Spastic paraplegia four (SPG4; also known as SPAST-HSP) is characterised by insidiously progressive bilateral decrease-limb gait spasticity. Over fifty% of impacted men and women have some weakness from the legs and impaired vibration sense for the ankles.???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????.A variant of ependymoma, frequently located in