Stage IV Duodenal and Ampulla of Vater Neuroendocrine Tumor AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage IV includes: Any T, Any N, M1. M1: Distant metastasis. (AJCC 9th ed.)

**Synonyms:** - Stage IV Duodenum and Ampulla of Vater Neuroendocrine Tumor AJCC v9