Mediastinal teratoma with pericardial effusion

Case contributed by Pradosh Kumar Sarangi
Diagnosis almost certain


Dyspnea, occasional dry cough, chest discomfort for six months. No history of expectoration of sputum, hemoptysis or fever. No past history of tuberculosis or any other significant medical or surgical history.

Patient Data

Age: 45 years
Gender: Female

Coronal scanogram: Left hemithorax showing a mass lesion which does not project above the clavicle and descending thoracic aorta can be clearly seen through it .This goes in favor of anterior mediastinal mass. CT scan confirmed the findings.

A large well-marginated heterogenous mass lesion of approximate size 11.5 x 9.5 x 7.5 cm containing fat, fluid and soft tissue components noted in anterosuperior mediastinum. No calcific foci noted within. The lesion abuts arch of aorta, great vessels arising from arch of aorta, left pulmonary artery and anterolateral chest wall without any definite invasion. Also note the pericardial effusion. There is mild enhancement of soft tissue components.

Case Discussion

CT imaging in this patient is consistent with a mediastinal teratoma. Possible rupture should be suspected if there is associated pericardial effusion. The patient underwent FNAC of the lesion which came out to be immature teratoma.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.