Tuesday, May 4, 2010

Skin Cancer Facts

Skin Cancer Facts – provided by The Skin Cancer Foundation

GENERAL

  • Skin cancer is the most common form of cancer in the United States. More than 3.5 million cases in two million people are diagnosed annually.37
  • Each year there are more new cases of skin cancer than the combined incidence of cancers of the breast, prostate, lung and colon.3
  • One in five Americans will develop skin cancer in the course of a lifetime.26
  • Basal cell carcinoma (BCC) is the most common form of skin cancer; an estimated 2.8 million BCCs are diagnosed annually in the US.38 BCCs are rarely fatal, but can be highly disfiguring if allowed to grow.
  • Squamous cell carcinoma (SCC) is the second most common form of skin cancer. An estimated 700,000 cases are diagnosed each year in the US,39resulting in approximately 2,500 deaths.2
  • Basal cell carcinoma and squamous cell carcinoma are the two major forms of non-melanoma skin cancer. Between 40 and 50 percent of Americans who live to age 65 will have either skin cancer at least once.7
  • In 2004, the total direct cost associated with the treatment for non-melanoma skin cancers was more than $1 billion.14
  • About 90 percent of non-melanoma skin cancers are associated with exposure to ultraviolet (UV) radiation from the sun.30
  • Up to 90 percent of the visible changes commonly attributed to aging are caused by the sun.16
  • Contrary to popular belief, 80 percent of a person's lifetime sun exposure is not acquired before age 18; only about 23 percent of lifetime exposure occurs by age 18.8

Lifetime UV Exposure in the United States

Ages

Average Accumulated Exposure*

1-18

22.73 percent

19-40

46.53 percent

41-59

73.7 percent

60-78

100 percent

*Based on a 78 year lifespan

MELANOMA

  • The vast majority of mutations found in melanoma are caused by ultraviolet radiation.36
  • The incidence of many common cancers is falling, but the incidence of melanoma continues to rise significantly, at a rate faster than that of any of the seven most common cancers.21
  • Approximately 68,720 melanomas will be diagnosed this year, with nearly 8,650 resulting in death.3
  • Melanoma accounts for about three percent of skin cancer cases,31 but it causes more than 75 percent of skin cancer deaths.32
  • Melanoma mortality increased by about 33 percent from 1975-90, but has remained relatively stable since 1990.21
  • Survival with melanoma increased from 49 percent between 1950 and 1954 to 92 percent between 1996 and 2003.21
  • More than 20 Americans die each day from skin cancer, primarily melanoma. One person dies of melanoma almost every hour (every 62 minutes).3
  • The survival rate for patients whose melanoma is detected early, before the tumor has penetrated the epidermis, is about 99 percent.34 The survival rate falls to 15 percent for those with advanced disease.3
  • Melanoma is the fifth most common cancer for males and sixth most common for females.3
  • Women aged 39 and under have a higher probability of developing melanoma than any other cancer except breast cancer.3
  • Melanoma is the most common form of cancer for young adults 25-29 years old and the second most common form of cancer for adolescents and young adults 15-29 years old.18
  • About 65 percent of melanoma cases can be attributed to ultraviolet (UV) radiation from the sun.30
  • One in 55 people will be diagnosed with melanoma during their lifetime.19
  • One blistering sunburn in childhood or adolescence more than doubles a person's chances of developing melanoma later in life.4
  • A person's risk for melanoma doubles if he or she has had five or more sunburns at any age.5

MEN / WOMEN

  • The majority of people diagnosed with melanoma are white men over age 50.19
  • Five percent of all cancers in men are melanomas; Four percent of all cancers in women are melanomas.3
  • Contrary to popular belief, recent studies show that people receive a fairly consistent dose of ultraviolet radiation over their entire lifetime. Adults over age 40, especially men, have the highest annual exposure to UV.8
  • Between 1980 and 2004, the annual incidence of melanoma among young women increased by 50 percent, from 9.4 cases to 13.9 cases per 100,000 women.35
  • The number of women under age 40 diagnosed with basal cell carcinoma has more than doubled in the last 30 years; the squamous cell carcinoma rate for women has also increased significantly.9
  • Until age 39, women are almost twice as likely to develop melanoma as men. Starting at age 40, melanoma incidence in men exceeds incidence in women, and this trend becomes more pronounced with each decade.17
  • One in 39 men and one in 58 women will develop melanoma in their lifetime.3
  • Melanoma is one of only three cancers with an increasing mortality rate for men.17

