Fig. 1

a, b, c, and d are brain MR DWI sequences of case 1, showing symmetrical diffuse hyperintensities in both supratentorial cerebral hemispheres, mainly involving the cortex and the basal ganglia. The patient was ultimately diagnosed with fulminant cerebral edema, with a rapid decline in consciousness to a GCS score of 3 within a short period. Despite stabilizing vital signs through aggressive treatment, the patient ultimately developed severe cognitive impairment and residual sequelae of limb paralysis