An invasive carcinoma formed of irregular groups of large malignant cells exhibiting focal ductal differentiation. Anaplasia and mitosis are marked and stromal fibrosis is mild. Areas of ductal carcinoma in situ (DCIS) of solid and comedo type are seen constituting about 25% of tumor areas. Lymphovascular invasion are seen but no evidence of perineural infiltration. Tumor is extending to margins of excision.
Breast mass with cystic changes.
Two fibrotic tissue fragments measure 1.7x1.5 cm and 1.5x1.3 cm. No evidence of surrounding tissue clearance.
Breast mass, wde local excision: