287173.fig.001a
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287173.fig.001b
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287173.fig.001c
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287173.fig.001d
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287173.fig.001e
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Figure 1: Strategy for endoscopic submucosal dissection. (a) 0-IIa tumor, 30 mm, located in the rectum. First, the tumor and its margin were observed carefully. (b) Injection was performed at the anal (distal) side of the tumor. (c) A partial circumferential mucosal incision was made. (d) Submucosal dissection was performed. (e) The tumor was resected en bloc. (f) Resected specimen. Histopathological diagnosis: intramucosal cancer, margin: negative.