title: Intractable epilepsy in hemimegalencephaly and tuberous sclerosis complex.
abstract: Hemimegalencephaly is a rare brain malformation consisting of the enlargement of 1 hemisphere, often associated with abnormal cortical gyration, thick cortex, large neurons, and increased astrocytes. Cranial asymmetry is the first clinical sign usually present at birth; in the most severe cases, hemimegalencephaly may be evident during pregnancy. Hemiparesis, intractable epilepsy, and developmental delay are the typical clinical manifestations. Tuberous Sclerosis Complex is an autosomal dominant disorder affecting about 1 in 6000 live births; the number of spontaneous mutations is remarkable. It is characterized by the development of hamartias, or nongrowing lesions, and hamartomas, which grow as benign tumors and rarely progress to malignancy. These lesions most frequently involve the brain, skin, kidneys, eyes, and heart. The rare association of hemimegalencephaly and tuberous sclerosis complex has been reported in a few cases. The authors report the case of a 4-year-old boy with left hemimegalencephaly, tuberous sclerosis complex genetically confirmed, and intractable epilepsy originating from the nonhemimegalencephalic hemisphere.
authors.affiliation: Department of Obstetric and Gynecology, Division of Neonatology and Intensive Care Unit, University Hospital, Modena, Italy.
authors.forename: Maria P
authors.initials: MP
authors.lastname: Guerra
authors.forename: Francesca
authors.initials: F
authors.lastname: Cavalleri
authors.forename: Nicola
authors.initials: N
authors.lastname: Migone
authors.forename: Licia
authors.initials: L
authors.lastname: Lugli
authors.forename: Olivier
authors.initials: O
authors.lastname: Delalande
authors.forename: Giovanni B
authors.initials: GB
authors.lastname: Cavazzuti
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Ferrari
mesh_terms: D002675:Child, Preschool; D018450:Disease Progression; D004569:Electroencephalography / Q000379:methods; D004827:Epilepsy / Q000209:etiology* / Q000473:pathology; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009421:Nervous System Malformations / Q000150:complications* / Q000473:pathology; D014402:Tuberous Sclerosis / Q000150:complications* / Q000473:pathology