Squamous cell carcinoma is a form of skin cancer. It is the second most common form of skin cancer.
The cancer develops in the uppermost layer of skin cells. Squamous cell carcinoma usually grows slowly. It is rarely fatal if treated early. However, the cancer can be lethal if it spreads beyond the skin.
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Cancer occurs when cells in the body divide without control or order. Eventually these uncontrolled cells form a growth or tumor. The growths invade and take over nearby tissue. It is not clear exactly what causes these problems in the cells but it is probably a combination of genetics and the environment.
Areas of skin that are damaged have a higher risk of cancer. Skin that is regularly exposed to the sun is more likely to develop skin cancer. Squamous cell carcinoma may also develop in skin that has scars, burns, or exposure to chemicals or radiation.
Factors that may increase your chance of developing squamous cell carcinoma include:
The doctor will ask about your symptoms and medical history. A physical exam will be done.
The skin growth will be examined. A sample of the growth will be taken and examined for cancer cells. This will help determine the stage and type of the cancer. The information will be used to guide treatment and make a prognosis.
Talk with your doctor about the best treatment plan for you. Options include:
For people who are not able to have surgery, other treatment options include:
To help reduce the chance of squamous cell carcinoma:
American Academy of Dermatology
American College of Mohs Micrographic Surgery
Canadian Dermatology Association
Canadian Cancer Society
Alberta Provincial Cutaneous Tumour Team. Prevention of skin cancer. Edmonton (Alberta): CancerControl Alberta; 2013 Feb. 27 p. (Clinical practice guideline; no. CU-014). Available at: http://www.guideline.gov/content.aspx?id=48130#Section420. Accessed February 25, 2015.
Jerant A, Johnson J, Sheridan CD, Caffrey TJ. Early detection and treatment of skin cancer. Am Fam Physician. 2000;62(2):357-368.
Saraiya M, Glanz K, Briss P, et al. Preventing skin cancer. MMWR. 2003;52(RR15):1-12.
Squamous cell carcinoma. American Academy of Dermatology website. Available at: https://www.aad.org/public/diseases/skin-cancer/squamous-cell-carcinoma. Accessed February 25, 2015.
Sunscreen FAQs. American Academy of Dermatology website. Available at: https://www.aad.org/media/stats/prevention-and-care/sunscreen-faqs. Accessed February 25, 2015.
Last reviewed March 2017 by EBSCO Medical Review Board James Cornell, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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