breast cancer cell breast invasive ductal carcinoma cell BTO:0002844 BrendaTissueOBO IDC cell Infiltrating ductal carcinoma is one of several recognized specific patterns of cancer of the breast. It is so named because it begins in the cells forming the ducts of the breast. It is the most common form of breast cancer, comprising 65-85% of all cases. breast infiltrating ductal carcinoma cell invasive ductal carcinoma cell mammary ductal carcinoma cell