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Some of the MRI and CT findings during partial status epilepticus mimicked those of acute ischemic stroke: DWI and T2-weighted MRI showed cortical hyperintensity with a corresponding low apparent diffusion coefficient, and CT showed an area of decreased attenuation with effacement of sulci and loss of gray-white differentiation. However, the lesions did not respect vascular territories, there was increased signal of the ipsilateral middle cerebral artery on MRA, and leptomeningeal enhancement appeared on postcontrast MRI. On follow-up imaging, the abnormalities had resolved, but some cerebral atrophy was present. The radiologic characteristics of status epilepticus resemble those of ischemic stroke but can be differentiated based on lesion location and findings on MRA and postcontrast MRI. The MRI abnormalities indicated the presence of cytotoxic and vasogenic edema, hyperperfusion of the epileptic region, and alteration of the leptomeningeal blood-brain barrier. These changes reversed, but they resulted in some regional brain atrophy. |
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blood brain barrier
CAT scan,abnormal
gadolinium
hyperperfusion syndrome
meningeal enhancement
MRI
MRI,abnormal
MRI,abnormal,seizure causing
MRI,ADC maps
MRI,angiography
MRI,contrast enhanced
MRI,diffusion weighted
MRI,disappearing lesion on
seizure
status epilepticus
sulcal effacement
temporal lobe,status
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