77-year-old male with left lower extremity weakness x 3 days. Rule out CVA. Examination demonstrates no evidence of hemorrhage, edema, mass-effect, midline shift or hydrocephalus. The images through the supratentorial brain parenchyma are essentially within normal limits for patient of stated age of 77.Images through posterior fossa demonstrates normal morphology and density of the cerebellar hemispheres. Within the lower pons at the level of the pontomedullary junction a focal area of low-attenuation (axial image 6) in the right paramedian location is noted. This finding may represent a lacunar infarct however the possibility of volume averaging of CSF is considered and the cannot be entirely ruled out. Please correlate with clinical findings and if further evaluation is needed an MRI is recommended.
1.Unremarkable CT of brain in supratentorial brain parenchyma.2.Focal low density in the right aspect of the pons may present in a clean or an area of volume averaging with CSF as detailed.3.4.