Massive hiatus hernia mimicking a left atrial mass.

Echocardiography is the investigational tool of choice for identifying cardiac masses. However, extracardiac masses may lead to a misdiagnosis. We present a unique case of a massive hiatus hernia in a 93 year-old woman, compressing on the left atrium, mimicking a left atrial mass. Echocardiographic features suggestive of a hiatus hernia are discussed.