Narrowing of<unk> , most commonly at ductus arteriosus insertion site just distal to left subclavian artery
Less common: diffuse arch hypoplasia with long segment of narrowing proximal to left subclavian
~7% of live births with congenital heart disease 
Associated with bicuspid<unk> c valve (50%), VSD, PDA
Less common: diffuse arch hypoplasia with long segment of narrowing proximal to left subclavian
Coarctation of the aorta
THE MISFITS [4]
Aortic stenosis
Trauma
Ebstein anomaly
Heart
Arrhythmogenic right ventricular dysplasia
Congenital heart disease