Basal ganglia (BG) and thalamic involvement result in extrapyramidal symptoms. Multicystic encephalopathy is associated with quadriplegia, bulbar and choreoathetoid symptoms, microcephaly and mental retardation. [pediatricneurosciences.com]

As the injury progresses, seizures subside and the electroencephalogram becomes isoelectric or shows a burst suppression pattern. At that time, wakefulness may deteriorate further, and the fontanelle may bulge, suggesting increasing cerebral edema. [emedicine.medscape.com]