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Skin Cancer:. Giana Bowers Mr. Case. Skin Cancer. Most common cancer in US Fastest increasing cancer in US 1,000,000 people have some form of skin cancer . Skin Cancer. Three main types -- basal-cell -- squamous-cell -- melanoma

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Skin cancer

Skin Cancer:

Giana Bowers

Mr. Case

Skin cancer

Skin Cancer

  • Most common cancer in US

  • Fastest increasing cancer in US

  • 1,000,000 people have some form

  • of skin cancer

Skin cancer

Skin Cancer

  • Three main types

  • -- basal-cell

  • -- squamous-cell

  • -- melanoma

  • The main difference between melanoma and other skin cancers is that melanoma can

  • spread to distant body sites including the lungs, liver or brain.

Skin cancer

Basal Cell Carcinoma

Skin cancer

Squamous Cell Carcinoma

Skin cancer


*Seventh most common cancer in the

United States.

*One out of every 105 Americans born in 1991

will develop malignant melanoma

(compared to 1 out of 1,500 in 1935).

*The number of new cases of melanoma has more

than doubled since 1973.

Skin cancer

Melanoma (cont.)

  • Most common cancer in young adults age

  • 25-29

  • Among women age 30-35, incidence is

  • exceeded only by breast cancer

  • Incidence increasing 4% annually, higher than

  • any other cancer

  • On average, one melanoma death in the U.S.

  • per hour

Skin cancer

Top 8 Invasive Cancers

in the U.S.









Skin cancer


  • Asymmetry

  • Border

  • Color

  • Diameter

Skin cancer


One half does not match

the other half.

Skin cancer

Border irregularity

The edges are ragged, notched,

or blurred.

Skin cancer


The pigmentation is not uniform.

Shades of tan, brown, or black are

present. A mottled appearance.

Skin cancer


Greater than ¼ inch. Any sudden

or continuing increase in size is

of special concern.

Skin cancer

Normal Mole

Skin cancer

Malignant Mole

Skin cancer

Ultraviolet (UV) Radiation

  • The sun radiates energy over a broad spectrum of

  • wavelengths. UV radiation, which has a shorter

  • wavelength than visible blue or violet light, is

  • responsible for sunburns and other health effects:

  • Skin cancer

  • Cataracts

  • Suppression of the immune system

  • Premature aging of the skin

Skin cancer


An increased risk of melanoma

related to the frequency of sunburns

during all periods of life. More than five

sunburns doubled the melanoma risk,

irrespective of the time in life.

Skin cancer

Prevention of Skin Cancer

Cover up

Use Sunscreen always!

Wear hats

Wear sunglasses

Avoid Tanning Beds

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