Pathological features of sebaceous gland tumors in dogs in Ha Noi and Ho Chi Minh City

Abstract

Sebaceous gland tumors commonly occurre in the skin of dogs. In the present study, these neoplasms were found in the skin of five dogs at 7 to 14 years old, in some veterinary clinics in Ha Noi and Ho Chi Minh City. The studied result showed that, the sebaceous gland tumors occurred at many sites on the dog skin with size ranging from 0.5 to 2.5 cm, swollen, hairless and hemorrhage. The result of examining histopathology of the sebaceous gland tumors indicated that the common types of canine sebaceous gland tumors was benign sebaceous adenoma and malignant sebaceous epithelioma. A preponderance of abundant pale eosinophilic mature sebocytes with fewer basaloid cells and ducts were observed in sebaceous adenoma, whereas a preponderance of small basophilic basaloid cells with fewer sebocytes was seen in sebaceous epithelioma. The mitotic phenomena was frequently found in malignant epithelioma type. Importantly, histological examination of the margins of sebaceous tumor need to be done so as to evaluate the completion in surgery, removing the tumors as well as limiting the reoccurrence of the tumors. The results of this study provide information on the clinical features, gross and histological lesions of the canine sebaceous gland tumors so as to serve for diagnosis and treatment.