Headache, migraine No evidence of acute ischemic or hemorrhagic lesion.Multifocal bihemispheric high signal intensities especially subcortical white matter on FLAIR imaging were seen.These lesions are nonspecific. Differential diagnosis includes vasculitis, demyelinating and dysmyelinating disease. Clinical correlation is recommended.There is a large susceptibility artifacts on the right high parietal lobe.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, or restricted diffusion/acute ischemia. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
Multifocal bihemispheric subcortical high signal intensity lesions on FLAIR as described above.These are non specific lesions, with wide differential diagnosis including vasculitis, demyelinating disease and dysmyelinating disease, small vessel ischemic disease is less likely, clinical correlation is recommended.