1. Pages 126-127

2. ABCD Rule A  Asymmetry Two sides of pigmented mole do not match B  Border irregularity Borders of mole are not smooth C  Color Different colors in pigmented area D  Diameter Spot is larger than 6 mm in diameter © 2015 Pearson Education, Inc.

3. Skin Cancer Cancer—abnormal cell mass mitosis is no longer being controlled Two classifications: 1. Benign: doesn’t spread (encapsulated) 2. Malignant: 1. Metastasizes (spreads) to other parts of the body Skin cancer is the most common type of cancer © 2015 Pearson Education, Inc.

4. Types of Skin Cancers: Basal Cell

5. Basal Cell Carcinoma Least malignant Most common type Arises from stratum basale © 2015 Pearson Education, Inc.

6. (a) Basal cell carcinoma

7. Squamos Cell Carcinoma Metastasizes to lymph nodes if not removed Early removal allows a good chance of cure Believed to be sun-induced Arises from stratum spinosum © 2015 Pearson Education, Inc.

8. (b) Squamous cell carcinoma

9. Malignant Melanoma Most deadly Cancer of melanocytes Metastasizes rapidly to lymph and blood vessels Detection uses ABCD rule ** there is such thing as a benign melanoma- this is just another name for a mole © 2015 Pearson Education, Inc.

10. (c) Melanoma

11. ABCD Rule A  Asymmetry Two sides of pigmented mole do not match B  Border irregularity Borders of mole are not smooth C  Color Different colors in pigmented area D  Diameter Spot is larger than 6 mm in diameter © 2015 Pearson Education, Inc.