Importance of histological evaluation in endoscopic resection of early colorectal cancer

Figure 2 A submucosally invasive cancer with identifiable muscularis mucosae. A: Submucosal invasion (black box) with partial destruction of the muscularis mucosae was detected by histological examination of hematoxylin and eosin stained sections; B: The muscularis mucosae was identified. The depth of submucosal invasion was 500 μm (black arrow).