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SKIN CANCER Neoplasms or tumors can be classified as benign or malignant Benign = noncancerous Malignant = cancerous Examples of Benign or Noncancerous Tumors Dermatofibroma – fibrous tumor; painless, round, firm, red Hemangioma – benign tumor of dilated blood vessels Keloid – scar formed after surgery or injury; raised, thickened area There are many different types of skin cancer such as: basal cell carcinoma, squamous cell carcinoma, and malignant melanoma Skin cancer usually develops from a mole or nevus (a growth or mark on the skin) However that mole or mark changes in color, size, shape, or texture Bleeding or itching of a mole can also indicate skin cancer Causes of Skin Cancer Exposure to sun Prolonged use of tanning beds Irritating chemicals radiation Treatment of Skin Cancer Skin cancer is usually treated by surgical removal and/or radiation Basal Cell Carcinoma Tumor of the basal cell layer of the epidermis Common type of skin cancer that rarely metastasizes (spreads) Usually caused by sun exposure Basal Cell Carcinoma Squamous Cell Carcinoma Epidermal cancer that may go into deeper tissue but does not generally metastasize Squamous Cell Carcinoma Malignant Melanoma Dangerous form of skin cancer caused by an overgrowth of melanin. May metastasize. Malignant Melanoma Kaposi’s Sarcoma Form of skin cancer frequently seen in AIDS patients. Brownish purple pustules that spread from the skin and metastasize to internal organs Named for Moritz Kaposi – Austrian dermatologist