Squamous cell carcinoma – National Library of Medicine …

Squamous cell carcinoma is a type of skin cancer.A.D.A.M.

Skin cancer falls into two groups: nonmelanoma and melanoma. Squamous cell is a type of nonmelanoma skin cancer.

Squamous cell cancer may occur in normal skin or in skin that has been injured or inflamed. Most skin cancers occur on skin that is regularly exposed to sunlight or other ultraviolet radiation.

The earliest form of squamous cell skin cancer is called Bowen's disease (or squamous cell in situ). This type has not spread to nearby tissues.

Actinic keratosis is a precancerous skin lesion that rarely may become a squamous cell cancer.

Risks for squamous cell skin cancer include:

Having light-colored skin, blue or green eyes, or blond or red hair

Long-term, daily sun exposure (such as in people who work outside)

Many severe sunburns early in life

Older age

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Squamous cell carcinoma - National Library of Medicine ...