Male 60 years old Reason: stroke? Mass lesion? History: R sided weakness. Limited evaluation demonstrates no evidence of intracranial hemorrhage or mass. There is hyperintensity on the diffusion and isointense signal on the ADC bilaterally in the prefrontal gyri, hippocampal, and left mesial temporal lobe. There is no convincing T2 signal to suggest that this is T2 shine through. These areas of apparent restriction do not reflect vascular territories. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. There is a large mucous retention cyst in the left maxillary sinus, occupying approximately half the sinus. The partially evaluated orbits, skull, and scalp soft tissues are grossly unremarkable.
Findings of multiple areas of apparent diffusion restriction on this limited MRI may reflect the patient's recent toxic exposure, possibly representing early leukoencephalopathy. Recommend repeat study to fully evaluate when clinically possible.