FIG 1. CT of previously healthy 5-year-old boy presenting with headache, disorientation, and somnolence is shown.

A and B, T1-weighted MR images of brain performed on the day of ictus show left periventricular hematoma with extension into atrium of adjacent left lateral ventricle. Note absence of blood within left occipital horn (arrow). Flow voids representing AVM feeding pedicles are present anteriorly within left basal ganglia.