[Echocardiographic findings in interatrial septal aneurysm, Chiari's network and tricuspid valve prolapse. An unusual association].

In this report we discuss the case of a 55-year-old female who underwent echocardiographic and Doppler studies for the presence of systolic murmur at physical examination, in which echocardiography showed the concomitant presence of an atrial septal aneurysm, a Chiari network and a tricuspid valve prolapse, a hypothetic association not previously described. The association of atrial septal aneurysm, tricuspid valve prolapse and Chiari network suggests the possibility of a connective disorder involving fibrous tissue of the heart and a concomitant anomalous development of the valves of the sinus venosus.