Efficacy and safety of pretraction-assisted endoscopic submucosal dissection for treating rectal neuroendocrine tumors

Figure 1 Pretraction-assisted endoscopic submucosal dissection of a rectal neuroendocrine tumor. A: A 1-cm rectal neuroendocrine tumor was identified; B: The lesion was marked, and submucosal injections were performed; C: Before mucosal incision, traction was applied using dental floss and endoclips; D: Pretraction aided mucosal incision and exposed the submucosal plane, with superficial vessels clearly visible; E: The oral side mucosa was incised; F: Dissection proceeded from the anal side toward the oral side; G: The post-resection wound shows intact muscularis propria; H: An en bloc specimen was obtained.