title: [Classification and operation of subvalvular lesions in mitral stenosis. Comparison of left ventriculography and echocardiography with operative findings].
mesh_terms: D000328:Adult; D000368:Aged; D004452:Echocardiography / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography