May Cause

Middle mediastinal lesion

Pleural effusion with disease in thorax

Posterior mediastinal lesion

Superior mediastinal mass

Superior vena cava syndrome

Wide mediastinum

May Be Caused by

Aortic transection

Arterial tear

Malpositioned vascular catheter with vessel injury

Penetrating trauma

Sternal fracture

Surgery

Venous tear

Vertebral fracture