Alves, R.C.C. Batista, T.L. Laufer-Amorim, R. Elias, F. Calazans, S.G. Fonseca-Alves, C.E. Clinicopathological and immunohistochemical evaluation of oesophageal leiomyosarcoma in a dog Subjects--Topical Terms: CÃODOENÇA ANIMALNEOPLASIAVETERINÁRIA