2.3. Inclusion criteria
colorectal ESD, colorectal epithelial tumor, Tumor, fibrosis, colorectal ESD/EMR
ONCOLOGY, TUMOR, FIBROSIS
Patients will be included if they are aged ≥ 20 years, have an Eastern Cooperative Oncology Group Performance Status of 0 to 3, and have a colorectal epithelial tumor determined by colonoscopy to be an indication for ESD. Tumor size, morphology, circumferentially, and fibrosis are not required inclusion criteria. Lesions indicated for colorectal ESD will consist of those that require en bloc endoscopic resection and meet the 2014 colorectal ESD/EMR guidelines.