title: Bilateral (opercular and paracentral lobular) polymicrogyria and neurofibromatosis type 1.
abstract: Anecdotal cases of polymicrogyria (PMG; a malformation of cortical development consisting of an excessive number of small gyri with abnormal lamination) in patients with neurofibromatosis type 1 (NF1) have been described; however, the cases were unilateral and had negative NF1 genetic testing. We describe an 11-year-old girl with NF1 manifesting as a complex epileptic syndrome, including partial seizures secondarily generalized and status epilepticus, who had in association, bilateral, asymmetrical (opercular and paracentral lobular) PMG. She had a 1-bp deletion (c.1862delC) in exon 12b of the NF1 gene. It is notable that, given the key role played by the NF1 gene product, neurofibromin, in normal brain development, and the relatively high frequency of other brain findings in NF1, there are not more NF1 cases with brain malformations manifesting as PMG.
authors.affiliation: Department of Formative Processes, University of Catania, Italy. m.ruggieri@unict.it
authors.forename: Martino
authors.initials: M
authors.lastname: Ruggieri
authors.forename: Mario
authors.initials: M
authors.lastname: Mastrangelo
authors.forename: Alberto
authors.initials: A
authors.lastname: Spalice
authors.forename: Rosanna
authors.initials: R
authors.lastname: Mariani
authors.forename: Isabella
authors.initials: I
authors.lastname: Torrente
authors.forename: Agata
authors.initials: A
authors.lastname: Polizzi
authors.forename: Irene
authors.initials: I
authors.lastname: Bottillo
authors.forename: Claudio
authors.initials: C
authors.lastname: Di Biase
authors.forename: Paola
authors.initials: P
authors.lastname: Iannetti
mesh_terms: D001921:Brain / Q000473:pathology*; D002648:Child; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D054220:Malformations of Cortical Development / Q000150:complications*; D009456:Neurofibromatosis 1 / Q000150:complications*; D011247:Pregnancy