title: Peripheral calcifying odontogenic cyst.
abstract: BACKGROUND
  Calcifying odontogenic cyst (COC) is a rare lesion representing about 1% of jaw cysts. It may occur in a central (intraosseous) or peripheral (extraosseous) location.
  
  
  METHODS
  A case of peripheral COC located on the gingiva, appearing as a painless, circumscribed, pink nodule has been reported.
  
  
  RESULTS
  Peripheral, in contrast to central, COC tends to affect older patients. Peripheral COC is a less aggressive lesion than the central counterpart, and a simple excision biopsy is curative.
  
  
  CONCLUSIONS
  The histological finding of a keratinized epithelium rich in ghost cells has helped in making the diagnosis.
authors.affiliation: Dental School, University of Chieti, Italy.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Orsini
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Fioroni
authors.forename: Carrado
authors.initials: C
authors.lastname: Rubini
authors.forename: Adriano
authors.initials: A
authors.lastname: Piattelli
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005887:Gingival Neoplasms / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008334:Mandible; D018333:Odontogenic Cyst, Calcifying / Q000473:pathology* / Q000601:surgery