Skin cancer is when cancer cells grow in the skin.
The two most common kinds of skin cancer are:
Basal Cell Carcinoma
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It is important that skin cancers be found and treated early. If left untreated, they can quickly invade and destroy nearby tissue.
Cancer occurs when skin cells in the body divide without control or order. When cells keep dividing uncontrollably when new cells are not needed, a mass of tissue forms. This is called a growth or tumor. Unlike benign tumors, malignant tumors can invade nearby tissues and spread to other parts of the body.
Basal and squamous cell cancers are more common in men and in people over 50 years old. These cancers are most likely to occur in people with:
Other factors that increase your risk of skin cancer include:
Most skin cancers do not cause symptoms. The most common first symptom of skin cancer is a change in the skin.
Basal cell carcinoma may appear as a:
Squamous cell carcinoma may appear as a:
Skin cancers can occur anywhere, but are more common on places that are exposed to the sun.
Your doctor will ask about your symptoms and medical history. A physical exam will be done.
You may have a biopsy. The sample can then be examined for cancer cells.
In cases where the growth is very large, or has been present for a long time, the doctor will carefully check the lymph nodes in the area. Your doctor may recommend more tests to determine if the cancer has spread to other parts of the body.
Talk to your doctor about the best treatment for you. Treatment may include one or more of the following:
Many skin cancers can be cut from the skin quickly and easily. In fact, the cancer is sometimes completely removed during biopsy, and no further treatment is needed. Surgical techniques include:
This involves scooping the cancer out with a curette, an instrument with a sharp, spoon-shaped end. The area is treated with an electric current to control bleeding. This also kills any cancer cells remaining around the edge of the wound. This technique is used for very small or superficial cancers.
Mohs surgery is the removal of all of the cancerous tissue. The surgeon will try to remove as little healthy tissue as possible. This method is used to remove:
The procedure is done by specially trained dermatologic Mohs surgeons. The cancer is shaved off one thin layer at a time. Each layer is checked under a microscope for cancer cells until the entire tumor is removed.
Liquid nitrogen is used to freeze and kill the abnormal cells. After the area thaws, the dead tissue falls off. More than one freezing may be needed to remove the growth completely. This method may be used to treat precancerous skin conditions (actinic keratoses) and certain small or superficial skin cancers.
Laser therapy uses a narrow beam of light to remove or destroy cancer cells. This method is sometimes used for cancers in the outer layer of skin.
Radiation therapy uses radiation to kill cancer cells and shrink tumors.
Topical chemotherapy is the use of drugs to kill cancer cells. The drugs can be creams or lotions. This method is successful in treating precancerous conditions and cancers limited to the outer layer of the skin. The most common topical chemotherapy used is a form of 5-fluorouracil (5-FU).
Medicines such as imiquimod increase your bodies own reponse to fight the cancer cells.
Take the following precautions to find skin cancer early:
American Academy of Dermatology
American Cancer Society
Canadian Cancer Society
Canadian Dermatology Association
Basal cell carcinoma of the skin. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what . Updated January 17, 2013. Accessed April 10, 2013.
Skin cancer: basal and squamous cell. American Cancer Society website. Available at: http://www.cancer.... . Updated January 17, 2013. Accessed April 10, 2013.
Skin cancer. National Cancer Institute website. Available at: http://www.cancer.gov/cancertopics/types/skin . Accessed April 10, 2013.
Squamous cell carcinoma. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what . Updated december 6, 2013. Accessed April 10, 2013.
Last reviewed June 2013 by Mohei Abouzied, MD
Last Updated: 6/24/2013
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