??? ??? ?? ? ? ?? ?? ??? ????? ??? ?? ??? ???? ??? ???? ?????.???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????.A variant of ependymoma, usually present in the spinal wire, with tumor cells organized in fascicles of variable width and cell density.Retinoblastoma can be a malignant tumor of your building retina that happens in children, typically in ad