Topical use of 5-fluorouracil.
D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000139:chemically induced*; D005260:Female; D005472:Fluorouracil / Q000009:adverse effects*; D006801:Humans; D008297:Male; D012878:Skin Neoplasms / Q000139:chemically induced*
D005472:Fluorouracil