Skin cancer

SKIN CANCER

Skin cancer usually develops from excessive exposure to the sun's ultraviolet rays, which is why sunscreens with an SPF of 15 or above should be used when engaging in outdoor recreational activities or when one's occupation requires outdoor work. Common areas of development of skin cancers are the face, neck, and hands. There are three types of skin cancers, two of which can be lethal.

    the most common type of skin cancer is basal cell carcinoma. this cancer produces an open unclear and can be easily treated with radiation therapy or surgical removal. this cancer rarely spreads. the first dangerous type of skin cancer is squamous cell carcinoma, which produces a nodular tumor that is highly keratinized and found in the epidermis. if untreated it can spread to the dermis, metastasize and cause death. the most dangerous type of skin cancer is malignant melanoma. it is rare and associated with a mole on the skin. a mole is a grouping of melanocytes. they become cancerous and metastasis is common. the melanoma can appear as a dark nodule or a spreading flat lesion. unless treated early, this cancer is fetal...