label: Duodenal and Ampulla of Vater Neuroendocrine Tumor pM1 TNM Finding v9
label_lc: duodenal and ampulla of vater neuroendocrine tumor pm1 tnm finding v9
description: Duodenum or ampulla of Vater neuroendocrine tumor with microscopic confirmation of distant metastasis. (from AJCC 9th Ed.)