[Aortic and tricuspid valve involvement caused by myxoid degeneration associated with a severe mitral prolapse. Apropos of 2 patients undergoing a double valve replacement].

Idiopathic mitral valve prolapse due to severe myxoid degeneration may be associated with aortic and/or tricuspid valve disease of the same aetiology. These localisations, which usually give rise few symptoms, can be detected by echocardiography. Sometimes, however, they may give rise to serious valvular regurgitation requiring surgical correction at each diseased valve. The authors report two cases of "floppy" mitral valve prolapse, the first requiring mitral and tricuspid, and the second, mitral and aortic, valve replacement. These cases underline the value of especially by echocardiography, in view of their serious complications.