Carol, I agree with Mike -- that's RRD. Keep an eye on the plant for new growth. If you removed the entire cane with those symptoms, down to the base, you might have saved the rose. But judging by the amount of symptomatic growth in the pictures, I don't have high hopes. If that was my plant, I'd remove it entirely. It looks as if the symptomatic growth was appearing on several main canes, indicating the whole plant is infected.
:-(
~Christopher
