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FIG 3. Case 4: 10-year-old boy being treated with CSA for bone marrow transplantation for acute lymphocytic leukemia. Shortly before imaging, the patient had two episodes of focal seizures and acute hypertension coincident with seizure activity. The serum CSA level was normal at the time the seizures occurred. Before the day of imaging, the patient had been normotensive.
A, Axial proton density–weighted image.
B, Axial T2-weighted image at same level.
C, FLAIR image at same level as A and B reveals cortical T2 hyperintensity in a gyral pattern bilaterally in the occipitoparietal lobes (arrows).
D, Axial FLAIR image, superior to A, suggests additional subtle cortical hyperintensity along gyri of the left parietal and posterior frontal lobes (arrows). This type of subtle cortical involvement was given a severity rating of 1 (mild disease).
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