title: The role of the 595-nm pulsed dye laser in treating superficial basal cell carcinoma: outcome of a double-blind randomized placebo-controlled trial.
abstract: BACKGROUND
  Pulsed dye laser (PDL) treatments have been suggested to be a safe and effective therapeutic approach for treating basal cell carcinomas (BCCs). However, robust supporting evidence is lacking due to inconsistent design of available studies.
  
  
  OBJECTIVE
  To evaluate PDL efficacy and safety in treating superficial BCC (sBCC) at low-risk anatomical sites in an evidence-based study setting.
  
  
  METHODS
  Thirty-nine patients (27 men and 12 women, 75·9 ± 10 years) with a total of 100 sBCCs were randomized to receive PDL treatment (wavelength 595 nm; fluence 8 J cm(-2) ; pulse duration 0·5 ms; spot size 10 mm) or sham treatment. The primary endpoint was complete clinical and histological remission of the tumour at 6-month follow-up; the secondary endpoints were the evaluation of side-effects and pain as well as patient satisfaction.
  
  
  RESULTS
  The primary endpoint showed significant superiority of the laser group to the sham group (P < 0·0001). Complete remission was achieved in 44 of 56 cases (78·6%) in the laser and in two of 44 cases (4·5%) in the sham treatment arm. The main adverse events in the laser group were crusts, hyper- and hypopigmentation. An average of 72% of patients stated at the individual sessions that they were 'satisfied' with the laser treatment, whereas 25% were 'very satisfied'.
  
  
  CONCLUSIONS
  PDL is an effective and safe method for treating sBCC. However, the occurrence of persistent dyspigmentation still limits the potential for excellent cosmetic outcomes.
authors.affiliation: Department of Dermatology, Darmstadt, Germany; Department of Dermatology, University Hospital Greifswald, Ferdinand-Sauerbruchstraße, D-17475, Greifswald, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Karsai
authors.forename: H
authors.initials: H
authors.lastname: Friedl
authors.forename: H
authors.initials: H
authors.lastname: Buhck
authors.forename: M
authors.initials: M
authors.lastname: Jünger
authors.forename: M
authors.initials: M
authors.lastname: Podda
mesh_terms: D000368:Aged; D002280:Basal Cell Carcinoma / Q000601:surgery*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D054025:Lasers, Dye / Q000627:therapeutic use*; D008297:Male; D012878:Skin Neoplasms / Q000601:surgery*; D016896:Treatment Outcome