It has been reported that some patients have been misdiagnosed with Marfan's Syndrome, when in fact the correct diagnosis in their specific case was Congenital Heart Disease.
Congenital heart disease is mostly diagnosed during pregnancy. A doctor may pick up the condition during an ultrasound at 18-22 weeks of pregnancy. The diagnosis is confirmed after birth. Treatment depends on the case and severity. Some heart defects and minimal and resolve as the child grows up. Others require surgery shortly after birth.