INDOOR TANNING

  • Ultraviolet radiation (UVR) is a proven human carcinogen, according to the U.S. Department of Health and Human Services.10
  • Frequent tanners using new high-pressure sunlamps may receive as much as 12 times the annual UVA dose compared to the dose they receive from sun exposure.10
  • Nearly 30 million people tan indoors in the U.S. every year12; 2.3 million of them are teens.15
  • On an average day, more than one million Americans use tanning salons.22
  • Seventy one percent of tanning salon patrons are girls and women aged 16-29.13
  • First exposure to tanning beds in youth increases melanoma risk by 75 percent.11
  • People who use tanning beds are 2.5 times more likely to develop squamous cell carcinoma and 1.5 times more likely to develop basal cell carcinoma.20
  • The indoor tanning industry has an annual estimated revenue of $5 billion.15

PEDIATRICS

  • Melanoma accounts for up to three percent of all pediatric cancers.24
  • Between 1973 and 2001, melanoma incidence in those under 20 rose 2.9 percent.28
  • Melanoma is seven times more common between the ages of 10 and 20 than it is between 0 and 10 years.23
  • Diagnoses - and treatment - are delayed in 40 percent of childhood melanoma cases.24
  • Ninety percent of pediatric melanoma cases occur in girls aged 10-19.23

ETHNICITY

  • Asian American and African American melanoma patients have a greater tendency than Caucasians to present with advanced disease at time of diagnosis.6
  • The average annual melanoma rate among Caucasians is about 22 cases per 100,000 people. In comparison, African Americans have an incidence of one case per 100,000 people. However, the overall melanoma survival rate for African Americans is only 77 percent, versus 91 percent for Caucasians.21
  • While melanoma is uncommon in African Americans, Latinos, and Asians, it is frequently fatal for these populations.6
  • Melanomas in African Americans, Asians, Filipinos, Indonesians, and native Hawaiians most often occur on non-exposed skin with less pigment, with up to 60-75 percent of tumors arising on the palms, soles, mucous membranes and nail regions.25
  • Basal cell carcinoma (BCC) is the most common cancer in Caucasians, Hispanics, Chinese, and Japanese, and other Asian populations.25
  • Squamous cell carcinoma (SCC) is the most common skin cancer among African Americans and Asian Indians. 25
  • Among non-Caucasians, melanoma is a higher risk for children than adults: 6.5 percent of pediatric melanomas occur in non-Caucasians.23

Sources

1. "Squamous Cell Carcinoma." MayoClinic.com. 8 March 2007. 15 April 2008. Link.

2. "Squamous Cell Carcinoma." American Academy of Dermatology. 15 April 2008.Link.

3. American Cancer Society. Cancer Facts & Figures 2009. Atlanta: American Cancer Society; 2009.

4. Lew RA, Sober AJ, Cook N, Marvell R, Fitzpatrick TB. Sun exposure habits in patients with cutaneous melanoma: a case study. J Dermatol Surg Oncol, 1983; 12:981-6.

5. Pfahlberg A, Kolmel KF, Gefeller O. Timing of excessive ultraviolet radiation and melanoma: epidemiology does not support the existence of a critical period of high susceptibility to solar ultraviolet radiation-induced melanoma. British Journal of Dermatology, March 2001; 144; 3:471.

6. Cress RD, Holly EA. Incidence of cutaneous melanoma among non-Hispanic whites, Hispanics, Asians, and blacks: an analysis of California cancer registry data, 1988-93.Cancer Causes Control 1997; 8:246-52.

7. "Sun Protection." National Cancer Institute's Cancer Trends Progress Report - 2007 Update. 15 April 2008. Link.

8. Godar DE, Urbach F, Gasparro FP, van der Leun JC. UV Doses of Young Adults.Photochemistry and Photobiology, 2003, 77(4): 453-457.

9. Christenson LJ, Borrowman TA, Vachon CM, Tollefson MM, Otley CC, Weaver AL, Roenigk RK. Incidence of basal cell and squamous cell carcinomas in a population younger than 40 years. JAMA. 2005;294:681-690.

10. "11th ROC: Ultraviolet Radiation Related Exposures." 27 January 2005. U.S. Department of Health & Human Services. 15 April 2008. Link.

11. The International Agency for Research on Cancer Working Group on artificial ultraviolet (UV) light and skin cancer. The association of use of sunbeds with cutaneous malignant melanoma and other skin cancers: Asystematic review.International Journal of Cancer 2006; 120:1116-1122.

12. Kwon HT, Mayer JA, Walker KK, Yu H, Lewis EC, Belch GE. Promotion of frequent tanning sessions by indoor tanning facilities: two studies. J Am Acad Dermatol 2003; 46:700-5.

