(Reuters) -
The number of head and neck cancers linked to a virus spread by oral sex is rising rapidly. Despite an overall slight decline in head and neck cancers in recent years, cases of a particular form called oropharyngeal squamous cell carcinoma (OSCC) have increased sharply, particularly in the developed world. This growth seems to be linked to cancers caused by the human papillomavirus (HPV), scientists said in a report in the British Medical Journal.
A recent study found the risk of developing oropharyngeal carcinoma was linked to a history of six or more lifetime sexual partners, four or more lifetime oral sex partners, and, for men, an earlier age at first sexual intercourse.
Sexual transmission of HPV -- primarily through
orogenital intercourse -- might be the reason for the increase in incidence of HPV related oropharyngeal carcinoma," wrote Mehanna.
The scientists pointed to recent studies which showed a 70 percent increase in the detection of HPV in biopsies taken to diagnose oropharyngeal carcinoma in Stockholm since the 1970s.
HPV-related cancer was also reported in 60-80 percent of recent biopsy samples in studies in the United States, compared with 40 percent in the previous decade, they wrote.
Fri Mar 26, 2010 7:40am EDT
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