title: A not so rare but unclassified type of interatrial septal defect: interatrial defect at the lower most portion of the septum.
mesh_terms: D000293:Adolescent; D000328:Adult; D000790:Angiocardiography; D006328:Cardiac Catheterization; D006332:Cardiomegaly / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006337:Heart Murmurs; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male; D013536:Suture Techniques