Marked ventriculomegaly affecting the lateral ventricles with mild periventricular hypoattenuation. The third ventricle is effaced by an ill-defined mass with mixed internal density (predominantly hypodense with a hyperdense component posteriorly). Cerebral aqueduct and fourth ventricle are within normal bilateral. Bilateral frontal approach ventricular drains with the tip within each body of the lateral ventricle. A trace amount of extra-axial blood associated with the left drain.