A Rare Case of Primary Carcinosarcoma of the Breast

Abstract

Breast carcinosarcoma is a rare malignancy accounting for approximately 0.08–0.2% of all breast tumours. It is a type of metaplastic mammary carcinoma displaying biphasic differentiation with epithelial and mesenchymal cellular characteristics with probable derivation from myoepithelial cells.

Keywords

• breast cancer
• carcinosarcoma
• triple-negative
• biphasic differentiation
• rare histology
• poor prognosis