Clinical question: Please evaluate patient with malignancy and recent increase intracranial pressure/hydrocephalus. Signs and symptoms: As above. Nonenhanced head CT:Diffuse low-attenuation of bilateral cerebellar hemispheres is consistent with extensive edema. There is near complete effacement of cerebellar and vermian for your, complete effacement of bilateral cerebellopontine cisterns, compressed fourth ventricle and crowding of the fragment magnum as well as effacement of the quadrigeminal plate cistern are all results of intracranial increased pressure in the posterior fossa. This appearance is not significantly different than prior head CT from 8 -- 22 -- 11. Prior MRI is suggestive of cerebellitis.Images through the supratentorial space demonstrate shunted lateral ventricles with significant interval decrease in their size since prior study. Minimal amount of blood in the dependent portion of right occipital horn is minimally larger than prior study and likely result of precipitation. There is better visualization of supratentorial cortical sulci due to reduction in the size of ventricles. No evidence of parenchymal hemorrhage with edema. No evidence of midline shift.
1.Significant interval decrease in the size of supratentorial ventricular system. Minimal blood in the dependent right occipital horn.2.Extensive cerebellar edema and resultant mass effect similar to prior study.3.No evidence of acute new findings.