??? ??? ?? ? ? ?? ?? ??? ????? ??? ?? ??? ???? ??? ???? ?????.Any retinitis pigmentosa wherein the cause of the disease can be a mutation within the RHO gene. [from MONDO]A variant of ependymoma, often present in the spinal wire, with tumor cells arranged in fascicles of variable width and mobile density.????? ?????? ?????? ?? ?? ????? ??? ??? ???