Resection of multiple rectal carcinoids with transanal endoscopic microsurgery: Case report

Figure 1 Ultrasound image, surgical specimens and pathological image of the carcinoids. A: Transrectal ultrasound image showing two hypoechoic nodules (arrow), 0.5 cm and 0.72 cm in maximum diameter (lesions 1 and 2, respectively), confined to the submucosal layer of the rectal wall; B: Surgical specimens of the three lesions (two carcinoids, specimen 1 and 2; and one scar site with residual tumor, specimen 3); C: The pathological image revealing neuroendocrine tumor cells within the submucosal layer (hematoxylin and eosin, × 100).