Rare type of grade ii lipid-rich canine mammary carcinoma

Abstract

A Daschund intact bitch had a single spherical, multinodular and greyish white mass, measured about 6.5cm, on the left caudal abdominal mammary gland. Fine needle aspiration biopsy examination revealed the presence of numerous epithelial clusters with malignant characteristic of nucleus and cytoplasm. Histopathological examination revealed that cysts were separated by fibrovascular connective tissue. Round to oval neoplastic cells with distinct cell borders. There were multiple small to large solitary vacuoles in the cytoplasm that pushed the nuclei to the periphery of the cell (Signet ring cell). Based on the cytological and histopathological examination the case was diagnosed as special type of Grade II lipid- rich carcinoma.