# Heterophyes heterophyes

National Cancer Institute

## Source

National Cancer Institute. *Heterophyes heterophyes*. NCI Thesaurus. Code C123489.

A species of parasitic flatworms in the family Heterophyidae. The lifecycle of H.
heterophyes involves snails as the first intermediate host, freshwater fish as the second
intermediate host, and humans, fish-eating carnivores, or birds as the definitive host.
Infestation causes heterophyiasis.