%0 Review %T Syndrome of megalencephaly, mega corpus callosum, and complete lack of motor development: an unusual case and a literature review. %A Cetin EB %A Bilgici MNC %A Tuncer GO %A Karabag IS %A Aydin S %J Childs Nerv Syst %V 40 %N 1 %D 2024 Jan 9 %M 37688615 %F 1.532 %R 10.1007/s00381-023-06150-5 %X The syndrome of megalencephaly, mega corpus callosum (MEG-MegaCC) accompanied by complete lack of motor development is a rare condition with only few sporadic cases having been reported in the literature. In this paper, we describe a child from non-consanguineous parents presenting with MegaCC, psychomotor retardation, and language impairment linked to MEG-MegaCC syndrome. Genetic analysis, radiological findings, and detailed neurological phenotype of MEG-MegaCC syndrome with its overlapping syndromes would allow for a better classification of the disease spectrum.