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Thursday, November 18, 2010

"Skin Cancer"

Skin neoplasms are growths on the skin which can have many causes.The three most common skin cancers are basal cell cancer,squarmous 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 is usually clearly visible.This makes most skin cancers detectable in the early stages.Unlike many other cancers,including those originating in the lung,pancreas,and stomach,only a small minority of those afflicted will actually die of the disease.[1]In fact,through it can be disfiguring,except for melanoma,skin cancer is rarely fatal.Skin cancer represents the most commonly diagnosed cancer,surpassing lung,breasts,colorectal,and prostate cancer.[1]Melanoma is less common than basal cell carcinoma and squamous cell carcinoma,but it is the most serious-for example,in the UK there are 9,500 new cases melanoma each year,and 2,300 deaths.[2]It is the most common cancer in the young population(20-39 age group).[3]Most cases are caused by long periods of exposure to the sun[3].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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