Adrenal tumor epidemiology and demographics

Epidemiology
Incidence
 * In women and men who do not engage in anal intercourse with other men - 0.9/100,000
 * In HIV negative men who engage in anal intercourse with other men - 35/100,000
 * In HIV positive men who engage in anal intercourse with other men - (estimated) 60-70/100,000

Anal cancer is uncommon and accounts for only 4% of all cancers of the lower alimentary tract. There are estimated to be 4,650 new cases and 690 deaths from anal cancer in the United States in 2007. Because it is rare and because it occurs in a body part that is rarely discussed, most people are unaware of its existence.