fig1

Figure 1. Sequence for the pocket-creation method (PCM) of endoscopic submucosal dissection (ESD). (A) An initial mucosal incision is made away from the edge of the tumor after submucosal injection. (B, C) Creation of a submucosal pocket dissecting the submucosal tissue under the tumor. (D) Opening the pocket from the gravity side, up to beyond the tumor. (E) Dissection of the side opposite gravity in the same manner. (F) Completion of the ESD.