This increased risk extends to the strains of HPV known to cause cancer, with about a third of MSM living with HIV shown to have HPV type 16. MSM with HIV are also more likely to go on to develop anal cancer, with incidence rates per person-years as high as five times that of HIV-negative MSM. According to the CDC, men who have sex with men are about 17 times more likely to develop anal cancer than men who only have sex with women.
In this video, Dr Joel Palefsky explains what we can do to diagnose, prevent and treat anal cancer. He is doing the largest study in LGBT health history following 5,000 men for 5 years to asses the efficacy of anal dysplasia treatment versus monitoring.