8585/3 Thymoma, atypical, malignant



Definitions

Thymus
ICD-O-3 topography code: C37
ICD10: C37
           

Also known as well-differentiated thymic carcinoma, atypical thymoma, or epithelial thymoma, this type of thymoma displays morphologic characteristics of a well-differentiated carcinoma. The majority of cases occur in the anterior mediastinum as Masaoka stage II or stage III tumors. It is almost always invasive, it recurs frequently, and metastasizes in approximately 20% of the cases.