What are the risk factors for anal cancer?

HPV smoking: Anal cancer accounts for about 1% of gastrointestinal tract cancers in the us. It has been definitely associated with exposure to certain strains of HPV (human papilloma virus), anal warts, anal sex, and smoking. It is probably related to HIV but the data are not as clear. It is rarely seen in transplantation patients due to their immunosuppression.

A few: The major risk factors are a history of genital herpes, HIV positivity, multiple sexual partners, and receptive anal intercourse. If you have any suspicion, you should see your doctor for a thorough examination.