OrphaNet reference

Thymoma 

May Cause

Anterior mediastinal lesion

Calcified mediastinal mass

Cardiac or pericardial neoplasm or cyst

Indistinct heart border on frontal chest radiograph

Posterior mediastinal lesion

Right anterior cardiophrenic angle lesion

Soft-tissue mediastinal mass

Solitary thoracic calcification

Superior mediastinal mass

Superior vena cava syndrome

Third mogul sign

Thymic enlargement

Water-attenuation mediastinal lesion

Wide mediastinum

Wide superior mediastinum in an infant or child