title: Aneurysm of the interatrial septum occurring as an isolated anomaly.
abstract: We report a case of aneurysm of the atrial septum occurring as an isolated abnormality in a patient with atypical chest pain. Apical two-dimensional echocardiography demonstrated phasic bulging of the fossa ovalis region of the atrial septum into the right atrium. Biplane cineangiography confirmed the presence of a large septal aneurysm in an otherwise normal heart. The incidence, pathogenesis, and complications of this unusual anomaly are briefly discussed.
mesh_terms: D000328:Adult; D002932:Cineangiography; D004452:Echocardiography; D006322:Heart Aneurysm / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006346:Heart Septum / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male