There are large arteriovenous malformations seen in the left parietal lobe parasagittal in location with multiple signal void vessels draining into the vein of Galen and straight sinus. Vein of Galen aneurysm is seen in the cistern of velum interpositum.
The main arterial blood supply is from the left anterior cerebral artery.
Hydrocephalus with significant intraventricular hemorrhage in both lateral ventricles extending into the third and fourth ventricles.
Mucosal thickening of all paranasal sinuses is seen, consistent with pansinusitis.