Skip to content

    Melanoma/Skin Cancer Health Center

    Font Size

    Melanoma Cases on the Rise

    Researcher Says Increase in Melanoma Cases Isn't Just Due to Better Screening

    Is Rise in Melanoma Due to a Change in How Melanoma Is Diagnosed?

    In a large international study, pathologists reviewed 2,665 pigmented lesions that had been originally been analyzed by pathologists from the 1930s to the 1980s. Their diagnoses matched, Rigel says.

    Is Rise in Melanoma Due to Better Ways of Counting Cancer Cases?

    The National Cancer Institute's method of counting cancer primarily relies on reports from hospitals about how many cancers are being seen in their institution each year, he says.

    "So if we were better at counting cancer, you would expect rates of all cancers to go up, which is not the case," Rigel says.

    In fact, melanoma is probably underreported, he says, as it is the only major cancer where patients are not seen in the hospital during the course of their disease.

    "I often diagnose a patient in my office and excise the skin lesion in the office so the patient never even makes it to the hospital," he says.

    A 1991 study, published in the Journal of the American Academy of Dermatology, showed that up to 19% of cases in Massachusetts were never reported. A 1997 study in the same journal showed a17% rate of underreporting in Iowa, Rigel adds.

    Melanoma: Deaths vs. Survivals

    Additional evidence for a real rise in melanoma cases comes from the fact that deaths from skin cancer are also on the rise, Rigel says. Yet at the same time, a patient's chance of surviving for at least five years from diagnosis is also on the rise.

    If more people are dying of melanoma and more people are surviving melanoma, the only mathematical option is that cases are going up faster, he says.

    Melanoma: Don't Become a Statistic

    The bottom line, Rigel says, is "how the rise in melanoma affects our patients."

    "We know the cause of melanoma is too much exposure to ultraviolet (UV) radiation, whether from the sun or indoor tanning beds and lamps. Simple behavior changes can lower your risk," he says.

    So when should you see a doctor? If a mole is growing, bleeding, crusting, or changing, he says.

    Harold S. Rabinovitz, MD, a dermatologist at the University of Miami Miller School of Medicine, says know your ABCs.

    Look at your moles and check for:

    • Asymmetry: one half unlike the other half.
    • Border: irregular, scalloped or poorly defined.
    • Color: varies from one area to another; shades of tan and brown, black; sometimes white, red or blue.
    • Diameter: the size of a pencil eraser or larger.
    • Evolving: changing in size, shape or color.

    "A mole with any of these characteristics should be brought to a dermatologist’s attention immediately," Rabinovitz says.

    1 | 2

    Today on WebMD

    Malignant melanoma
    How to spot it early.
    Woman checking out tan lines
    There’s a dark side to that strive for beauty.
    sauteed cherry tomatoes
    Fight cancer one plate at a time.
    Lung cancer xray
    See it in pictures, plus read the facts.
    12 Ways to Protect Your Skin from Melanoma
    precancerous lesions slideshow
    Do You Know Your Melanoma ABCs
    15 Cancer Symptoms Men Ignore
    screening tests for men
    Vitamin D
    Is That Mole Skin Cancer
    Brilliant sun rays