Full-thickness excision using transanal endoscopic microsurgery for treatment of rectal neuroendocrine tumors

Figure 3 Full-thickness excision of an unobtrusive rectal neuroendocrine tumor using transanal endoscopic microsurgery. A: The unobtrusive tumor found by trans-rectal ultrasound and marked by thread; B: The defect after full-thickness excision; C: Completion of suturing of the rectal wall; D: The neuroendocrine tumor removed completely with safe surgical margins.