Faking cancer is not uncommon. If you want to fake such a disease, tell everyone you were diagnosed but you are refusing treatment. Then collect all the money you can from well-wishers.
Now, seek out a faith healer. Have him put his hands on you, drop to the floor and shake around uncontrollably. Then miraculously rise up as if cured by some sort of divine intervention.
This sort of thing goes on all the time. But, for your own protection avoid healers who use snakes!
Thomas L. Ripley