SKIN CANCER

How Cancer Occurs

Cancer develops only in cells with damaged genes (mutations). If the genes that regulate the cell cycle are

damaged, the cells will divide out of control Mutations can be inherited

or caused by exposure to: Low-dose radiation Drugs Toxic chemicals

Infection with certain viruses can cause mutations.

Lifestyle plays a major role in cancer prevention.

Skin Cancer • Related to exposure to ultraviolet (UV)

radiation from the sun as well as tanning beds.

• Three types of UV radiation: UVA, UVB, and UVC.

• All types are harmful and have potential to cause skin cancer.

• UVA is associated with immediate tanning, skin cancer formation, and premature aging effects.

• UVB is associated with delayed tanning and burning; also contributes to premature aging (most is filtered by the atmosphere)

• UVC is the most damaging but it is completely filtered by earth’s atmosphere

• http://www.who.int/uv/faq/whatisuv/en/index2.html

Skin Cancer (continued)– Artificial UV sources may also generate

UVC rays UVC is potent cancer-causing radiation Earth’s atmosphere filters natural UVC

Prevention Limit sun exposure Use sunscreens Wear protective clothing when exposed to

sunlight Avoid artificial sources of UV light (i.e.,

tanning beds).

Types of Skin Cancer: Melanoma

If you are high risk for malignant melanoma, check skin regularly for skin legions that:

Are asymmetrical (A) Have irregular borders (B) Have multiple colors (C) Have a diameter greater than pencil eraser (D)

Prevention Limit sun exposure Use sunscreens Wear protective clothing when exposed to

sunlight Avoid artificial sources of UV light (i.e., tanning

beds)

Reducing Skin Cancer Risk Follow ACS’s recommendations for cancer

screening tests. Know warning signs of cancer and see your

health care provider immediately if you detect any.

When in the sun, takes steps to limit UV radiation exposure.

Avoid unnecessary exposure to ionizing radiation, such as x-rays and UV light.

Don’t lie in the sun or tanning beds. Avoid direct sun exposure between 10 a.m.

and 4 p.m.