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Find anal cancer stock images in hd and millions of other royalty-free stock photos, illustrations and vectors in the shutterstock collection. Anal dysplasia and anal cancer what you need to know - duration 1435. At first, most people assume the bleeding is caused by hemorrhoids (painful, swollen veins in the anus and rectum that may bleed). Anal cancer is an uncommon malignancy that starts in the anus-- the opening at the end of the rectum. The american society of clinical oncology estimates that 8,300 cases of anal cancer will be. What causes anal cancer? Nearly all (90) anal cancers are attributable to persistent infection with hpv, the cause of genital warts. Certain strains of hpv are known to be oncogenic (cancer-causing), especially types hpv 16 and 18, and these two infections cause more than 90 of anal cancers. Rarely, subtyping of hpv has detected low-risk strains such as hpv 6 or multiple strains of hpv. Anal cancer is a type of cancer that forms in tissues of the anus. The anus is the opening of the rectum to the outside of the body and at the end of the gi tract. 9 signs your butt discomfort is actually an anal cancer red flag. But, while anal cancer isnt hugely common (like, say, breast cancer), it is something you need to know about. Search from 60 top anal cancer photos pictures and royalty-free images from istock. Find high-quality stock photos that you wont find anywhere else.