CT scan showing a pericardial effusion resulting in right ventricular (RV) collapse related to metastatic adenocarcinoma

An axial CT through the chest (A) shows a large pericardial effusion (arrow) with a collapsed right ventricle (dashed arrow) indicating tamponade. A subsegmental region of atelectasis is present (arrowhead). Image B is reformatted in the coronal plane and shows a large pericardial effusion (arrow), collapsed right ventricle (dashed arrow), and focal atelectasis (arrowhead).