9090/0 Struma ovarii, NOS


Definitions

Ovary
ICD-O-3 topography code: C56

Amature teratoma of the ovary characterized by the presence of aberrant thyroid tissue that shows morphologic features identical to thyroid adenoma or carcinoma. Patients may present with abdominal mass and unusual symptoms due to thyrotoxicosis, or Meigs syndrome (ascites and pleural effusion).