%0 Case Reports %T MRI detection of occult venous anomalies in a patient with Williams syndrome: a case report. %A Davis TS %A Epelman MS %A Madueme PC %A Bender KS %A Dadlani GH %J Cardiol Young %V 30 %N 4 %D Apr 2020 %M 32102714 %F 1.023 %R 10.1017/S104795112000030X %X Williams syndrome is a multisystem, congenital disorder which is commonly associated with arterial stenoses: supravalvar aortic stenosis and peripheral pulmonary artery stenosis. Venous abnormalities have not been previously reported in children with Williams syndrome. We present a case of a 3-year-old girl with Williams syndrome and diffuse venous ectasia as detected by MRI.