Pericardial tamponade on radiograph and CT

A patient presented to the emergency room with dyspnea. A chest radiograph (A) shows cardiomegaly and widened mediastinum (arrow). Image B shows an enlarged superior vena cava (arrowhead) and mediastinal adenopathy (arrow). Image C shows compression of the right ventricle (arrow) and a large malignant effusion (arrowhead). Cardiac catheterization confirmed tamponade physiology.