title: Distal digital keratoacanthoma: two cases with a review of the literature.
abstract: BACKGROUND
  Distal digital keratoacanthoma (DKA) is an uncommon tumor difficult to diagnose clinically, and even histologically, with certainty.
  
  
  OBJECTIVE
  Our purpose is to report on two new cases and to discuss the clinical, histologic, and differential diagnosis.
  
  
  METHODS
  We have reviewed all well documented cases published in the literature.
  
  
  RESULTS
  No single diagnostic criterion is sufficiently sensitive and specific to be pathognomonic.
  
  
  CONCLUSIONS
  The diagnosis of DKA should be based on the correlation of clinical, radiological and pathologic findings, but the tumor is frequently diagnosed histologically as "squamous cell carcinoma, keratoacanthoma type" or as keratocarcinoma.
authors.affiliation: Nail Disease Center -42, rue des Serbes 06400, Cannes, France. baranrmd@cote-dazur.com
authors.forename: R
authors.initials: R
authors.lastname: Baran
authors.forename: G
authors.initials: G
authors.lastname: Mikhail
authors.forename: B
authors.initials: B
authors.lastname: Costini
authors.forename: A
authors.initials: A
authors.lastname: Tosti
authors.forename: S
authors.initials: S
authors.lastname: Goettmann-Bonvallot
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D007636:Keratoacanthoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009260:Nail Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery