Friday, January 7, 2011

Three Main Types of Skin Cancer

There are three main types of skin cancer: basal cell carcinoma, squamous and malignant melanoma. The first two grow slowly and are easy to care for, but the malignant melanoma is a cancer harmful, to rapid development that spreads very quickly. The official figures of the United Kingdom about 6000 cases of melanoma each year and 62000 cases of other types of skin cancer.
 
The incidence of melanoma is increasing, probably due to the increased exposure to sunlight but also thanks to better diagnosis. The 62000 other types of skin cancer is underestimated because these cancers grow slowly and often in older people are not even diagnosed. Roughly three out of four cases of non-melanoma cancer are carcinoma spinocellulare ones and a quarter.
 
 
 
What are the risk factors for skin cancer? For all types of cancer and prolonged exposure to sunlight or tanning is the main risk. Research on malignant melanoma suggests that this type of exposure in childhood put people in a position to develop melanoma in a more advanced age. There are many other things that increase the risk of skin cancer: have a very clear complexion, scotta easily, have many moles (over 50) on the body, have had in the past a skin cancer, the fact that there have been cases in family and being treated with anti-rejection (e.g. after an organ transplantation).  
The exposure to radiation or prolonged exposure to chemicals such as coal tar, soot, tar, asphalt. the creosote, paraffin wax or arsenic can increase the cancer risk of non-melanoma. The majority of cases of melanoma occurs on the head, neck, arms and back-the part of the skin that is more often exposed to sunlight.In most cases these are very dark black, but sometimes can be more clear, brown or even to dots. The surface is usually elevated and sometimes rough circular shape does not have a regular but some may seem very similar to circles. In the early stages look like moles, spent but with a jagged outline or various shades of colour. Sometimes seem to be in bloody, which open or that are dele scabs. In any case, the most important thing to remember is that melanoma usually change color under development. Any point that change colour or form should be pointed to your doctor.
 


 
The vast majority of cases of basal cell carcinoma occurs on the face. Start as pink dots, pearls or polishes often oval or circular. As they grow they become dishes you rise with rounded edges and can develop scabs. Then begin to bleed from the Centre and develop ulcers, These are called rodent ulcers and if ignored for a long enough period can become rather large and eat away the skin and underlying tissues. The spinocellulari carcinoma is most common in the limbs, head and body. Are pink and are irregular in shape, often with a hard surface scaly or rough though sometimes can become ulcers. The edges are sometimes raised. Can be soft to the touch. The malignant melanoma can be one of the most dangerous types of cancer. Spread throughout the surrounding tissue, but some grow faster and more ' in the sviuppano ' of others. If the tumor is diagnosed late treatment cannot cure cancer. The spinocellulari carcinoma spreads like altte so slowly that are not very dangerous. Even those who are widening more quickly you can effectively cure as long as are diagnosed reasonably soon. The basal cell carcinoma not spreading almost never apart from the slow growth of rodent ulcer itself. Even at advanced stage treatment is almost always successful. There are some rare hereditary cases of skin cancer that make people very sensitive to sunlight and where it is much more likely to develop any of the skin cancers. People receive their hereditary skin type and skin cancer is more common in clear complexions and lentigginose. In addition there is good evidence that if you have close relatives (brother, sister, parent, child) with a skin cancer have an approximately double compared to normal risk of developing this type of cancer.

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