Mammary hemangiosarcoma: report of histopathological examination

Abstract

Hemangiosarcoma (HSA) is a common form of neoplasm in dogs, characterized by the malignant growth of endothelial cells in blood vessels. This neoplasm is highly aggressive and often shows metastatic behavior, with tropism for well-vascularized tissues and characterized by fragile capillaries, leading to hemorrhagic conditions, causing the death of most affected animals, as well as causing a series of hematological abnormalities. Diagnosis can be made by cytology and confirmed by histopathological examination. Treatment is comprised of surgical removal of the affected nodule or organ, accompanied by chemotherapy protocols. A histopathological examination was carried out on a cutaneous tumor in the mammary area of a seven-year-old Dachshund bitch, which was diagnosed as a hemangiosarcoma. The aim of this paper is to report a case of canine mammary hemangiosarcoma and to show the importance of histopathological examination in routine veterinary medicine diagnoses.