Skin cancer

Content provided by Healthwise

Skin cancer

Skin cancer is the abnormal growth of skin cells. It may first appear as a new mole, a change in a growth or mole, a sore that does not heal, or an irritation of the skin.

Exposure to the sun is the most common cause of skin cancer. Problems with the body's defense system (impaired immune system) and a family history of skin cancer also increase a person's risk.

There are 3 major types of skin cancer:

Basal cell skin cancer is the most common form. It is a slow-growing cancer that seldom spreads to other parts of the body.
Squamous cell skin cancer is less common than the basal cell form. It also rarely spreads, especially if it is found and treated early. However, squamous cell skin cancer is more likely to spread than basal cell carcinoma.
Melanoma grows and spreads rapidly and can invade other organs, such as the liver, lungs, or brain. Melanoma usually begins in a mole.

Skin cancer is treated by removing the cancerous area with either surgery (excision) or freezing (cryotherapy). Chemotherapy and radiation therapy may be needed to treat an aggressive form of skin cancer or one that has spread to other parts of the body.

Credits

Author	Jeannette Curtis
Author	Caroline Rea, RN, BS, MS
Editor	Kathleen M. Ariss, MS
Editor	Susan Van Houten, RN, BSN, MBA
Associate Editor	Tracy Landauer
Associate Editor	Pat Truman
Primary Medical Reviewer	Patrice Burgess, MD - Family Medicine
Primary Medical Reviewer	Adam Husney, MD - Family Medicine
Primary Medical Reviewer	Kathleen Romito, MD - Family Medicine
Last Updated	May 25, 2007

Last updated:	May 25, 2007
Author:	Caroline Rea, RN, BS, MS
Reviewed By:	Kathleen Romito, MD - Family Medicine
Editors:	Susan Van Houten, RN, BSN, MBA, Pat Truman

This information is not intended to replace the advice of a doctor. By using AOL Body, you indicate that you have read, understood, and agreed to our Terms of Service, and AOL Body Advertising Policy. Read more about our content partners.