How effective is intravesical BCG therapy for bladder cancer?

BCG is placed directly into the bladder through a catheter after the visible tumour has been removed. It stimulates a local immune response against abnormal cells. The schedule may include an initial course followed by maintenance treatments, depending on pathology and the urologist's plan.

Effectiveness is judged through cystoscopy, urine testing and review of symptoms rather than by one universal result. Tumour number, size, grade, depth, previous recurrence and whether treatment can be completed all influence the outlook. BCG is mainly used when cancer has not invaded the bladder muscle.

Follow instructions about fluids, urination and hygiene after each instillation. Tell the urology team about fever, urinary infection symptoms, immune problems, recent procedures or medicines that suppress immunity before a session. Attend planned cystoscopies even when you feel well, because bladder tumours can recur without obvious symptoms.

Burning, urgency and needing to pass urine often occur for a short time after treatment. Ask how to manage these effects and what the clinic considers outside the expected range.

Contact the urology team promptly for fever, chills, worsening pain, heavy blood in the urine, inability to pass urine, or symptoms that do not settle. Seek urgent care for severe illness, confusion, breathing difficulty or fainting, and explain that you recently received bladder BCG.

What risk group does my pathology place me in? How many treatment sessions and follow-up cystoscopies are planned? Which reactions are expected after an instillation? What happens if BCG is delayed, not tolerated or the tumour returns?