label: Duodenal and Ampulla of Vater Neuroendocrine Tumor pNX TNM Finding v9
label_lc: duodenal and ampulla of vater neuroendocrine tumor pnx tnm finding v9
description: Duodenum or ampulla of Vater neuroendocrine tumor in which regional lymph nodes cannot be assessed. (from AJCC 9th Ed.)