1. Skin Cancers

2. Skin Layers ©http://www. nlm. nih

3. Basal Cell Carcinoma Originates in the lowest layer of the epidermis
Usually develops on sun exposed skin
Begins as small, shiny, raised growths on the skin
May ulcerate

4. Does not usually spread to other areas of the body, but destroys surrounding tissue

5. Basal Cell Carcinoma ©http://images. google. com/images

6. Squamous Cell Carcinoma
Originates in the middle layer of the epidermis
Begins as a red area with a scaly, crusted surface
Turns into an open sore if let untreated
Most affect only the surrounding tissue, however, some do metastasize

7. Squamous Cell Carcinoma ©http://www. southcoastmedcenter

8. Melanoma
Originates in the pigment-producing cells of the skin (MELANOCYTES)
May begin as a new pigmented growth
Most develop from existing pigmented moles (NEVI —singular NEVUS)

9. Readily spreads
Diagnosis: Biopsied and sent to pathologist for confirmation
Treatment: Surgical removal

10. Symptoms:
Change in color, shape, or size of a mole
Mole with asymmetrical border

11. Melanoma ©http://www.daviddarling.info/images/melanoma.jpg

12. Melanoma Examples ©http://content. revolutionhealth

13. Normal Melanocytes

14. Normal

15. Melanoma