<unk>  (also known as<unk> <unk><unk>  is a rare type of non-atherosclerotic peripheral artery<unk> . It can present as claudication, critical limb ischemia or acute limb ischemia. The most commonly affected vessel is the popliteal artery. The cause is unknown. __TOC__
Adventitial cystic disease
Eustachian tube dysfunction
Patulous Eustachian tube
Cystic fibrosis
Tracheal agenesis
Vocal cord cyst
Tracheobronchopathia osteochondroplastica
Bronchomalacia