The ictal EEG recording shows diffuse high-voltage slow-wave paroxysms associated with periodic spasms (see arrow).
Subcortical FLAIR/T2 hyperintense lesions in the right upper frontal pre-motor region mimicking focal cortical dysplasia.
Hyperintensity of basal ganglia and asymmetric Sylvian fissures with left enlarged subarachnoid spaces.
Bilateral Rasmussen syndrome: confluent and subcortical FLAIR/T2 hyperintense lesions in the right upper frontal pre-motor region with partial collapse of surrounding arachnoid spaces. After 10 months, there was contralateral involvement.