Ｒａｔｈｋｅ’ｓ裂囊肿(Ｒａｔｈｋｅ’ｓｃｌｅｆｔｃｙｓｔｓ)是由Ｒａｔｈｋｅ’ｓ囊(Ｒａｔｈｋｅ′ｓｐｏｕｃｈ)的残余发生的、少见的良性囊肿。常见于颅内,极少数情况下亦可见于蝶窦或斜坡区域。作者报道1例基本位于颅外的蝶骨斜坡Ｒａｔｈｋｅ’ｓ裂囊肿,并讨论了其胚胎学 Rathke’s cleft cysts are uncommon benign cysts that occur as a residual of the Rathke’s sac. Common in the brain, in rare cases can also be found in the sphenoid sinus or slope area. The authors report a case of an extracranial spondylolysis Rathke’s cleft cyst and discussed its embryology