Cagnini, Didier Quevedo [UNESP]Thomas Heckler, Marta Cristina [UNESP]Moya-Araujo, Carla Fredrichsen [UNESP]Marques Araujo, Gustavo Henrique [UNESP]Amorim, Renee Laufer [UNESP]2014-05-202014-05-202011-01-01Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 32, n. 3, p. 1145-1149, 2011.1676-546Xhttp://hdl.handle.net/11449/13790The pathological findings in a 2-years-old Syrian hamster (Mesocricetus auratus) with a cutaneous myxosarcoma are described. Grossly, there was a large cutaneous mass in the right cervical region. Microscopical evaluation revealed a myxosarcoma characterized by pleomorphic, fusiform cells loosely arranged, randomly distributed, and presenting a moderate amount of basophilic amorphous stroma. There were hemorrhagic areas within the tumor. The basophilic amorphous stroma was positive to Alcian blue confirming the presence of a mucopolysaccharide matrix. Immunohistochemically, the neoplastic cells expressed vimentin, and were negative for cytokeratin or glial fibrillary acidic protein (GFAP).1145-1149engHamsterneoplasiamyxosarcomapathologyArtigo10.5433/1679-0359.2011v32n3p1145WOS:000297936600034Acesso abertoWOS000297936600034.pdf