“…Accordingly, 20 patients (9.3%) were not operated due to conservative treatment/on a follow-up/waiting for surgical operation/operation refusal/sudden death, and loss of surgical opportunity, [12,13,15,21,22,25,26,29,41,42,45,[48][49][50][51][52]57,66] while 196 patients (90.7%) received a total of 198 surgical operations as follows: non-mitral valve operations (n=70, 35.4%) [3,11,14,26,30,33,36,39,46,61] and PMV: parachute mitral valve; * One of the asymptomatic patients developed dyspnea later. [41] [39,43,45,48,53,62] • Anterolateral (n=14) [39,65] • Inferolateral [56] • Left (n=1) [32] • Central [54] • Apical [63] Supravalvular mitral ring 10 [9,10,38,39] 3.5 11 [4,7,…”