Mammary carcinoma in a male rhesus macaque (Macaca mulatta): histopathology and immunohistochemistry of ductal carcinoma in situ

Abstract

Background: A mammary nodule was noted in a male rhesus macaque during physical examination.

Methods and results: Histopathological and immunohistochemical analysis was performed. Ductal carcinoma in situ was confirmed.

Conclusions: To date, there are two reports of mammary carcinoma in male non-human primates, and none in the rhesus macaque.

Keywords: Breast cancer; DCIS; male; mammary gland; neoplasia; non-human primate.