Conclusion: The best treating method of rhinorrhe in front bases of skull, bases of saddle and clivus blurnenbachii orificium fistulae except malignant tumor is endoscopic repair of fistubus opening.

前颅底、鞍底、斜坡处口，除恶性肿瘤引起的鼻漏，最佳的治疗方法是鼻内镜下修补。

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.

14MR位像均显示斜坡向颅内陷入,3见齿突后移,1合并寰枕融合畸形,14均清晰地显示了延颈髓的形态及与小脑扁桃体的关系。