Duodenal and Ampulla of Vater Neuroendocrine Tumor pM1b TNM Finding v9

**Semantic type:** Finding

**Definition:** Duodenum or ampulla of Vater neuroendocrine tumor with microscopic confirmation of metastasis in at least one extrahepatic site (e.g., lung, ovary, nonregional lymph node, peritoneum, bone). (from AJCC 9th Ed.)

**Synonyms:** - Duodenum and Ampulla of Vater Neuroendocrine Tumor pM1b TNM Finding v9