The distribution patterns of biatrial myxomas.

Biatrial myxomas are extremely rare, and by 1970 only three of eight attempts at removal had been successful. Another successful removal, the difficulty of establishing the biatrial nature of a myxoma by echocardiography, and a summary of the distribution patterns of biatrial myxomas are presented here. In more than 50% of patients, both pedicles grew into separate atrial chambers from a common location in the atrial septum. The surgical implications are discussed.