대한흉부영상의학회 Korean Society of Thoracic Radiology

Discussion

Diagnosis With Brief Discussion

Diagnosis

Mature teratoma in posterior mediastinum

Radiologic Findings

Brief Review

In this case, CT shows areas of inhomogenous attenuation including fat, soft tissue and calcium in a large well-marginated mass in
posterior portion of thorax. These are strongly suggestive findings of mature teratoma.
Mediastinal mature teratomas manifest as unilateral, sharply marginated, lobulated, heterogenous masses. CT reveals fluid-containing
(cystic) areas in 88% of cases. 85% included multilocular cystic areas separated by thin-tissue septa. CT frequently reveals fat (76%) and
calcium(53%) within the lesion (1). Most mediastinal mature teratomas arise in the anterior mediastinum. 3% were in the posterior mediastinum in one series, and multicompartmental extension was seen in 13% of tumors (1).

References

Moeller KH, Rosado-de-Christenson ML, Templeton PA. Mediastinal mature teratoma: imaging features. AJR 1997;169:985-990

Keywords

Mediastinum, Benign tumor,