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847640.fig.001b
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Figure 1: The endoscopic tunnelling submucosal resection procedure. (a) A submucosal tumor was found in esophagus (26 cm from incisors). (b) After mucosal injection, a submucosal tunnel (about 5 cm long) was created by ESD technique. (c) The tumor was successfully exposed in the tunnel. (d) Tumor resection was being carried out in the tunnel. (e) The mucosal incision site was sealed by hemostatic clips. (f) The resected specimen was 1.5 cm × 2.0 cm.