A 34-year-old man was referred to our institution after an echocardiography performed at another center because of tachycardia (atrial flutter), which showed heterogeneous pericardial mass infiltrating the right chambers. Thoracic computed tomography (CT) and cardiac magnetic resonance (MR) imaging were performed for more accurate assessment of the exact tumor location, size, and potential infiltration of other cardiac and mediastinal structures. CT () and MR imaging () confirmed an 8-cm ill-defined heterogeneous enhancing pericardial mass infiltrating the anterior and superior walls […]