Ebstein's anomaly in siblings: an original observation.

Siblings, a 26-year old male and a 31-year old female, were found do have Ebstein's anomaly. Ebstein's anomaly is characterized by a downward displacement of the tricuspid valve into the right ventricle due to anomalous attachment of the tricuspid leaflets. Echocardiography is the method of choice to diagnose Ebstein's anomaly on its own or in association with other heart defects. Complications such as right ventricular failure, infective endocarditis, and paradoxical embolism can occur. Ebstein's anomaly diagnosed in adult life is a benign and stable disease, particularly if the patient is asymptomatic. These cases may represent a familial form of Ebstein's anomaly.