Spontaneous Right Atrial Dissection and Congenital Right Atrial Aneurysm.

Right atrial (RA) wall dissection and congenital RA aneurysm is a very rare abnormality. This is may be the first reported case of a spontaneous dissection of the RA wall without rupture, in addition to the presence of a congenital RA aneurysm. The patient, a 4-year-old boy, was successfully treated with RA aneurysm resection under cardiopulmonary bypass. Although the diagnosis of RA dissection poses a challenge even when the advanced multimodality imaging approaches are applied, transthoracic and contrast echocardiography are most valuable tools for making accurate diagnosis.