<unk>  is a rare congenital heart disease described by<unk>  in 1963. In the complete form, four left-sided defects are present: * Supravalvular mitral membrane (SVMM) * Parachute mitral valve * Subaortic stenosis (membranous or muscular) * Coarctation of the aorta Of these four defects, supravalvular mitral membrane (SVMM) is the first to occur, and triggers the development of the other three defects. Partial complexes, or forme fruste, have also been described. The definition is often expanded to include lesions of the left side of the heart not originally ascribed to<unk> , including mitral and aortic valvular lesions and supravalvular aortic stenosis. The term parachute mitral valve stems from the morphological appearance of the valve; that is to say, the mitral valve leaflets appear as the canopy of the parachute, the chordae as the strings and the papillary muscle as the harness.
Shone's syndrome
Frey's syndrome
Wilkinson's syndrome
Brown's syndrome
Weaver syndrome
Horner's syndrome
Winter-over syndrome
Nance–Horan syndrome