??? ??? ?? ? ? ?? ?? ??? ????? ??? ?? ??? ???? ??? ???? ?????.???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????.A variant of ependymoma, often present in the spinal wire, with tumor cells arranged in fascicles of variable width and mobile density.Retinoblastoma can be a malignant tumor with the establishing retina that occurs in little ones, typically