Over the last several years, I've had several small spots of skin on my shoulder cut out due to skin cancer concerns.  Now, my doctor say I have precancerous areas on my face that need treatment, but he's recommending I use a cream.  Is that likely to work?
D000287:Administration, Topical; D000964:Antimetabolites, Antineoplastic / Q000008:administration & dosage*; D005145:Face; D005472:Fluorouracil / Q000008:administration & dosage*; D006801:Humans; D011230:Precancerous Conditions / Q000188:drug therapy*; D012878:Skin Neoplasms / Q000188:drug therapy* / Q000601:surgery
D000964:Antimetabolites, Antineoplastic; D005472:Fluorouracil