????? ??? ??, ?? ??? ??? ??? ? ?? ?? ??????. ???? ???? ??? ? ?? ?? ??? ?????.?? ????? ???? ??? ???? ?? ??? ? ?? ???? ??? ? ????. ?? ????? ??? ????? ??? ???? ?? ???? ??????!A variant of ependymoma, normally located in the spinal twine, with tumor cells organized in fascicles of variable width and cell density.Retinoblastoma can be a malignant tumor