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Difficult scenarios encountered during colorectal full-thickness resection. A, Difficulty in navigating the sigmoid colon because of diverticulosis. B, Rectal subepithelial lesion (arrowhead) adjacent to the vagina (arrow) on endosonographic examination. C, Anal trauma upon insertion of the full-thickness resection device. D, Balloon dilation of anal stenosis. E, Luminal edema post resection. F, Use of an anchor device to facilitate grasping of lesion into cap.
