Sebaceous metaplasia in a canine mammary gland non-infiltrative carcinoma with myoepithelial component
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Undergraduate course
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Sage Publications Inc
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Article
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Acesso aberto
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Abstract
Sebaceous metaplasia in canine mammary tumors is a rare condition with only 1 case documented. The current study describes a case of sebaceous metaplasia in a mammary gland carcinoma of an 8-year-old intact, nulliparous female Poodle dog with a subcutaneous tumor located in the left fifth mammary gland. The lesion measured 0.7 cm x 0.5 cm x 0.6 cm in diameter, was firm, circumscribed, painless, non-haired, and non-ulcerated, and did not adhere to deep tissues. The cut surface was non-lobulated, non-encapsulated, whitish to gray, and opaque. Histological evaluation revealed 3 different populations of cells: the first was composed of columnar to cuboidal malignant epithelial cells arranged in intraductal papillary projections, the second of myoepithelial cells associated with a myxoid stroma, and the third presenting sebaceous metaplasia similar to those previously described in both human and veterinary medicine.
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Keywords
Dogs, mammary carcinoma, neoplasia, sebaceous metaplasia
Language
English
Citation
Journal of Veterinary Diagnostic Investigation. Thousand Oaks: Sage Publications Inc, v. 23, n. 6, p. 1230-1233, 2011.
