label: Duodenal and Ampulla of Vater Neuroendocrine Tumor pN1 TNM Finding v9
label_lc: duodenal and ampulla of vater neuroendocrine tumor pn1 tnm finding v9
description: Duodenum or ampulla of Vater neuroendocrine tumor with involvement of regional lymph node(s). (from AJCC 9th Ed.)