Abstract:To compare the effect of endoscopic submucosal dissection (ESD) and endoscopic pedicle ligation with nylon rope or metal clip followed by electrical resection on postoperative hemorrhage for thick colorectal pedicle polyps, clinical data of patients undergoing endoscopic polypectomy in Jiangsu Province Hospital (The First Affiliated Hospital with Nanjing Medical University) from January 2018 to November 2022 were retrospectively collected, and the patients were divided into ESD group and pre-ligation group according to different treatment methods. Postoperative bleeding data of the two groups were compared and analyzed. A total of 265 patients were included, including 124 in ESD group and 141 in pre-ligation group. There were no significant differences in gender, age, polyp sites, polyp diameter or pedicle diameter between the two groups (P>0.05). The postoperative bleeding rate in the ESD group was significantly lower than that in the pre-ligation group [4.0% (5/124) VS 10.6% (15/141), χ2=4.126, P=0.042]. Compared with ESD group, more bleeding occurred in the left colon in the pre-ligation group, with statistically significant difference [40.0% (2/5) VS 93.3% (14/15), P=0.032]. The hospital stay was longer in the ESD group than that in the pre-ligation group (4.6±1.9 days VS 3.4±1.5 days, t=5.641, P<0.001). ESD is more effective than pre-ligation in reducing postoperative hemorrhage for coarse pedicle colorectal polyps, especially for those on distal colon.