Arterial tortuosity syndrome.

Arterial tortuosity syndrome (ATS) is a rare, autosomal recessive, connective tissue disorder. It causes elongation and tortuosity of large and medium-sized arteries with consequent dilatation and/or stenosis. Other features of ATS include: skin/joint laxity, hernia formation, distinct facial features, cardiac valvular regurgitation and other cardiac abnormalities.