Squamous cell carcinoma

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Definition

In November 2006, first lady Laura Bush had a small squamous cell carcinoma removed from her shin. Though hers was a high-profile case, it was by no means unique. An estimated 250,000 new cases of squamous cell carcinoma are diagnosed in the United States every year. And though squamous cell carcinoma was once found mainly in older adults, it's occurring with increasing frequency in people younger than 40.

Mrs. Bush's cancer was caught and treated early. In such cases, squamous cell carcinoma is highly curable and rarely causes further problems. But untreated squamous cell carcinoma can destroy healthy tissue around the tumor, spread to the lymph nodes or other organs, and occasionally prove fatal.

Most squamous cell carcinomas result from prolonged exposure to ultraviolet (UV) radiation, either from sunlight or from tanning beds or lamps. Avoiding UV light as much as possible is the best protection. Sunscreen is an important part of a sun-safety program, but by itself doesn't completely prevent squamous cell carcinoma or other types of skin cancer.

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Symptoms