The clinical presentation and magnetic resonance imaging characteristics of an infant with idiopathic orbital inflammation.

Idiopathic orbital inflammation is rare in the pediatric population, particularly infants. It can be mistaken either for orbital infection or malignant tumors. We report the case of a 9-month-old previously healthy white boy who presented with right upper eyelid swelling. Magnetic resonance imaging revealed an abnormal T2-hypointense enhancing lesion within the extraconal superior right orbit.