May Cause

Cardiomegaly in childhood

Heart failure in childhood

Large aortic arch

Large ascending aorta

Third mogul sign

Vascular abnormality of mediastinum

May Be Caused by

 Common

Atherosclerosis

Congenital aneurysm of coronary artery

 Uncommon

Connective tissue disease

Coronary artery dissection

Iatrogenic injury

Kawasaki syndrome

Marfan syndrome

Mucopolysaccharidosis

Mycotic aneurysm

Necrotizing arteritis

Rheumatic heart disease

Syphilis

Trauma