digestive system neuroendocrine tumor, grade 1/2 colon neuroendocrine neoplasm neuroendocrine tumor of the colon, well differentiated, low or intermediate grade tumor NET of the colon A well differentiated, low or intermediate grade tumor with neuroendocrine differentiation that arises from the colon. colon neuroendocrine tumour MEDGEN:1617490 MONDO:0015067 carcinoid tumor of colon colonic NET NCIT:C135212 carcinoid tumour of colon neuroendocrine neoplasm of the colon colon neuroendocrine tumor GARD:0025057 UMLS:C4525742 epithelial tumor of colon