Teratoma in a chicken (Gallus domesticus).
A large mass composed of multiple tissue elements was observed in the abdominal cavity of a chicken. The tumor mass was tridermic microscopically, and therefore classified as a teratoma.
D000818:Animals; D002645:Chickens; D008297:Male; D011201:Poultry Diseases / Q000473:pathology*; D012186:Retroperitoneal Neoplasms / Q000473:pathology / Q000662:veterinary*; D013724:Teratoma / Q000473:pathology / Q000662:veterinary*