ET has great news regarding Rachael Ray's upcoming voice surgery -- she may not even go under the knife."During the course of normal pre-op care, Rachael started an intensive new vocal therapy and it is now the opinion of her doctor that surgery may not be necessary since the treatment has had initial success," Rachael's publicist tells ET."Rachael is very grateful that it won't be a silent Christmas and thanks everyone for their prayers and well wishes."The TV host was scheduled to undergo surgery this week to remove a benign cyst on her vocal cords -- that appointment has been canceled.