title: Squamous cell carcinoma of the lower lip: exact location match in siblings.
abstract: BACKGROUND
  In recent years, genetic contribution to the development of skin cancers is under the magnifying glass of several authors and is now regarded as the main initial etiology in carcinogenesis.
  
  
  OBJECTIVE
  Two siblings who had squamous cell carcinoma of the lower lip showing an exact location match are presented.
  
  
  METHODS
  They did not share common environmental factors, and there was no history of tobacco and/or alcohol abuse.
  
  
  CONCLUSIONS
  It would be scientifically deceptive to draw generous conclusions for the cases here, other than being a very interesting and unusual coincidence, because further evaluation could not be done to scientifically prove a possible genetic contribution.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Ankara Training and Research Hospital, Turkey. dogan_tuncali@yahoo.com
authors.forename: Dogan
authors.initials: D
authors.lastname: Tuncali
authors.forename: Nurten
authors.initials: N
authors.lastname: Yavuz
authors.forename: Ahmet
authors.initials: A
authors.lastname: Terzioglu
authors.forename: Gürcan
authors.initials: G
authors.lastname: Aslan
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000235:genetics; D004198:Disease Susceptibility / Q000209:etiology*; D020022:Genetic Predisposition to Disease; D006801:Humans; D008046:Lip; D008297:Male; D008875:Middle Aged; D035781:Siblings; D012878:Skin Neoplasms / Q000209:etiology* / Q000235:genetics