Congenital brain abnormalities: Pictorial essay

Among all fetal anomalies, the central nervous system anomalies represent one of the most frequently involved structures with an estimated incidence of 1 per 100 births. It is mostly difficult to make an accurate diagnosis of congenital brain malformation, based on clinical findings; thus use of computed tomography (CT) or magnetic resonance imaging (MRI) is essential in these cases. The aim of this essay is to state the imaging findings of the main, most prominent congenital brain abnormalities and to present a practical classification of the entity.