Hepatic biliary adenofibroma: a hitherto unrecognized tumor in equines. Report of a case.
Hepatic biliary cystadenoma is a well-delineated neoplasm in some domestic animals, especially in cats, but it has not been reported in equines. We report on a case of hepatic biliary tumor, incidentally found in a 10-year-old horse, with gross and microscopic features similar to those observed in biliary adenofibroma of humans. The tumor presented as a solid mass measuring 16 cm in diameter and histologically was composed of complex tubulocystic biliary components embedded in an abundant fibrotic stroma. We regarded this tumor as a morphological variant of biliary cystadenoma of domestic animals. Differential diagnoses from other hepatic biliary tumor-like and tumor lesions are provided.
Salvaggio
A
A
Caracappa
S
S
Gurrera
A
A
Magro
G
G
D000232:Adenofibroma / Q000473:pathology / Q000662:veterinary*; D000818:Animals; D001650:Bile Duct Neoplasms / Q000473:pathology / Q000662:veterinary*; D006734:Horse Diseases / Q000473:pathology*; D006736:Horses; D007150:Immunohistochemistry / Q000662:veterinary; D008113:Liver Neoplasms / Q000473:pathology / Q000662:veterinary*