I had another form of cancer many years ago, and after that read up on what I could do. I found that there are three types of cancer you can either avoid or catch early: colon cancer (colonoscopies), prostate cancer (PSA testing, a bit controversial) and skin cancer (seeing a dermatologist). Of these, you don't see too much on recommending that you see a dermatologist regularly, but I can't see any logical reason not to. It's quick and painless, and skin cancers caught early are almost always no problem.