Atrial septal aneurysm.
D000328:Adult; D054087:Atrial Septum / Q000000981:diagnostic imaging; D005260:Female; D006322:Heart Aneurysm / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D014463:Ultrasonography