Feasibility of Endoscopic Submucosal Dissection: A New Technique for En Bloc Resection of a Large Superficial Tumor in the Colon and Rectum
Figure 2
A case of ESD failure. (a) Residual mucosal lesion after EMR located in the hepatic flexure of the colon. (b) Non-lifting sign was positive after submucosal injection. (c) Submucosal layer was clearly visualized after incision. (d) Severe submucosal fibrosis existed under the lesion. ESD procedure was suspended to avoid perforation.