Tobacco usage affects risk of metastases of HPV-related oropharynx cancer
Source: professional.cancerconsultants.com Author: staff Researchers from the University of Michigan have reported that current tobacco users with advanced, human papillomavirus (HPV)-positive oropharyngeal cancer are at increased risk of disease recurrence. The details of this study were published in the February 15, 2010 issue of Clinical Cancer Research.[1] Human papillomaviruses are probably the sole cause of cancers of the cervix and have been associated with cancers of the vulva, vagina, penis, and rectum. Epidemiologic and molecular biology studies have also suggested that HPV infection may be associated with cancers of the head and neck. The overall frequency of HPV in benign and precancerous lesions ranges from 18.5% to 35.9%, depending upon the detection methodology. Researchers affiliated with an international study have also that reported that oral infection with HPV is associated with the development of head and neck cancers. These authors concluded that HPV infection increased the risk of oropharyngeal cancer in both users and non-users of alcohol and tobacco. These authors also suggested that the more prevalent practice of oral sex may explain the increased incidence of tonsillar and base-of-the-tongue cancers since 1973. Researchers from the University of Maryland and Harvard University have also reported that the better survival among White patients compared with African-American patients with oropharyngeal cancer appears to be due, at least in part, to the higher prevalence of human papillomavirus (HPV)-related cancers in White patients. The current study evaluated the effect of tobacco usage on the outcomes of patients with HPV-related advanced oropharyngeal cancer. These authors [...]