??? ??? ?? ? ? ?? ?? ??? ????? ??? ?? ??? ???? ??? ???? ?????.???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????.A variant of ependymoma, typically located in the spinal wire, with tumor cells arranged in fascicles of variable width and cell density.Retinoblastoma is really a malignant tumor from the creating retina that happens in little ones, usually