Japanese Journal of Veterinary Research;Volume 18, Number 3

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RHABDOMYOSARCOMA IN THE CHICKEN

FUJIMOTO, Yutaka;OKADA, Kosuke;OKADA, Masaaki

Permalink : http://hdl.handle.net/2115/1960
JaLCDOI : 10.14943/jjvr.18.3.109

Abstract

A case of a hen's-egg-sized rhabdomyosarcoma which originated in the skeletal muscles (M. biceps femoris) in the right leg was described in a 140 day female chicken. A broad-bean-sized metastatic nodule was seen in the spleen. Histologically, the tumor cells showed pleomorphism and definite cross striations were found only in some tumor cells. The ultrastructure revealed bundles of myofilaments and electron opaque substance resembling the components of Z-lines in some part of the cytoplasm of the tumor cells. These findings are suggestive of a striated muscle cell origin of the tumor. There were numerous C-type virus particles in the intercellular spaces of the tumor.

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