Word: squamous
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Dates: during 2000-2009
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...dividing cells. While ATR plays a minimal role in normal cells, recently damaged and precancerous cells need the function of ATR, Nghiem explained. The researchers determined that low levels of caffeine have no effect on normal cells. The study specifically addressed the preventative effects of caffeine for cases of Squamous Cell Carcinoma—the second most common type of skin cancer in the United States. It has not been proven to have a similar effect in reducing the risk of melanoma or other varieties of skin cancer, said Rachael A. Clark of the Harvard Skin Disease Research Center...
...have the cardiovascular health of a younger man. A colonoscopy earlier this year resulted in the removal of some non-cancerous polyps. An examination of his skin in February, which he repeats every few months, discovered on his leg a non-invasive form of skin cancer, called a squamous cell carcinoma, which was "destroyed" earlier this month using liquid nitrogen. It was the fifth incidence of skin cancer for McCain. Only one of those cancers, a 2000 invasive melanoma on his left temple, was considered seriously life threatening. That cancer was removed in 2000, leaving a scar on his face...
...over HPV vaccination and treatment that is often overlooked: the elevated risks of cancer that being HPV-positive has for men. According to Johns Hopkins' researcher Dr. Maura Gillison, who worked on the study: "When you look at the cancers associated with HPV in men - including penile cancer, anal squamous cell carcinoma, oral cancers - it's very close to the number of cases of cervical cancer that occur in the U.S. in women every year. We need to adjust the public's perception... that only women are at risk...
Other types of skin cancer can pose a greater threat. Squamous-cell carcinomas generally appear as raised, pinkish scaly patches. If not promptly treated, 5% of them metastasize to other tissues and organs. Most deadly of all is malignant melanoma, which typically begins as a dark, unevenly pigmented spot with irregular edges and can quickly spread to invade internal organs. Melanoma afflicts 22,000 Americans a year and kills 5,500. Though heredity and a medical history of unusual moles play a part in it, evidence suggests that serious, blistering sunburns, suffered during the first two decades of life...
...report the best evidence yet that HPV-16, a strain of the virus, doubles the risk of larynx, pharynx and tonsil cancers. The explanation is not so farfetched: HPV-16 can transform normal cells in the mucous membranes--like those lining both the cervix and oral cavity--into cancerous squamous cells. How does HPV get to the mouth in the first place? The most likely pathway is oral...