Extracranial Internal Carotid Aneurysm in a 10-Year-Old Boy Diagnosed via Ultrasound.

Background: Extracranial carotid aneurysms in children are extremely rare but carry a high mortality and morbidity. For pediatric patients, they are often complications of pharyngeal infections and surgical trauma but can also arise from congenital and inflammatory diseases. They have a wide range of presentation from an asymptomatic mass to a rapidly fatal hemorrhage.