Some treatments like chemotherapy or radiotherapy could kill cancer cells in the body. Also, surgery can be used to remove tumours (lumps where cancer cells accumulate) and avoid cancer extending through the body.
Unfortunately these treatments don’t always work, and cancer can kick back 🙁
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Dr D commented on :
We can also try to get our immune system to recognise the cancer cells so that we can fight it. Some antibodies can help in this too.