287173.fig.007a
(a)
287173.fig.007b
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287173.fig.007c
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Figure 7: (a) Colonic tumor, 0-IIa, 40 mm in diameter, located in the ascending colon. (b) The ulceration after endoscopic submucosal dissection (ESD). ESD was performed without perforation and coagulation of the muscle layer. (c) Abdominal computed tomography 2 days after ESD revealed wall thickness on the whole ascending colon.