Trichoepithelioma in goat: A case report

A surgically removed, formalin fixed tissue fromsoft, off white, ulcerated, glandular mass at junction of left teat and udder, of an about 5-year-old mixed breed goatwas submitted for histopathological evaluation. Microscopically, neoplastic mass was composed of islands and nests of neoplastic cells that form variable sized keratin filled cysts and supported by a moderate fibrovascular stroma. Neoplastic cells underwent incomplete trichogenesis.In the center of islands and nests of neoplastic cells showed matrical keratinization indicative of infundibular origin. On basis of histopathology, the tumor was diagnosed as benign trichoepithelioma.