Cancer Causes & Control

, Volume 12, Issue 3, pp 267–277

Risk Factors for Penile Cancer: Results of a Population-based Case–Control study in Los Angeles County (United States)

  • Hung-Fu Tseng
  • Hal Morgenstern
  • Thomas Mack
  • Ruth K. Peters
Article

DOI: 10.1023/A:1011266405062

Cite this article as:
Tseng, HF., Morgenstern, H., Mack, T. et al. Cancer Causes Control (2001) 12: 267. doi:10.1023/A:1011266405062

Abstract

The etiology of penile cancer is poorly understood, with neonatal circumcision being one of the few recognized nondemographic risk factors. Multiple logistic regression was used to analyze interview data from 100 matched case–control pairs; cases of carcinoma in situ (CIS) and invasive carcinoma of the penis were analyzed separately as well as together. Phimosis was strongly associated with invasive carcinoma (adjusted odds ratio [OR] = 16; 95% confidence interval [CI] = 4.5–57) but not CIS (OR = 1.7; 95% CI = 0.32–7.8), and these associations persisted when the analyses were restricted to uncircumcised subjects. Neonatal circumcision was inversely associated with invasive carcinoma (OR = 0.41; 95% CI = 0.13–1.1) but not CIS, and the observed association with invasive carcinoma was weakened appreciably when the analysis was restricted to subjects with no history of phimosis (OR = 0.79; 95% CI = 0.29–2.6). Other factors positively associated with invasive carcinoma or CIS or both were injury to the penis, cigarette smoking, physical inactivity and, to a lesser extent, genital warts and other infections or inflammation of the penis. Conclusions: Although many effects were imprecisely estimated in this study, the protective effect of circumcision on invasive penile cancer appears to be mediated in large part by phimosis; furthermore, the effects of certain factors such as phimosis and circumcision appear to differ for CIS and invasive carcinoma.

circumcision epidemiology penile cancer phimosis 

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Hung-Fu Tseng
    • 1
  • Hal Morgenstern
    • 2
  • Thomas Mack
    • 3
  • Ruth K. Peters
    • 3
  1. 1.Department of Healthcare AdministrationFooyin Institute of TechnologyKaohsiungTaiwan
  2. 2.Department of Epidemiology, School of Public HealthUniversity of CaliforniaLos AngelesUSA
  3. 3.Department of Preventive MedicineUniversity of Southern California, School of MedicineLos AngelesUSA