title: Mitral regurgitation associated with secundum atrial septal defect.
mesh_terms: D000293:Adolescent; D000328:Adult; D006332:Cardiomegaly / Q000473:pathology; D002648:Child; D006344:Heart Septal Defects, Atrial / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve / Q000473:pathology; D008944:Mitral Valve Insufficiency / Q000473:pathology*