title: Eruptive keratoacanthomas following carbon dioxide laser resurfacing.
abstract: BACKGROUND
  Skin resurfacing with the carbon dioxide (CO2) laser is currently a popular means of improving rhytides and scars. Scarring, hyperpigmentation, hypopigmentation, and infection are among the complications that have been known to occur in some patients treated with the CO2 laser.
  
  
  OBJECTIVE
  We wish to communicate a previously unreported complication of CO2 laser resurfacing-multiple eruptive keratoacanthomas.
  
  
  METHODS
  We describe a 61-year-old woman who presented with multiple eruptive keratoacanthomas subsequent to CO2 laser resurfacing. Her lesions were cultured for fungus and bacteria. Biopsy specimens of two lesions were taken.
  
  
  RESULTS
  Cultures were negative for pathogens. Biopsy specimens revealed atypical squamous epithelial proliferation and changes consistent with eruptive keratoacanthomas.
  
  
  CONCLUSIONS
  Multiple eruptive keratoacanthomas should be considered as a rare complication of CO2 laser resurfacing.
authors.affiliation: Skiin and Cancer Associates, Plantation, Florida, USA.
authors.forename: A
authors.initials: A
authors.lastname: Gewirtzman
authors.forename: D H
authors.initials: DH
authors.lastname: Meirson
authors.forename: H
authors.initials: H
authors.lastname: Rabinovitz
mesh_terms: D001706:Biopsy; D003475:Curettage; D003869:Dermabrasion / Q000295:instrumentation*; D004564:Electrocoagulation; D005260:Female; D006801:Humans; D007636:Keratoacanthoma / Q000473:pathology* / Q000601:surgery; D053685:Laser Therapy; D008875:Middle Aged; D011183:Postoperative Complications / Q000473:pathology* / Q000601:surgery; D012086:Reoperation; D012867:Skin / Q000473:pathology