A Case of a Large Malignant Pericardial Effusion on Computed Tomography Without Electrocardiographic Gating.

A 67-year-old female was admitted due to dyspnea. A computed tomography (CT) disclosed a suspicious pulmonary mass and a pericardial effusion. A transthoracic echocardiogram confirmed a large-volume circumferential pericardial effusion.