Subvalvar congenital mitral stenosis.
D002648:Child; D002675:Child, Preschool; D002815:Chordae Tendineae / Q000002:abnormalities; D004695:Endocardial Fibroelastosis / Q000150:complications; D005260:Female; D006330:Heart Defects, Congenital; D006343:Heart Septal Defects / Q000150:complications; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000150:complications; D008946:Mitral Valve Stenosis; D010210:Papillary Muscles / Q000002:abnormalities; D014683:Vena Cava, Superior / Q000002:abnormalities