NCIt synonyms : Thymic Carcinoid; Carcinoid Tumor of the Thymus; Thymus Carcinoid; Carcinoid Tumor of Thymus; Thymus Carcinoid Tumor; Thymic Carcinoid Tumor; Thymic Neuroendocrine Tumor;
NCIt definition : A well-differentiated neuroendocrine neoplasm that arises from the thymus and is often
associated with Cushing syndrome. Two morphologic subtypes are recognized: grade 1
(G1-typical carcinoid tumor) and grade 2 (G2-atypical carcinoid tumor). Grade 2 neuroendocrine
tumors have a more aggressive clinical course.;