Figure 1

Three types of residual cancers. (A) Type I residual cancer. Solitary residual breast cancer can be seen (arrow). There is a large quantity of lymphocyte infiltration in the margin of the cancer lesion. There are no residual cancer cells, cancer cell clumps or satellite lesions near the cancer lesion. (B) Type II residual cancer. Two residual cancer lesions can be seen (arrows), and there is fibrotic change between the lesions. (C) Type III residual tumor. Solitary residual lesion (C1, arrow) and satellite lesion 1.5 cm away from the main lesion (C2, arrow) can be seen (hematoxylin and eosin stain; original magnification, ×40).