Shone complex -Shone complex is a rare combination of subvalvular aortic stenosis, supravalvular mitral membrane, parachute mitral valve, and coarctation of aorta. -A parachute mitral valve occurs when all the chordae arise from a single, fused papillary muscle. -This abnormality is associated with mitral stenosis of various degrees and with Shone syndrome.
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