

A 5-year-old malnourished child was admitted with a 1-week history of paroxysmal abdominal pain. Evaluation finally revealed a left-sided perinephric abscess caused by Listeria monocytogenes. The child was successfully treated by drainage of the abscess and antibiotic therapy. Renal abscess should be kept in mind in the differential diagnosis of abdominal pain, and Listeria, an unusual pathogen, should be considered as a possible aetiology.