a.k.a. "southeast asian liver fluke" (endemic)
Trematode
Also within genus:<unk>  felineus (Europe/Asia incl Russia) 
Eggs pass in feces → freshwater snail ingestion → larval trematode embeds in fish skin/flesh → Fish consumed raw → duodenal cyst and subsequent biliary infection
Fluke count may effect clinical presentation (lower counts more asymptomatic)
Exposure to endemic areas (see above)
Consumption of raw/undercooked fish
May have acute infectious phase
Source of mild and moderate GI disease
Chronic infection predisposes to cholangitis, cholcystitis, cholangiocarcinoma (rare)
Opisthorchis viverrini
Taenia saginata
Fasciola hepatica
Taenia solium 
Clonorchis sinensis
Diphyllobothrium latum
Toxocara canis
Hymenolepis nana