There is no flow-limiting stenosis or aneurysm of the anterior circulation.
The dural venous sinuses are patent.
1. Interval ventricular catheter placement with tip along the medial aspect of the right frontal horn lateral ventricle and interval decrease in right lateral ventricular size. Mildly enlarged left lateral ventricle is stable.
2. Evolving intraventricular hemorrhage.
3. Posterior fossa AVM as detailed above.
Study description: Vascular^CTA_HEADNECK_UNDER15Y (Child)