Hemangiosarcoma (Hemangioendothelioma) in a tigress (Panthera tigris) - A case report Shilpa V.T.*, Girish B.C., Ravikumar P. Department of Veterinary Pathology, Veterinary College, Hassan-573202, Karnataka, India. *Address for Correspondence, Dr V.T. Shilpa, Department of Veterinary Pathology, Veterinary College, Vidyanagar Post, Hassan-573202, Karnataka, India, E-mail: drshilpavt@gmail.com
Online Published on 28 July, 2022. Abstract Hemangiosarcoma is a malignant mesenchymal tumor arising from vascular endothelium which form irregular anastomosing vasoformative channels occurring most frequently in dogs than in other species and with a high fatality rate. A Bannerghatta Biological Park (BBP) born tigress aged about 4 years presented to Wild Animal Disease Diagnostic Laboratory, BBP near Bengaluru for Postmortem examination showed bleached visible mucosa, with presence of ticks on the body. A hard swelling that was roughly spherical with 4-5 cm diameter was observed attached to the skin in the left forelimb in the humerus region. On internal examination, lung was enlarged and congested with presence of large number of encapsulated oval to circular lesions of varying sizes throughout the lung parenchyma. Spleen was enlarged, congested and showed presence of 6-7 of encapsulated lesions of varying size in diameter similar to the ones found in the lungs. The representative sample from the mass were collected in 10% neutral buffered formalin (NBF) and processed conventionally for histopathological examination. Histopathological examination of the mass revealed sheets of fast multiplying anaplastic endothelial cells with hyperchromasia, pleomorphism, increased nuclear to cytoplasmic ratio and increased mitotic proliferation. It also showed formation of vascular spaces (cavernous and capillary) filled with RBCs. Blood spaces were formed due to endothelial proliferation. The present case describes a hemangiosarcoma in a Bengal tigress and its pathological features. Top Keywords Hemangiosarcoma, Lung, Spleen, Tigress. Top |