Reason: Metastasis to Cerebellum History: Gait instability with known metastatic lung cancer Nonenhanced head CT:There is no detectable abnormality of the cerebellum or the vermis on this non-infused head CT. The fourth ventricle and the cerebellar volume is within normal limits. If concern for metastatic lesion persist recommend contrast MRI.Images through supratentorial space demonstrate no evidence of intracranial hemorrhage, edema, mass-effect, midline shift or hydrocephalus.Calvarium is intact.
Negative nonenhanced head CT.