Seaweed floating in the pericardium: a rare case of primary dedifferentiated liposarcoma.

Primary cardiac tumors are uncommon and primary liposarcoma of the pericardium is extremely rare. We describe the case of a 55-year-old Caucasian woman without significant medical history, who presented with 3weeks complain of dyspnea, peripheral edema, and gain weight. Echocardiography revealed a huge pericardial mass confirmed by computed tomography and by magnetic resonance.