[class of parasitic flukes consisting of three subclasses, Monogenea, Aspidogastrea, and Digenea; the digenetic trematodes are the only ones found in man; organisms are endoparasites and require two hosts to complete their life cycle. ( CSP )]
UMLS (CSP) C0040818 Relation/PAR: flatworm
Relation/CHD: Schistosoma