Clinical question: Seizure, history of CVA. Signs and symptoms: Seizures. Nonenhanced head CT:There is no evidence of intracranial hemorrhage, edema, mass effect or midline shift or hydrocephalus.The cortical sulci, ventricular system and all CSF cisterns remain within normal.Subtle small foci of nonspecific low attenuation in the periventricular white matter as was noted on prior exam. Comparison is not possible due to the sensitivity of CT for detection of findings on prior MRI. There is however a single focus of low-attenuation in the right sub-insular cortex which was not present on prior MR exam. This finding could represent a corner infarct. The appearance of this lesion is suggestive of an old stroke.
1.No evidence of acute intracranial findings.2.Partial visualization of nonspecific periventricular low-attenuation asthma noted on prior MRI.3.A single focus of low-attenuation in the right basal ganglia which was not identified on prior study.