Le anomalie di migrazione sono malformazioni congenite dovute a diverse cause che interferiscono con la migrazione neuroblastica dal secondo mese di vita intrauterina. Esse includono le seguenti entità: lissencefalia (agiria - pachigiria), polimicrogiria, eterotopia di sostanza grigia, emimegalencefalia e schizencefalia. Sono stati esaminati con TC ed RM 21 pazienti con anomalie di migrazione che presentavano ritardo di sviluppo, epilessia e turbe della motilità.
Abbiamo riscontrato come la RM rappresenti metodica di elezione nella diagnosi delle anomalie di migrazione per le sue caratteristiche di multiplanarietà e di migliore risoluzione di contrasto.
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