Skin cancer affects more people in the United States than any other form of cancer. It is estimated that there are 1 million cases of non-melanoma skin cancer diagnosed yearly in the United States.
Melanoma, the most serious type of skin cancer accounted for about 68,720 cases of skin cancera 2009 and most (about 8,650) of the 11,590 deaths due to skin cancer each year. This is more than twice the numberdiagnosed twenty years ago. Because of the dramatic in-releases over the past two decades, mostly because of overexposure to ultraviolet radiation from the sun, the National Cancer Institute has warned that 40 to 50 percent of all Americans who live to the age ot sixty-five will eventually develop at least one skin cancer.
There are several different types of skin cancer. The two most common skin cancer are basal cell carcinoma and squamous cell carcinoma, most people who are diagnosed with skin cancer have one or the other of these types of the disease Both are highly curable if treated early The third major type of skin cancer 1s malignant melanoma, which is a more serious disease here are approximately 15,000 new cases of malignant melanoma diagnosed each year, and hall of the patients survive six to seven years, Basal cell carcinoma is the most common of the three major types of skin cancer. It is most prevalent in blond, fair-skinned people. Unlike many other malignant growths, it does not spread until it has been present for a long pension of time. The cell damage results in an ulcer-like growth that spreads slowly as it destroys tissue.
A large, pearly-looking up, most often on the face by the nose, neck, or ears, is usually the first sign. About six weeks after it appears, the Trump becomes ulcerated, with a raw, moist center and a hard border that may bleed. Scabs continually form over the ulcer and then come off, but the ulcer never really heals. Sometimes basal cell carcinomas show up on the back chest as that sores that grow slowly. Basal cell carcinomas do not usually spread throughout the body and generally are curable. However, recurrences are common. If they are not treated, they can do substantial damage to the lower layers of skin and bone. In squamous cell carcinoma, the underlying skin cells are damaged, and this leads to the development of a tumor or lump under the skin, most often on the ears, hands, face, or lower lip. The lump may resemble a wart or a small ul-cerated spot that never heals. This type of skin cancer occurs most frequently in fair-skinned people over fifty years old. The risk is higher for thos5e who have had long-term Outdoor employment and for those who reside in sunny climates. This is a very treatable type of skin cancer if it is detected and dealt with in the early stages. Malignant melanoma is rarer than either squamous cell or basal cell carcinoma but is much more serious. With this type of skin cancer, a tumor arises from the pigment-producing cells of the deeper layers of the skin. It is estimated that as many as half of all cases of melanoma originate in moles People in some families seen to have a genetically based higher risk of developing melanoma.
They often have odd moles, called dysplastic views, that are irregular in shape and color and can be as large as half an inch in diameter Dys-plastic nevi may be precursors to skin cancer. This cancer can also appear in the form of a hew mole. In men, melanomas tend to occur anywhere Irom the neck to the waist; in women, the arms and legs seem to be affected most If not treated al an early stage, melanoma can be life-threatening. spreading through the bloodstream and lymph-phatic vessels to the mlethal018ats. however, if the disease is treated early, the chances of recovery are quite good. There are four types of melanoma, each with slightly different characteristics