title: Spontaneous cholangiocarcinoma in a ring-tailed lemur (Lemur catta).
abstract: A cholangiocarcinoma in the liver with metastasis to the regional lymph nodes was found in a male ring-tailed lemur (Lemur catta). The liver was partially replaced by a gray-white, coarsely lobulated mass. Microscopically, the tumor consisted of well circumscribed lobules of anaplastic, low cuboidal cells occasionally arranged in duct-like structures. The tumor did not involve the gallbladder.
mesh_terms: D002759:Adenoma, Bile Duct / Q000473:pathology / Q000662:veterinary*; D000818:Animals; D007900:Lemur; D008099:Liver / Q000473:pathology; D008113:Liver Neoplasms / Q000473:pathology / Q000662:veterinary*; D008207:Lymphatic Metastasis; D008297:Male; D011443:Strepsirhini