Thursday, October 23, 2008

Skin Cancer

Skin cancer is the most common of all human cancers. Some form of skin cancer is diagnosed in more than 1 million people in the United States each year. Cancer occurs when normal cells undergo a transformation during which they grow and multiply without normal controls.As the cells multiply, they form a mass called a tumor. Tumors of the skin are often referred to as lesions. Tumors are cancerous only if they are malignant. This means that they encroach on and invade neighboring tissues because of their uncontrolled growth. Tumors may also travel to remote organs via the bloodstream or lymphatic system. This process of invading and spreading to other organs is called metastasis. Tumors overwhelm surrounding tissues by invading their space and taking the oxygen and nutrients they need to survive and function. the skin cancer treatment:Treatment for basal cell carcinoma and squamous cell carcinoma is straightforward. Usually, surgical removal of the lesion is adequate. Malignant melanoma, however, may require several treatment methods, including surgery, radiation therapy, and chemotherapy. Because of the complexity of treatment decisions, people with malignant melanoma may benefit from the combined expertise of the dermatologist, a cancer surgeon, and an oncologist.

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