Yes, the microcancer idea is correct, however in most of these cases the cells also produce signals that notify the immune system that they have gone out of con

Yes, the microcancer idea is correct, however in most of these cases the cells also produce signals that notify the immune system that they have gone out of control, which then promptly kills them. It's also why patients that suffer from a specific type of skin cancer( can't recall the name) are usually HIV carriers while that type is very rare in the general population. So the cancers that we do see in the general population ( i.e. not immunosuppressed) are usually the ones the immune system can't deal with.