title: Prevalence of human papilloma virus among women with breast cancer since 2005-2009 in Isfahan.
abstract: BACKGROUND
  Human papilloma virus (HPV) DNA has been detected in breast carcinoma by different laboratorial techniques, suggesting that the virus could play a role in the pathogenesis of this tumor.
  
  
  METHODS
  It was a descriptive study. Systematic random sampling was used for selecting 55 cases of breast cancer and 51 controls of benign breast lesions from the file of Seyedshohada hospital of Isfahan since 2005-2009. A total of 106 paraffin-embedded specimens were selected and HPV DNA was analyzed by polymerase chain reaction and sequenced for different types of HPV in case of positivity for HPV DNA. Data analysis was performed by SPSS 16 software using descriptive statistic, Chi-square, and Fisher's exact tests.
  
  
  RESULTS
  Out of 55 malignant and 51 benign breast specimens, 18.2% (10) and 13.7% (7) were positive to HPV DNA, respectively (P = 0.53); 70% (7) malignant and 43% (3) benign breast specimens were positive to high-risk HPV genotypes. In malignant specimens, the most common high- and low-risk genotypes were HPV-16 (3.6%) and HPV-11 (3.6%), respectively. In benign specimens, the most common high- and low-risk genotypes were HPV-31 (3.9%) and HPV-43 (3.9%), respectively. Among malignant and benign specimens, ductal carcinoma and fibro adenoma were the most common lesions positive to different types of HPV, respectively.
  
  
  CONCLUSIONS
  This study demonstrated the presence of HPV genome in both malignant and benign tumor tissues in women with breast lesions in Isfahan; therefore, further larger epidemiologic studies need to be analyzed to establish the exact role of this virus in the pathogenesis of breast cancer.
authors.affiliation: Assistant Professor of Community Medicine, Department of Community Medicine, School of Medicine, Yasuj University of Medical Science, Yasuj, Iran.
authors.forename: Leila
authors.initials: L
authors.lastname: Manzouri
authors.affiliation: Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Science, Isfahan, Iran.
authors.forename: Rasoul
authors.initials: R
authors.lastname: Salehi
authors.affiliation: Department of Microbiology, Azad University of Qom, Qom, Iran.
authors.forename: Shervin
authors.initials: S
authors.lastname: Shariatpanahi
authors.affiliation: Pathologist, Breast Cancer Study Group, Isfahan University of Medical Science, Isfahan, Iran.
authors.forename: Parisa
authors.initials: P
authors.lastname: Rezaie
keywords: Breast cancer; genotype; human papilloma virus