CTICasesMature Mediastinal Teratoma
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Imaging findings
Chest radiography demonstrated a large mass in the basal right hemithorax effacing the right cardiac margin, containing a focal calcification. CT confirmed an anterior mediastinal mass with areas of low attenuation consistent with sebum and a focal calcification/ossification resembling a tooth. Pathologic examination showed hair and sebum, characteristic of a mature teratoma.
Key takeaways
Mature mediastinal teratomas typically present as anterior mediastinal masses with heterogeneous composition, including fat (sebum) and calcification (tooth or bone). These imaging features are diagnostic and highly characteristic.
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