A small bowel infection that is caused by fasciolopsis buski, which is endemic in the far east and southeast asia, and which is transmitted via the consumption of raw or undercooked aquatic plants. the spectrum of manifestations range from asymptomatic to intestinal symptoms from local invasion or allergic response.

Fasciolopsiasis results from an infection by the trematode Fasciolopsis buski, the largest intestinal fluke of humans, growing up to 7.5 cm (3.0 in) long..