N1-SUPERVISEE Syndrome MASS Prolapsus de la valve mitrale - anévrysme aortique - vergetures - signes squelettiques; http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=99715 http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=FR&Expert=284963 false true false Orphanet France Syndrome MASS information scientifique et technique syndrome MASS