Endoscopic submucosal dissection for undifferentiated-type early gastric cancer: Do we have enough data to support this?

Figure 1 Absolute and expanded indication for endoscopic mucosal resection and endoscopic submucosal dissection for early gastric cancer. SM1: Tumor invasion into the upper third of the submucosa (≤ 500 μm); SM2: Tumor invasion into the mid-third of the submucosa (> 500 μm). EMR: Endoscopic mucosal resection; ESD: Endoscopic submucosal dissection.

Figure 2 Treatment algorithm for undifferentiated type early gastric cancer according to depth of invasion, tumor size, ulceration, and lymphovascular invasion. EGC: Early gastric cancer; ESD: Endoscopic submucosal dissection; LVI: Lymphovascular invasion.