2.  Neoplasms or tumors can be classified as benign or malignant  Benign = noncancerous  Malignant = cancerous

3. Examples of Benign or Noncancerous Tumors

4. Dermatofibroma – fibrous tumor; painless, round, firm, red

5. Hemangioma – benign tumor of dilated blood vessels

7. Keloid – scar formed after surgery or injury; raised, thickened area

8.  There are many different types of skin cancer such as: basal cell carcinoma, squamous cell carcinoma, and malignant melanoma

9.  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

10. Causes of Skin Cancer  Exposure to sun  Prolonged use of tanning beds  Irritating chemicals  radiation

11. Treatment of Skin Cancer  Skin cancer is usually treated by surgical removal and/or radiation

12. 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

13. Basal Cell Carcinoma

16. Squamous Cell Carcinoma  Epidermal cancer that may go into deeper tissue but does not generally metastasize

18. Squamous Cell Carcinoma

19. Malignant Melanoma  Dangerous form of skin cancer caused by an overgrowth of melanin. May metastasize.

20. Malignant Melanoma

23. 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