Morphological features of BLBCs (HE staining).A. Metaplastic carcinoma shows pushing growth and necrosis (x40). B. Medullary carcinoma with marked lymphocytic response and lacking tubule formation (x200). C. Tumor shows large central necrosis (x200). D. Invasive ductal carcinoma demonstrates moderate lymphocytic response and large central scar (x200). E. Tumor cells exhibit varying amount of cytoplasm, numerous mitosis and nuclear atypia; most of the tumor cells have vesicular chromatin and prominent nucleoli (x400).
Cakir et al. Diagnostic Pathology 2012 7:145 doi:10.1186/1746-1596-7-145