PDS also involves development of euthyroid goiter in late childhood to early adulthood Whilst NSEVA would not. [from GeneReviews]????? ??? ????? ???? ????.????? ???? ??? ??? ??? ???? ?????.A variant of ependymoma, typically located in the spinal cord, with tumor cells organized in fascicles of variable width and cell density.????? ?????? ?????? ??