dg1333,
I believe that Michael is correct. I will probably have a c&p shortly so I haven't been through the process. There are many on the "veterans benefit forum network" have been through the process. I suggest that you go to that forum and look under "cancer". In particular find Ron 91's comments...Please don't quote me but I believe that he received a letter from the VA with his revised rating and the question "do you have anything else to add"? He retained his 100% until the issue was resolved.
I highly recommend that you have a meeting with your county VSO (Veterans Service Officer)..The VA should accept a letter from your civilian Dr that your cancer at 2.7 is not in remission. If you are under lupron or other hormone therapy then you are still under active treatment! Best of luck.
Bill