An unexpected pulmonary bystander.

A 30-year-old man from Eritrea was admitted with a pulmonary bacterial abscess. Unexpectedly, histopathology of the resected lobe also revealed an infection with Schistosoma mansoni with surrounding granulomatous tissue and fibrosis. Patients from endemic areas are often asymptomatic with blood eosinophilia being the only diagnostic clue. Early recognition is important as ongoing fibrosing inflammation may result in organ damage.