Figure 3: (a) Image of carcinoid tumor. (b) After submucosal injection. (c-1) Mucosal incision in the vicinity of the tumor. (c-2) Mucosal incision away from the tumor. (d-1) Poor lifting after re-injection into the submucosal layer. (d-2) Good lifting after re-injection into the submucosal layer. (e-1) Snaring into the shallow submucosal layer. (e-2) Snaring into the deep submucosal layer.