Schizencephaly - bilateral open lip
Quadriparesis recently, some mental retardation. No previous imaging.
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Grey-matter lined CSF clefts extending from pial surface to ependymal surface, with associated polymicrogyric smooth surface along clefts. Both are open-lip. Partially deficient septum pellucidum was also suggested.
This case depicts bilateral schizencephaly. An important differential is a porencephalic cyst, which is classically described as encephalomalacic cysts communicating with the ventricle. In this case, a hypointense signal cleft lining is seen along the ependymal surface, which is usually absent in porencephalic cyst.