For people with cancer, why can’t doctors just remove the affected body part(s) (with the exception of the brain, spine, and lungs, maybe)?

Question

I’ve got a grandpa in the hospital for bladder cancer (benign, fortunately) and I’m wondering why they can’t just remove his bladder and put in a nee one or an artificial one.

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Answer 1

Organ transplants require going on lifelong immune suppressants that leave you vulnerable to sickness and only delay the time until your body’s immune system destroys the new organ and requires you to either get a new one or die of organ failure.

They’re last resort measures that keep people alive who would otherwise die because their current organ is either already dead or about to fail. They aren’t really operations of convenience and if removing the whole organ would cure the cancer, it’s generally better to try to just remove the cancer from the organ instead.