Risk Factors for Squamous Cell Carcinoma of the Penis— Population-Based Case-Control Study in Denmark
2683 Risk Factors for Squamous Cell Carcinoma of the Penis— Population-Based Case-Control Study in Denmark Birgitte Schu¨tt Madsen,1 Adriaan J.C. van den Brule,2 Helle Lone Jensen,3 Jan Wohlfahrt,1 and Morten Frisch1 1Department of Epidemiology Research, Statens Serum Institut, Artillerivej 5, Copenhagen, Denmark; 2Department of Pathology, VU Medical Center, Amsterdam and Laboratory for Pathology and Medical Microbiology, PAMM Laboratories, Michelangelolaan 2, 5623 EJ Eindhoven, the Netherlands;and 3Department of Pathology, Gentofte University Hospital, Niels Andersens Vej 65, Hellerup, Denmark Abstract Few etiologic studies of squamous cell carcinoma female sex partners, number of female sex partners (SCC) of the penis have been carried out in populations before age 20, age at first intercourse, penile-oral sex, a where childhood circumcision is rare. A total of 71 history of anogenital warts, and never having used patients with invasive (n = 53) or in situ (n = 18) penile condoms. Histories of phimosis and priapism at least 5 SCC, 86 prostate cancer controls, and 103 population years before diagnosis were also significant risk controls were interviewed in a population-based case- factors, whereas alcohol abstinence was associated control study in Denmark. For 37 penile SCC patients, with reduced risk. Our study confirms sexually tissue samples were PCR examined for human papil- transmitted HPV16 infection and phimosis as major lomavirus (HPV) DNA. Overall, 65% of PCR-examined risk factors for penile SCC and suggests that penile- penile SCCs were high-risk HPV-positive, most of oral sex may be an important means of viral transmis- which (22 of 24; 92%) were due to HPV16.
[Show full text]