The bumps on the top of the feet can not be said to be cancer. Because of the bumps on the top of the foot, in fact, there are many kinds of cases, if the bumps grow outside the skin tissue or the surface of the skin, this situation may be a local infection of human papillomavirus caused by common warts, this kind of bumps are generally rough surface, tough texture, and more limited, generally as long as the cryotherapy or laser treatment can be. Growing below the skin tissue, they may also be localized cysts or epidermal cysts, etc., or they may be subcutaneous tendon cysts, etc. But whichever type of bump it is, it has nothing to do with cancer. Even if it is cancer, it may generally appear as a predominantly ulcer on the skin, and cancer is not judged primarily by the presence or absence of a lump.