Prenatal and postnatal follow-up of a fetal interhemispheric arachnoid cyst with partial corpus callosum agenesis, asymmetric ventriculomegaly and localized polymicrogyria. Case report - Fuchs, F; Moutard, M L; Blin, G; Sonigo, P; Mandelbrot, L (Fetal Diagn Ther, 2008)