High prevalence and incidence of anal pre-cancerous lesions in men with HIV; HAART has little impact

Published: March 22, 2011

Prevalence and incidence of high-grade pre-cancerous anal lesions in HIV-positive men who are taking antiretroviral therapy are high, Canadian investigators report in the online edition of Clinical Infectious Diseases.

A low nadir CD4 cell count and infection with HPV types 16 and 18 were associated with an increased risk of developing high-grade pre-cancerous anal lesions (AIN-2, 3).

The investigators hope that their findings will help identify patients who have a higher risk of HPV-associated anal disease.

Rates of HIV-related opportunistic infections have fallen significantly since the introduction of antiretroviral therapy.

However, the incidence of anal cancer is increasing.

Most of the information about the risk factors for this disease in HIV-positive gay men was obtained during the era before effective antiretroviral therapy became available. These include high-grade pre-cancerous lesions, infection with HPV 16 and 18, multiple HPV infections and CD4 cell count.

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