Sporadic Hemiplegic Migraine with Seizures and Transient MRI Abnormalities
Figure 1
MRI of the patient at the time of presentation. (a) Transverse fast spin-echo T2-weighted MR images through the level of the sylvian fissures show diffuse cortical swelling and mild cortical hyperintensity of the left cerebral hemisphere. These findings are most likely caused by cortical edema. (b) Coronal diffusion-weighted MR image through the level of the basal ganglia shows diffuse high signal of the cortex of the left cerebral hemisphere. (c) Diffusion-weighted images show no evidence of water restriction in the left hemisphere. (d) Postcontrast study shows that the area does not enhance on T1-weighted images after contrast medium.
