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Round Cell Variant of Myxoid Liposarcoma in a Japanese Macaque (Macaca fuscata)

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Authors
Kwon, H.-J; Park, M.-S; Kim, D. Y.; Cho, D.-Y; Yoon, Byung-Il; Shin, Nam Shik; Kim, Dae-Yong
Issue Date
2007
Publisher
American College of Veterinary Pathologists
Citation
Vet Pathol 44:229-232, 2007
Keywords
Electron microscopyimmunohistochemistrynonhuman primateround-cell variant of myxoid liposarcoma
Abstract
A 5-year-old, female, Japanese Macaque (Macaca fuscata) was diagnosed with round cell variant of myxoid liposarcoma. At necropsy, multifocal to coalescing, reddish tan to white nodules, ranging from 0.5 to 1 cm in diameter, were noted throughout the omentum and retroperitoneum. Similar neoplastic nodules were also present in diaphragm, abdominal wall, and on hepatic capsule. Microscopically, neoplastic masses consisted of round to polyhedral cells, which had round, often eccentric nuclei and abundant eosinophilic granular and microvacuolated cytoplasm; Oil red O staining demonstrated large numbers of lipid droplets in the cytoplasm. Ultrastructurally, the cytoplasm of the tumor cells was packed with occasional lipid vacuoles and numerous enlarged mitochondria. Immunohistochemistry revealed tumor cells were positive for vimentin, while negative to cytokeratin, actin, and Factor VIII–related antigen. To the authors' knowledge, this is the first report of round-cell variant of myxoid liposarcoma in nonhuman primate.
ISSN
0300-9858
Language
English
URI
http://www.vetpathology.org/cgi/content/abstract/44/2/229

http://hdl.handle.net/10371/6974
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College of Veterinary Medicine (수의과대학)Dept. of Veterinary Medicine (수의학과)Journal Papers (저널논문_수의학과)
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