Aneurysm of the left atrium.
D000293:Adolescent; D006328:Cardiac Catheterization; D003937:Diagnosis, Differential; D005260:Female; D006322:Heart Aneurysm / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery; D006325:Heart Atria; D006326:Heart Auscultation; D006338:Heart Neoplasms / Q000175:diagnosis; D006801:Humans; D008479:Mediastinal Neoplasms / Q000175:diagnosis