Myxoma is a benign growth constituting nearly 50% of all primary cardiac tumors. It is important because in can be abolished by surgical therapy and is usually fatal if unrecognized and untreated. Primary cardiac tumors are uncommon in all age group. In contrast, tumors metastatic to the heart are significantly more common. The diagnosis is made by echocardiography and cardiac angiography. Recently a wider use of echocardiogram as the screening test of valve lesions can be expected to increase the number of myxomas found preoperatively. We report the two cases of left atrial myxomas which were removed successfully by surgery in the thoracic and cardiovascular surgery department, Marryknoll Hospital.