Mass Encroaching on the Right Atrium: An Unusual Echocardiography Finding

Interesting extracardiac findings can incidentally be found on transthoracic echocardiography such as a right hemidiaphragmatic eventration which can rarely be seen compressing the right atrium. Careful echocardiographic interpretation combined with clinical correlation is essential to distinguish extracardiac pseudo-masses mimicking true intracardiac masses.