82-year-old Mother with CIS

Yes, the CIS was diagnosed from TURB pathology.

A while back I posted about my mother being recently diagnosed with CIS following transitional cell bladder cancer diagnosis 4 years ago. She decided against doing BCG or any treatment because of her age and frail health. She recently had her 2nd scope since diagnosis and her doctor reported that he visualized the CIS and that it is "covering 10 percent of her bladder lining." He told her that it is growing faster than he expected. However, I had an appt with a (different) urologist last week and I asked him about my mother. He stated that CIS cannot be seen by naked eye and that there is no way her urologist could give her this type of report. The report by her own doctor has caused much anxiety to my mother and she fears death is imminent from the cancer. What are your opinions on this matter? My mother is mainly wanting more information from her doctor as to what the course of disease will be without doing any treatment. Any info you can offer on that as well would be greatly appreciated.