title: A majority of inverted sinonasal papillomas carries Epstein-Barr virus genomes.
abstract: BACKGROUND
  The relationship between sinonasal inverted papilloma (IP) and various strains of human papilloma virus (HPV) has been examined previously. Yet there is little consensus regarding the incidence or role of HPV in IP. The possible role of Epstein-Barr virus (EBV), which, like HPV, is a DNA virus linked to human lymphoid and epithelial malignancies, was investigated.
  
  
  METHODS
  The polymerase chain reaction (PCR) was used to detect EBV genomic sequences in surgical specimens of IP, in benign nasal polyps, and various control tissues. The IP specimens were similarly examined for the presence of HPV types 6, 11, 16, and 18.
  
  
  RESULTS
  EBV DNA was found in 13 of 20 IP specimens (65%) and none of the 10 control tissues. Nine of the 20 specimens contained HPV DNA, and 5 of 20 specimens contained both EBV and HPV.
  
  
  CONCLUSIONS
  These results imply a previously unsuspected role for Epstein-Barr virus in the pathogenesis of sinonasal inverted papilloma.
authors.affiliation: Department of Otolaryngology, Hospital for Sick Children, Toronto, Canada.
authors.forename: M R
authors.initials: MR
authors.lastname: Macdonald
authors.forename: K T
authors.initials: KT
authors.lastname: Le
authors.forename: J
authors.initials: J
authors.lastname: Freeman
authors.forename: M F
authors.initials: MF
authors.lastname: Hui
authors.forename: R K
authors.initials: RK
authors.lastname: Cheung
authors.forename: H M
authors.initials: HM
authors.lastname: Dosch
mesh_terms: D004279:DNA, Viral / Q000032:analysis / Q000235:genetics; D005814:Genes, Viral / Q000235:genetics; D016679:Genome, Viral; D006566:Herpesviridae Infections; D004854:Herpesvirus 4, Human / Q000235:genetics*; D006801:Humans; D009298:Nasal Polyps / Q000235:genetics / Q000382:microbiology; D009669:Nose Neoplasms / Q000235:genetics / Q000382:microbiology*; D018308:Papilloma, Inverted / Q000235:genetics / Q000382:microbiology*; D027383:Papillomaviridae / Q000145:classification / Q000235:genetics; D010255:Paranasal Sinus Neoplasms / Q000235:genetics / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D014412:Tumor Virus Infections
chemical_list: D004279:DNA, Viral