title: Topical tretinoin treatment in basal cell carcinoma.
abstract: BACKGROUND
  The efficiency of topical tretinoin was examined in a patient with basal cell carcinomas (BCC) for which conventional means of removal was inappropriate.
  
  
  METHODS
  Topical tretinoin was used to treat multiple arsenic-induced superficial BCCs in a 64-year-old woman. Topical tretinoin (0.05% twice daily) was administered to four lesions for 3 weeks followed by a 3-week interruption.
  
  
  RESULTS
  After three cycles of treatment clinical healing of all the lesions was observed. Histopathological examination of the lesional biopsies showed no evidence of a tumor. However, 9 months later all four lesions relapsed and surgical excision disclosed BCC.
  
  
  CONCLUSIONS
  The data indicate that topical tretinoin treatment of multiple superficial BCCs induces clinical and pathological regression of the lesions with a high rate of relapse. This report suggests that topical tretinoin is not an effective therapy for the cure of arsenic-induced superficial BCCs.
authors.affiliation: Department of Dermatology (SB, DID), Ichilov Hospital, Tel Aviv, Israel.
authors.forename: S
authors.initials: S
authors.lastname: Brenner
authors.forename: R
authors.initials: R
authors.lastname: Wolf
authors.forename: D I
authors.initials: DI
authors.lastname: Dascalu
mesh_terms: D000279:Administration, Cutaneous; D002280:Basal Cell Carcinoma / Q000188:drug therapy* / Q000473:pathology; D005260:Female; D006801:Humans; D008875:Middle Aged; D012878:Skin Neoplasms / Q000188:drug therapy* / Q000473:pathology; D014212:Tretinoin / Q000627:therapeutic use*
chemical_list: D014212:Tretinoin