Table 1:
Categorization of intracranial anomalies seen on MR imaging studies
| Type of Brain Abnormality | |||
|---|---|---|---|
| Forebrain Developmental | Mid- or Hindbrain Developmental | CSF-Related | WM |
| Callosal dysgenesis | Pontine hypoplasia | Ventriculomegaly | Patchy foci of abnormal WM signal (nonspecific) |
| Cortical malformations (pachygyria) | Dandy-Walker malformation | Enlarged extra-axial CSF spaces | Delayed myelination |
| Gray matter heterotopias | Cerebellar hypoplasia | Arachnoid cysts | PVL |
| Porencephalic cysts | Vermian hypoplasia | ||
| Septo-optic dysplasia | Pontine tegmental cap dysplasia | ||