Review Article Endoscopic Submucosal Dissection for Large Colorectal Tumor in a Japanese General Hospital

Copyright © 2013 Ken Ohata et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Background and Aims. Endoscopic submucosal dissection (ESD) is not widely used in large colorectal lesions because of technical difficulty and possible complications. We aimed to examine the efficacy and safety of ESD for large colorectal neoplasms. Patients and Methods. During the past 5 years, 608 cases of colorectal neoplasm (≧20mm) were treated by ESD. They were divided into Group A (20–49mm, 511 cases) and Group B (≧50mm, 97 cases). Results. The average age, lesion size, and procedure time were 67.4 years, 30.0mm, and 60.0min in Group A, and they were 67.1 years, 64.2mm, and 119.6min in Group B. En bloc resection rates were 99.2 % and 99.0 %