Huc,
BCG is one of the recommendations for T1. The article, link below, speak to the issue. Given your other issues, have you sought a second opinion to consider how all of your issues relate to a treatment of choice ? It would seem that your other doctors should be part of the care team along with your urologist.
Side effects vary widely. Some have no to little discomfort, other range to severe. You need to have all your caregivers on-board and ready to assist as needed. You need to make sure that your care team is ready to help you through the BCG treatments if issues do arrise.
Stage I bladder cancer
Described as T1, N0, M0, stage I bladder cancer means that the cancer has grown into the layer of connective tissue beneath the lining layer of the bladder wall. The disease has not spread to lymph nodes or distant sites.
The optimal management of T1 high-grade bladder cancer
Includes BCG application in cases of T1 cancer.
www.ncbi.nlm.nih.gov/pmc/articles/PMC2792452/
Best,
Jack