<unk>  of the aortic<unk> , also known as the<unk>  of<unk> , is comparatively rare, occurring in about one person in every thousand.
When present, it is usually in either the right (65-85%) or in the noncoronary (10-30%)<unk> , rarely in the left (< 5%)<unk> . This type of<unk>  is typically congenital and may be associated with heart defects. It is sometimes associated with Marfan syndrome or Loeys-Dietz syndrome, but may also result from Ehlers-Danlos syndrome, atherosclerosis, syphilis, cystic medial necrosis, chest injury, or infective endocarditis.
If unruptured, this type<unk>  may be asymptomatic and therefore go undetected until symptoms appear or medical imaging is performed for other reasons.
Aneurysm of sinus of valsalva
Aortic intramural hematoma
Penetrating atherosclerotic aortic ulcer
Patent foramen ovale
Left ventricular aneurysm
Congenital stenosis of vena cava
Left ventricular thrombus
Ductus arteriosus aneurysm