Case Report of a Breast Mass with Three Types of Malignant Tumors—Squamous Cell Carcinoma, Invasive Ductal Carcinoma, and Breast Sarcoma

Abstract: Breast malignancy comprises malignant tumors originating from epithelial tissue and breast sarcoma arising from mesodermal tissues. Despite heterogeneity in tumors, most malignant tumors of the breast are composed of a single type of tumor. Here, we report a patient with breast tumor consisting of three different types of malignancies—squamous cell carcinoma, invasive ductal carcinoma, and high-grade breast sarcoma. Keywords: breast malignant tumor, squamous cell carcinoma, invasive ductal carcinoma, breast sarcoma