Eli5 why cancerous Tumors cant just be removed

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Gandma had colon cancer. They just cut ist out.
Grandpa has liver cancer. Has to go through chemo.
Why cant they just cut out the liver cancer. The liver can heal Right?

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8 Answers

Anonymous 0 Comments

Other commenters have answered thoroughly, but one detail I wanted to add on the whole cancer spreading business is that it doesn’t just spread into adjacent body parts, it can get into your blood stream, at which point it can crop up pretty much anywhere, and any sort of precision in removing it isn’t going to eliminate it very well anymore.

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