MR OF CEREBELLAR CORTICAL DYSPLASIA

MR imaging findings are described in four patients with cerebellar cor tical dysplasia. Typically, cerebellar disorganized folia were seen as an irregular bumpy gray-white matter interface. In addition, cystlike cortical abnormalities were observed in two patients and associated s upratentorial developmental abnormalities were seen in three patients. To our knowledge, cerebellar cortical dysplasia without supratentoria l abnormalities, as seen in one patient, has not been reported before. We suggest that cerebellar cortical dysplasia represents a spectrum o f abnormalities ranging from mild to extensive in severity.