Which is the most common primary malignancy of hea ?

Myxoma is the most common primary neoplasm of hea (30- 50%). 75% of cardiac myxomas develop in the left atrium. Histologically, it is composed of a myxomatous stroma with large stellate cells mixed with multiWnuleated cells and covered with endothelium. Unusual benign tumors of hea are fibroma, lipoma, angioma, teratoma and cysts. Reference: Schwa'z Principles of Surgery 9e chapter 21.