My father had bladder cancer, which was caught relatively early as the cancer had not yet spread beyond the bladder wall.

The doctor performed a rather uncomfortable surgery (the pathway for a man is not pleasant) and then injected the TB virus into his bladder, which is apparently an effective treatment for this type of cancer.

It's been 20 years now, no recurrence. Think he was treated at Dana Farber in Boston.

Having gone through what was likely a life saving treatment he has become, ironically, anti-western medicine -- don't blame him, having a surgical implement shoved up main street doesn't sound like a walk in the park :)