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Updated: Sep 28, 2026

The Pocket-Creation Procedure of Endoscopic Submucosal Dissection for Large Rectal Laterally Spreading Tumors
Published on: February 13, 2026
Endoscopic ultrasound and endoscopic mucosal resection for rectal cancers and villous adenomas
Nuzhat A Ahmad1, Michael L Kochman, Gregory G Ginsberg
1Division of Gastroenterology, Department of Medicine, University of Pennsylvania Cancer Center, University of Pennsylvania Medical School, 3 Ravdin, 3400 Spruce Street, Philadelphia, PA 19104, USA.
Abstract:
EUS is the most accurate tool for local staging of rectal carcinoma. In addition to providing accurate T- and N-stages, EUS allows assessment of the internal and external anal sphincters. Accurate endosonographic staging directs the optimal method of management of rectal carcinoma, type of resection, and candidacy for neoadjuvant therapy. EMR may be applied to large rectal adenomas as an alternative to surgical resection in selected patients. EUS is important in discriminating lesions suitable for EMR.
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