Familial atrial myxoma.

Two siblings 14 years apart were found to have atrial myxomas. The brother's right atrial myxoma was found at age 21 and his sister's left atrial myxoma, with peripheral cerebral and coronary aneurysms, at age 30. Both tumors were excised successfully. These findings support previous reports suggesting that atrial myxoma may be familial. Echocardiography can be used effectively in the diagnosis of atrial myxoma, detection of its possible recurrence, and screening other members of the family.