title: [Idiopathic enlargement of the right atrium].
abstract: In a 3 year old male patient with a very rare congenital enlargement of the right atrium the diagnosis was made only because of an occasional chest X-ray film. These dilated right atria rarely cause symptoms, but in rhythmic disorders or thrombosis they can be life threatening. The differential diagnoses of this entity are listed.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000209:etiology; D006332:Cardiomegaly / Q000150:complications / Q000151:congenital* / Q000000981:diagnostic imaging; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006325:Heart Atria / Q000002:abnormalities; D006801:Humans; D008297:Male; D011859:Radiography; D013927:Thrombosis / Q000209:etiology
vernacular_title: Idiopathische Vergrösserung des rechten Vorhofes.