Korean Journal of Veterinary Research  2014;54(1):63-66

Myxoid liposarcoma in a dog.

Sung Joo JEON 1 ; Eun Sang CHO ; Hye Jin NOH ; Hwa Young SON

Affiliations

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Keywords

canine myxoid liposarcoma; oil red O stain; PAS stain; S-100; vimentin

Country

Republic of Korea

Language

Korean

Abstract

The pathological features of a mass in the back skin region of an 8-year-old castrated male dog are described herein. The cut section of the tumor was white to tan with a soft multilobulated mass containing hemorrhagic and necrotic foci and a mucinous-like composition. Microscopically, the tumor was composed of a mixture of lipocytes, lipoblasts, spindle cells and stellate cells and had a myxoid background. Oil red O staining revealed that the cytoplasm of neoplastic cells contained large numbers of lipid droplets. Immunohistochemically, tumor cells were positive for vimentin and S-100 protein. The skin mass was diagnosed as myxoid liposarcoma.