Ampullary neuroendocrine tumor diagnosed by endoscopic papillectomy in previously confirmed ampullary adenoma

Figure 2 Endoscopic papillectomy. Following submucosal injection of 1:10000 diluted epinephrine, snaring papillectomy was performed (A), finally papillectomy induced ulceration is noted without complications (B), following the first papillectomy, a resected papillary roof is noted (C), A whitish and round mass-like lesion was resected by a subsequent second papillectomy (D).