Did the doctor biopsy the red "angry" area? IF he did then he should know if it is CIS (carcinoma in situ) or not.
If he is unsure he may be afraid that it is. CIS is always high grade and requires treatment, usually with BCG.
This might be a good time for your dad to seek a second opinion from someone who treats a LOT of bladder cancer patients such as at a major cancer center or medical school.
BCG would be a good idea IF it is high grade but it is not usually effective for low grade bladder cancer.
Sara Anne
Diagnosis 2-08 Small papillary TCC; CIS
BCG; BCG maintenance
Vice-President, American Bladder Cancer Society
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