ovarian neuroendocrine neoplasm (Monarch Disease Ontology entry MONDO_0002481) is an epithelial neoplasm with neuroendocrine differentiation that arises from the ovary. It includes carcinoid tumor, small cell carcinoma pulmonary type, and large cell neuroendocrine carcinoma. Also known as: neuroendocrine neoplasm of ovary, neuroendocrine neoplasm of the ovary, neuroendocrine tumor of ovary, neuroendocrine tumour of ovary, ovary NET, ovary neuroendocrine neoplasm, ovary neuroendocrine tumor, ovary neuroendocrine tumor, well differentiated, low or intermediate grade.