Histopathologic and immunophenotypic profile of a spontaneous mammary carcinoma in a male Humboldt's white‐fronted capuchin (Cebus albifrons)

摘要

Abstract A 20‐year‐old male captive Humboldt's white‐fronted capuchin (Cebus albifrons) that died accidentally had a small non‐ulcerative mammary nodule diagnosed as a mammary carcinoma. Immunohistochemistry demonstrated that neoplastic cells were positive for pan‐cytokeratin and cytokeratin‐7. Approximately 20% of neoplastic cells were positive for Ki‐67. Neoplastic cells expressed estrogen and progesterone receptors.