title: Skin problems of aging.
abstract: It is not practical to treat diffuse areas of sun damage with liquid nitrogen. Patients with actinic keratoses require painstaking instruction and numerous visits to guide them through a course of 5-fluorouracil (5-Fu) therapy. While basal cell carcinoma rarely metastasizes, its potential for localized destruction and its tendency to recur after therapy should not be underestimated. In certain locations, the tumor does not have a benign clinical course.
mesh_terms: D000368:Aged; D000375:Aging; D002280:Basal Cell Carcinoma / Q000628:therapy; D002294:Carcinoma, Squamous Cell / Q000628:therapy; D062109:Dermatologic Surgical Procedures; D006801:Humans; D012867:Skin / Q000473:pathology; D012871:Skin Diseases / Q000209:etiology* / Q000628:therapy; D012878:Skin Neoplasms / Q000628:therapy; D013471:Sunburn / Q000473:pathology / Q000517:prevention & control; D013473:Sunscreening Agents / Q000627:therapeutic use
chemical_list: D013473:Sunscreening Agents