Hemangiosarcoma in a free-living Rufous-bellied Thrush (Turdus rufiventris)

ABSTRACT

Background: Hemangiosarcoma is a malignant endothelial cell-derived neoplasm characterized by an intense cellular proliferation organized in a solid or cavernous pattern. Is characterized by intense cell proliferation, and organized in vascular slits, filled with blood, with fast grow and there is a high recurrence rate. This paper reports a case of multiple hemangiosarcoma in a Rufous-bellied Thrush (Turdus rufiventris). Case A free-living Rufous-bellied Thrush (Turdus rufiventris), was attended at the veterinary hospital of the Federal University of Mato Grosso (UFMT) - Cuiabá, presenting prostration and three masses located in the following regions left periorbital area, left lateral insertion of the beak and distal portion of the left tibia. The masses were blackened colored with an irregular aspect, and the cut surface was multiple cavity, filled with a blackened gelatinous material. The animal died during the surgical procedure and was sent to necropsy. Additionally, special immunohistochemistry staining was used in the tumors sections, with primary anti-S-100, anti-Von Willebrand Factor, anti-desmin, anti-actin, anti-cytokeratin and anti-vimentin. The three masses have rounded shape, multilobuled surface, deep red to blackened color, with skin adhered base, and, when cut, blackened color with multiple cavities filled with red to blackened gelatinous material and [...]