A term that refers to the staging of a rectal neuroendocrine tumor, following the rules of the TNM AJCC v8 classification system. This staging system applies to rectal ""carcinoid"" tumors (neuroendocrine tumor G1 and G2, and rare-well differentiated G3). High-grade neuroendocrine carcinomas and mixed adenoneuroendocrine carcinomas of the rectum are not staged using this staging system. (from AJCC 8th Ed.) [from
NCI]