family hx of Chiari I malformations The CSF spaces are appropriate for the patient's stated age with no midline shift. The cerebellar tonsils extend approximately 6 mm below the level of the foramen magnum. CSF flow is present at the foramen magnum. There is no evidence for ventriculomegaly.No abnormal enhancing mass lesions are appreciated intracranially. No intracranial hemorrhage is identified. No edema is identified within the brain parenchyma.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses are clear. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.
Findings are compatible with Chiari I malformation. There is no significant impediment to CSF flow appreciated and no evidence for ventriculomegaly.