Clinical Presentation

Severe congestive heart failure in a full-term neonate. Ultrasound examination of the head was obtained to rule out intracranial hemorrhage before the patient was placed on extracorporeal membrane oxygenation.

Further Work-up

(A,B) Coronal and sagittal sonograms of the brain demonstrate a large, ovoid, cystic structure in the midline just posterior to the corpus callosum, in the expected location of the quadrigeminal plate cistern (arrows). (C) Sagittal Doppler ultrasound and (D,E)