Medical research

Sunlight continues to damage skin in the dark

Much of the damage that ultraviolet radiation (UV) does to skin occurs hours after sun exposure, a team of Yale-led researchers concluded in a study that was published online Feb. 19 by the journal Science.

Medical research

Scientists discover master regulator of skin development

The surface of your skin, called the epidermis, is a complex mixture of many different cell types—each with a very specific job. The production, or differentiation, of such a sophisticated tissue requires an immense amount ...

Neuroscience

Sunlight exposure found to trigger increased eating in men

A team of researchers affiliated with several institutions in Israel, working with colleagues from Columbia University in the U.S. and the Institute for Diabetes and Obesity in Germany, has found that exposure to more sunlight ...

Oncology & Cancer

Researchers discover how lactic acid weakens anti-tumor defenses

In cancer research, it has long been known that lactic acid, or lactate, is produced in large quantities by cancer cells and that this lactic acid disrupts our defense against tumors. Until now, however, we did not know exactly ...

Medical research

The prostate cancer cell that got away

Cold Spring Harbor Laboratory (CSHL) Associate Professor Pavel Osten and Professor Lloyd Trotman have developed a new way to study the life history of prostate cancer in mice. The pair combined their expertise in whole-organ ...

Oncology & Cancer

Online pharmacy lab finds benzene in 78 sunscreen products

Valisure LLC, an online pharmacy company that also conducts independent testing of consumer products, has issued a petition to the FDA to enact stricter rules regarding the presence of benzene in sunscreen products. In an ...

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Skin neoplasms (also known as "skin cancer") are skin growths with differing causes and varying degrees of malignancy. The three most common malignant skin cancers are basal cell cancer, squamous cell cancer, and melanoma, each of which is named after the type of skin cell from which it arises. Skin cancer generally develops in the epidermis (the outermost layer of skin), so a tumor can usually be seen. This means that it is often possible to detect skin cancers at an early stage. Unlike many other cancers, including those originating in the lung, pancreas, and stomach, only a small minority of those affected will actually die of the disease, though it can be disfiguring. Melanoma survival rates are poorer than for non-melanoma skin cancer, although when melanoma is diagnosed at an early stage, treatment is easier and more people survive.

Skin cancer is the most commonly diagnosed type of cancer. Melanoma and non-melanoma skin cancers combined are more common than lung, breast, colorectal, and prostate cancer. Melanoma is less common than both basal cell carcinoma and squamous cell carcinoma, but it is the most serious — for example, in the UK there were over 11,700 new cases of melanoma in 2008, and over 2,000 deaths. It is the second most common cancer in young adults aged 15–34 in the UK. Most cases are caused by over-exposure to UV rays from the sun or sunbeds. Non-melanoma skin cancers are the most common skin cancers. The majority of these are basal cell carcinomas. These are usually localized growths caused by excessive cumulative exposure to the sun and do not tend to spread.

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