Routine pathological findings of the right breast cancer. (a) Gross view shows an ill-defined solid tumor (surrounded by arrowheads). Scale bar: 1 cm. (b) Invasive micropapillary carcinoma (IMPC) components (surrounded by arrowheads) are seen with the background of tubule-forming invasive carcinoma. Hematoxylin and eosin (H&E) stain, scale bar: 400 μm. (c) IMPC components are mixed in the background tumor, with the transition in histology (surrounded by arrowheads). H&E stain, scale bar: 100 μm.