A 4-day-old female infant had a high-pitched cry in the nursery. Her delivery had been uncomplicated; the mother's prenatal course had been uneventful. On phsyical examination, the infant was normal except for the high-pitched cry.
A computed tomographic (CT) examination (Fig 1 and 2) was performed to evaluate the possibility of CNS abnormality. This was followed by a carotid arteriogram (Fig 3 and 4).