Current status of endoscopic resection for small rectal neuroendocrine tumors

Figure 4 Endoscopic salvage resection in a scar after endoscopic resection of rectal neuroendocrine tumor. A and B: Previous polypectomy showed a positive margin on histology. The scar exhibited poor lifting with submucosal injection; C and D: After circumferential incision, traction was applied with clips and a loop; E and F: During dissection at the scar site, the circular muscle layer was carefully removed to perform intramuscular dissection. Histological analysis showed no residue tumor.