title: Perianal adenoma of apocrine origin in a dog.
abstract: At necropsy, a 15-year-old male Standard Poodle had a 6-cm diameter mass in the perianal region. Histologic examination revealed an adenoma of apocrine tubular gland origin, rather than the more common type of perianal gland adenoma derived from modified sebaceous glands. The diameter of the mass had increased from 3 to 6 cm in 12 months and it had failed to respond to treatment with repository stilbestrol.
mesh_terms: D000236:Adenoma / Q000473:pathology / Q000662:veterinary*; D000694:Anal Gland Neoplasms / Q000473:pathology / Q000662:veterinary*; D000818:Animals; D004283:Dog Diseases / Q000473:pathology; D004285:Dogs; D008297:Male; D013544:Sweat Gland Neoplasms / Q000473:pathology / Q000662:veterinary*