Resluts All the 14 cases showed clivus projecting intracranial.posterior displacement of Odontoid Process were found in 3 cases,with 1 case of Atlanto-occipita fusion malformation.
14例MR矢均
示斜坡向颅
陷入,3例见齿
突后移,1例合并寰枕融合畸形,14例均清晰地
示了延颈髓的形态及与小脑扁桃体的关系。