Sebaceous cell differentiation in a canine oral papilloma.
Papillomas caused by viral infection are well-known tumors in animals. Microscopic features typically include neoplastic epithelium with hyperkeratosis and koilocytes. An 8-y-old castrated male Shih Tzu dog was presented with a small exophytic mass on the external upper lip. The mass was diagnosed as a viral papilloma based on microscopic and immunohistochemical examination. Sebaceous cell differentiation was found in the neoplastic epithelium of the tumor, which is a rare finding in humans or animals.
['Gang|Du-Gyeong|DG|', 'Sim|Cheul-Hyeon|CH|', 'Lee|Tae-Je|TJ|', 'Kong|Joo-Yeon|JY|', 'Hong|Il-Hwa|IH|']
D000818:Animals D002454:Cell Differentiation D004283:Dog Diseases D004285:Dogs D008297:Male D010212:Papilloma D027383:Papillomaviridae D030361:Papillomavirus Infections D012867:Skin D012878:Skin Neoplasms
sebaceous cells Dogs papillomavirus