NCIt synonyms : Neuroendocrine Neoplasm of the Breast; Neuroendocrine Neoplasm of Breast; Breast Endocrine Neoplasm;
NCIt definition : A neoplasm that arises from the breast and is composed of cells exhibiting neuroendocrine
differentiation. It is classified as neuroendocrine carcinoma or neuroendocrine tumor
G1 and neuroendocrine tumor G2. Most cases are neuroendocrine carcinomas. Primary
neuroendocrine tumors in the breast are very rare.;