Grades A commonly used classification system of<unk>  is the sonographic grading system proposed by Papile: *grade I -<unk>  is confined to the<unk><unk> . *grade II - intraventricular<unk>  without ventricular dilatation *grade III - intraventricular<unk>  with ventricular dilatation *grade IV - intraventricular rupture and<unk>  into the surrounding white matter In the grading system proposed by Papile the grad 4<unk> s results from a subependymal bleeding into the adjacent brain parechyma. Today however these bleedings are regarded as venous<unk> c infarctions. This is a result of veins compressed by the subependymal bleeding.
Germinal matrix hemorrhage
Gray matter heterotopia
Periventricular leukomalacia
Basilar invagination
Rhombencephalosynapsis
Nasal glial heterotopia
Neuronal migration disorder
Tooth fusion