Ultrasound evaluation of cystic intracranial lesions in the neonate.

Ultrasound detected cystic intracranial lesions in 18 infants. Lesions included porencephaly (6 infants), hydranencephaly (1 infant), a quadrigeminal cyst (1 infant), Dandy-Walker syndrome (1 infant), and cavum septi pellucidi and Vergae (9 infants). Cystic lesions of the infant brain can be delineated accurately with ultrasound and distinguished from normal ventricular structures.