13. Swerdlow AJ, Weinstock MA. Do tanning lamps cause melanoma? An epidemiologic assessment. J Am Acad Dermatol 1998; 38:89-98.

14. Bickers DR, Lim HW, Margolis D et al. The burden of skin diseases: 2004. J Am Acad Dermatol. 2006; 55: 490-500.

15. Demierre MF. Time for the national legislation of indoor tanning to protect minors.Arch Dermatol 2006; 139:520-4.

16. Taylor CR et al. "Photoaging/Photodamage and Photoprotection" J. of American Academy of Dermatology, 1990: 22

17. Ahmedin Jemal, Rebecca Siegel, Elizabeth Ward, Taylor Murray, Youngping Hao, Jiaquan Xu, and Michael J. Thun. Cancer Statistics, 2008. CA Cancer J Clin 2008 58: 76.

18. Cancer Epidemiology in Older Adolescents & Young Adults. SEER AYA Monograph Pages 53-63. 2007.

19. Melanoma of the Skin, Cancer Fact Sheets, National Cancer Institute, SEER Database, 2008. Link.

20. Karagas MR, Stannard VA, Mott LA, Slattery MJ, Spencer SK, and Weinstock MA. Use of Tanning Devices and Risk of Basal Cell and Squamous Cell Skin Cancers. J. Natl. Cancer Inst. 2002 94: 224; doi:10.1093/jnci/94.3.224

21. SEER Cancer Statistics Review, 1975-2004 (NCI) Link.

22. Spencer JM, Amonette RA. Indoor tanning: Risks, benefits, and future trends. J AM Acad Dermatol 1995; 33:288-98.

23. Lange JR., Palis BE, Chang DC, Soong S, Balch CM. Melanoma in Children and Teenagers: An Analysis of Patients From the National Cancer Data Base. J. Clin. Oncol.2007; 25:1363-8.

24. Ferrari A, Bono A, Baldi M, et al. Does Melanoma Behave Differently in Younger Children Than in Adults? A Retrospective Study of 33 Cases of Childhood Melanoma From a Single Institution. Pediatrics. 2005; 115:649-57.

25. Gloster HM, Neal K. Skin Cancer in Skin of Color. J Am Acad Dermatol 2006; 55:741-60.

26. Robinson JK. Sun Exposure, Sun Protection, and Vitamin D. JAMA 2005; 294: 1541-43.

27. Elwood JM, Jopson J. Melanoma and Sun Exposure: An Overview of Published Studies. Int J Cancer. 1997; 73: 198-203.

28. Strous JJ, Fears TR, Tucker MA, Wayne AS. Pediatric melanoma: risk factor and survival analysis of the surveillance, epidemiology and end results database. J Clin Oncol 2005; 23:4735-41.

29. "What is Squamous and Basal Cell Skin Cancer?" American Cancer Society. 5 May 2008. Link.

30. Armstrong, B.K., and A. Kricker, How much melanoma is caused by sun exposure?,Melanoma Research, 1993: 3:395-401.

31. "How Many People Get Melanoma Skin Cancer?" American Cancer Society. 13 May 2008. Link.

32. "The Burden of Skin Cancer." National Center for Chronic Disease Prevention and Health Promotion. 13 May 2008. Link.

33. Conti EM, Cercato MC, Gatta G, et al. Childhood Melanoma in Europe since 1978: a population-based survival study. Eur J Canc 2001; 37:780-4.

34. Huang CL, Halpern AC. Management of the patient with melanoma. In: Rigel DS, Friedman RJ, Dzubow LM, Reintgen DS, Bystryn J-C, Marks R, eds. Cancer of the Skin. New York, NY: Elsevier Saunders; 2005:265-75.

35. Perdue, Mark. Increase in melanoma cases among young American women. J Investigative Dermatology 2008.

36. Pleasance ED, Cheetham RK, Stephens PJ, et al. A comprehensive catalogue of somatic mutations from a human cancer genome. Nature 2009.

37. Howard W. Rogers, MD, PhD, Martin A. Weinstock, MD, PhD, et al. Incidence Estimate of Nonmelanoma Skin Cancer in the United States, 2006. Archives of Dermatology 2010.

38. Rogers, Howard. “Your new study of nonmelanoma skin cancers.” Email to Mark Teich. March 31, 2010.

39. Rogers, Howard. “Your new study of nonmelanoma skin cancers.” Email to Mark Teich. April 1, 2010.

These facts and statistics have been reviewed by

David Polsky, MD, Assistant Professor of Dermatology and Pathology, New York University Medical Center

and

Steven Q. Wang, MD, Director of Dermatologic Surgery and Dermatology, Memorial Sloan-Kettering Cancer Center, Basking Ridge, NJ.

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