opisthorchiasis /ō′pisthôrkī″əsis/ [Gk, opisthen, behind, orchis, testicle, osis, condition] , infection with one of the species of Opisthorchis liver flukes commonly found in the Philippines, India, Thailand, and Laos. Carcinoma of the intrahepatic bile ducts may be a late complication. Adequate cooking of freshwater fish prevents the disease.
