Approach to the endoscopic resection of duodenal lesions

Figure 3 Non-ampullary duodenal carcinoid tumors. A 1-cm duodenal nodule was seen with a white lesion visible in or just below the mucosa, which was suspicious for a carcinoid tumor (A); A larger 1.5-cm subepithelial lesion was found elsewhere in the duodenum of the same patient (B); Bite-on-bite biopsies through the mucosal layer revealed white tissue that was able to be pathologically sampled confirming the diagnosis of a duodenal carcinoid (C).