Jejunal and Ileal Neuroendocrine Tumor by AJCC v9 Stage

**Semantic type:** Neoplastic Process

**Definition:** A term that refers to the staging of jejunal and ileal neuroendocrine tumors, based on the American Joint Committee on Cancer (AJCC) v9 staging guidelines. This staging system applies only to well-differentiated tumors of the jejunum/ileum (NET G1, G2, and G3). It does not apply to carcinoma of the jejunum and ileum, including neuroendocrine carcinoma and mixed adenocarcinoma-neuroendocrine carcinoma, and neuroendocrine tumors of the duodenum and ampulla of Vater. (from AJCC 9th Ed.)

**Synonyms:** - Jejunum and Ileum Neuroendocrine Tumor by AJCC v9 Stage