The incidences of<unk>  and its different forms are unknown. However, the frequency of cortical dysplasia in general has been estimated to be 1 in 2,500 newborns.<unk>  is one of the best-known and most common malformations of cortical development, accounting for 20% of all cases. In the largest series of<unk>  cases, the bilateral perisylvian pattern was the most common topological pattern (52% of cases) followed by the unilateral perisylvian pattern (9% of cases).
Polymicrogyria
Geographic atrophy
Posterior cortical atrophy
Coprolalia
Neurofibrillary tangle
Argyria
Hypermastigia
Fibular hemimelia