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Incomplete resection using endoscopic mucosal resection (EMR). (A) Conventional endoscopic view showing a carcinoid tumour in the rectum; (B) Endoscopic ultrasonography (EUS) image showing the lesion in the muscularis propria layer; (C) Snaring after submucosal injection; (D) Remnant carcinoid tumour on post-EMR ulcer (red arrow).
