label: digestive system neuroendocrine neoplasm
label_lc: digestive system neuroendocrine neoplasm
description: A neoplasm with neuroendocrine differentiation arising from the digestive system. It includes neuroendocrine tumors (well-differentiated endocrine tumors or carcinoid tumors and well differentiated endocrine carcinomas) and neuroendocrine carcinomas (poorly differentiated neuroendocrine carcinomas, small cell carcinomas, and large cell neuroendocrine carcinomas).