title: 1927-nm fractional resurfacing of facial actinic keratoses: a promising new therapeutic option.
abstract: BACKGROUND
  Actinic keratoses (AK) are precancerous epidermal proliferations commonly present on chronically sun-damaged skin. These lesions are among the most often treated dermatologic conditions.
  
  
  OBJECTIVE
  We sought to investigate the 6-month safety, tolerance, and efficacy of nonablative 1927-nm fractional resurfacing of facial AK.
  
  
  METHODS
  This was a prospective clinical trial of 24 individuals with facial photodamage and AK receiving up to 4 treatments with the fractionated 1927-nm nonablative thulium laser.
  
  
  RESULTS
  At 6 months, an 86.6% reduction in absolute number of lesions was noted by independent physician assessment. In addition, at this same time point, patients reported marked or noticeable improvement in overall photodamage.
  
  
  CONCLUSIONS
  This prospective study does not provide safety, tolerance, and efficacy data beyond 6 months of follow-up, nor does it identify the precise mechanism of action involved in AK clearance after 1927-nm resurfacing.
  
  
  CONCLUSIONS
  The clinical and histologic findings, as well as the reported patient satisfaction and safety, suggest that the treatment of AK and photodamage with a fractionated 1927-nm nonablative thulium laser is a promising new therapeutic option.
authors.affiliation: Laser & Skin Surgery Center of New York, New York, New York 10016, USA. eweiss@laserskinsurgery.com
authors.forename: Elliot T
authors.initials: ET
authors.lastname: Weiss
authors.forename: Jeremy A
authors.initials: JA
authors.lastname: Brauer
authors.forename: Robert
authors.initials: R
authors.lastname: Anolik
authors.forename: Kavitha K
authors.initials: KK
authors.lastname: Reddy
authors.forename: Julie K
authors.initials: JK
authors.lastname: Karen
authors.forename: Elizabeth K
authors.initials: EK
authors.lastname: Hale
authors.forename: Lori A
authors.initials: LA
authors.lastname: Brightman
authors.forename: Leonard
authors.initials: L
authors.lastname: Bernstein
authors.forename: Roy G
authors.initials: RG
authors.lastname: Geronemus
mesh_terms: D004487:Edema / Q000209:etiology; D004890:Erythema / Q000209:etiology; D005148:Facial Dermatoses / Q000601:surgery*; D005260:Female; D006801:Humans; D055623:Keratosis, Actinic / Q000601:surgery*; D053685:Laser Therapy / Q000009:adverse effects / Q000379:methods*; D008297:Male; D008875:Middle Aged; D013932:Thulium; D016896:Treatment Outcome
chemical_list: D013932:Thulium