v.13, n.3, 10 – Mammary carcinoma in a mixed tumor with myeloid metaplasia component presenting Leishmania spp. in a dog

v.13, n.3, 10 – Mammary carcinoma in a mixed tumor with myeloid metaplasia component presenting <em>Leishmania</em> spp. in a dog

v.13, n.3, 10

Case Report

Mammary carcinoma in a mixed tumor with myeloid metaplasia component presenting Leishmania spp. in a dog

Alexandre Arenales, Jefferson Ferreira, Ana Carolina O. Almeida, Daniella B. Rozza, Maria Cecília R. Luvizotto

Abstract

Here is described a 9-years-old, intact female dog with cytopathological analysis from mammary tumors containing Leishmania spp. amastigotes in macrophages. The animal was submitted to euthanasia and necropsy was performed. Histopathological diagnosis was a mammary carcinoma in a mixed tumor, grade I, with myeloid metaplasia component containing macrophages laden with a large amount of amastigotes. For confirmation, immunohistochemistry was used in neoplastic tissue and resulted in strong positivity for Leishmania antibody. Myeloid metaplasia portion of mammary carcinoma in a mixed tumor may be, rarely, a site for diagnosis of Canine Visceral Leishmaniasis.

Key words: canine visceral leishmaniasis, cytopathology, immunohistochemistry, mammary gland tumor.

DOI: 10.24070/bjvp.1983-0246.v13i3p619-621