Computed tomography. (A, C) Cross section view. (B, D) Coronal view.|@|~(^,^)~|@|(A, B) Yellowish multiple subepithelial lesions at the rectum were noted. (C, D) Multiple rectal carcinoids were removed by endoscopic submucosal resection.|@|~(^,^)~|@|Pathologic findings of colonic NETs removed by ESD. (A) Multiple tumors are seen (H&E, scan view). (B) Tumor invades mucosa and upper submucosa (H&E, ×40). (C) Monotonous and regular tumor cells are arranged in trabecular and nesting pattern (H&E, ×100). (D) Tumor cells show strong and diffuse positivity for synaptophysin (immunohistochemical staining, ×100). NETs, neuroendocrine tumors; ESD, endoscopic submucosal dissection.

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