[A man from Surinam with haemorrhagic diarrhoea after long-standing schistosomiasis].

A 35-year-old man presented with a brief history of haemorrhagic diarrhoea. He had moved to The Netherlands 24 years before and had been in Surinam 12 years ago for the last time. Physical examination and routine laboratory tests revealed no abnormalities. Colonoscopy showed a striking congestion of the small blood vessels; histological examination of a sigmoid biopsy revealed Schistosoma eggs and microbiological investigation of the feces revealed ova of Schistosoma mansoni. The schistosomiasis was thus diagnosed more than 10 years after the last possible exposure to schistosomal cercariae. The patient was treated with a single dose of praziquantel.