If you kill all the cells with the mutation, you get rid of the cancer. It can come back when you dont kill all the cancerous cells or another mutation happens. Cancerous cells are a lot more common than you think, but usually your immune system takes care of it.
Edit: important note its just some cells that mutate its not all the cells in your body.
GeneralStabs_ t1_jaqp3bn wrote
Reply to If cancer is caused by mutations in genes that regulate normal cell development/division, how does killing cancer cells prevent it from coming back? by [deleted]
If you kill all the cells with the mutation, you get rid of the cancer. It can come back when you dont kill all the cancerous cells or another mutation happens. Cancerous cells are a lot more common than you think, but usually your immune system takes care of it.
Edit: important note its just some cells that mutate its not all the cells in your body.