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Squamous carcinoma of the anus

Where skin cancer develops Where skin cancer develops Skin cancer begins in the cells that make up the outer layer epidermis of your skin. One type of skin cancer called basal cell carcinoma begins in the basal cells, which make skin cells that continuously push older cells toward the surface. As new cells move upward, they become flattened squamous cells, where a skin cancer called squamous cell carcinoma can occur. Melanoma, another type of skin cancer, arises in the pigment cells melanocytes. Squamous cell carcinoma of the skin occurs when the flat, thin squamous cells in the outer layer of your skin develop errors in their DNA. Ordinarily, new cells push older cells toward your skin's surface, and the older cells die and are sloughed off.
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Squamous cell cancer of the rectum

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Squamous cell cancer of the rectum

Over eighty types of HPV have been identified. Different types of the human papillomavirus are known to infect different parts of the body. It infects the epithelial cells of skin and mucosa. Infection with the virus occurs when these areas come into contact with a virus, allowing it to transfer between epithelial cells. A study published in The New England Journal of Medicine showed that those infected with HPV were 32 times more likely to develop oral or throat cancers. This finding dwarfs the increased risk associated with two acknowledged factors for developing these cancers:
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What Is Anal Cancer?

Colon[ edit ] Gross appearance of an opened colectomy specimen containing two adenomatous polyps the brownish oval tumors above the labels, attached to the normal beige lining by a stalk and one invasive colorectal carcinoma the crater-like, reddish, irregularly-shaped tumor located above the label. Histopathologic image of colonic carcinoid stained by hematoxylin and eosin. The vast majority of colorectal cancers are adenocarcinomas.
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Pathology and genetics of tumours of the digestive system. World Health Organization classification of tumours, Vol. Modlin IM, Sandor A.
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