Recurrent Pericardial Effusions and Intrapericardial Thrombi of Unknown Etiology.

This is a case of a 76-year-old male with an initial presentation consistent with idiopathic pericarditis. He presented repeatedly with recurrent pericardial effusions and intrapericardial thrombi of unknown etiology. Surgical evacuation of the thrombi was performed twice, and the second surgery demonstrated a cardiac tumour. Cardiac MRI and pathology were consistent with angiosarcoma. In cases of recurrent pericardial effusions and thrombi, we recommend a high index of suspicion for cardiac tumours. Further, we recommend early consideration of cardiac MRI or PET and early referral to imaging specialists and cardiac surgeons with experience in cardiac tumours.