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Skin cancer is the most common form of cancer in the United States. More than 500,000 new cases are reported each year—and the incidence is rising faster than any other type of cancer.
While skin cancers can be found on any part of the body, about 80 percent appear on the face, head, or neck, where they can be disfiguring as well as dangerous.
Who gets skin cancer…and why
The primary cause of skin cancer is ultraviolet radiation—most often from the sun, but also from artificial sources like sunlamps and tanning booths. In fact, researchers believe that our quest for the perfect tan, an increase in outdoor activities, and perhaps the thinning of the earth’s protective ozone layer are behind the alarming rise we’re now seeing in skin cancers.
Anyone can get skin cancer—no matter what your skin type, race or age; no matter where you live or what you do. But your risk is greater if…
- Your skin is fair and freckles easily
- You have light-colored hair and eyes.
- You have a large number of moles, or moles of unusual size or shape.
- You have a family history of skin cancer.
- You have a personal history of blistering sunburn.
- You spend a lot of time working or playing outdoors.
- You live closer to the equator, at a higher altitude, or in any place that gets intense, year-round sunshine.
- You received therapeutic radiation treatments for adolescent acne.
Types of skin cancer
By far the most common type of skin cancer is Basal Cell Carcinoma. Fortunately, it’s also the least dangerous kind—it tends to grow slowly and rarely spreads beyond its original site. Though basal cell carcinoma is seldom life threatening, if left untreated it can grow deep beneath the skin and into the underlying tissue and bone, causing serious damage (particularly if it’s located near the eye).
Squamous cell carcinoma is the next most common kind of skin cancer, frequently appearing on the lips, face, or ears. It sometimes spreads to distant sites, including lymph nodes and internal organs. Squamous cell carcinoma can become life threatening if it’s not treated.
A third form of skin cancer, malignant melanoma, is the least common, but its incidence is increasing rapidly, especially in the Sunbelt states. Malignant melanoma is also the most dangerous type of skin cancer. If discovered early enough, it can be completely cured. If it’s not treated quickly, however, malignant melanoma may spread throughout the body and is often deadly.
Other skin growths you should know about
Two other common types of skin growths are moles and keratosis.
Moles are clusters of heavily pigmented skin cells, either flat or raised above the skin surface. While most pose no danger, some—particularly large moles present at birth—or those with mottled colors and poorly defined borders—may develop into malignant melanoma. Moles are frequently removed for cosmetic reasons, or because they’re constantly irritated by clothing or jewelry (which can sometimes cause pre-cancerous changes).
Seborheic or or actinic keratosis are rough, red or brown, scaly patches on the skin. They are usually found on areas exposed to the sun, and sometimes develop into squamous cell cancer.
Recognizing skin cancer
Basal and squamous cell carcinoma can vary widely in appearance. The cancer may begin as small, white or pink nodule or bumps; it can be smooth and shiny, waxy, or pitted on the surface. Or it might appear as a red spot that’s rough, dry, or scaly; a firm, red lump that may form a crust; a crusted group of nodules; a sore that bleeds or doesn’t heal after two to four weeks; or a white patch that looks like scar tissue.
Malignant melanoma is usually signaled by a change in the size, shape, or color of an existing mole, or as a new growth on normal skin. Watch for the “ABCD” warning signs of melanoma: Asymmetry—a growth with unmatched halves; Border irregularity—ragged or blurred edges; Color—a mottled appearance, with shades of tan, brown, and black, sometimes mixed with red, white, or blue; and Diameter—a growth more than 6 millimeters across (about the size of a pencil eraser), or any unusual increase in size.
If all these variables sound confusing, the most important thing to remember is this: Get to know your skin and examine it regularly, from the top of your head to the soles of your feet. (Don’t forget your back.) If you notice any unusual changes on any part of your body, have a doctor check it out.
The inside of the mouth is normally lined with a special type of skin (mucosa) that is smooth and coral pink in color. Any alteration in this appearance could be a warning sign for a pathological process. The most serious of these is oral cancer. The following can be signs at the beginning of a pathologic process or cancerous growth:
- Reddish patches (erythroplasia) or whitish patches (leukoplakia) in the mouth
- A sore that fails to heal and bleeds easily
- A lump or thickening on the skin lining the inside of the mouth
- Chronic sore throat or hoarseness
- Difficulty in chewing or swallowing
These changes can be detected on the lips, cheeks, palate and gum tissue around the teeth, tongue, face and/or neck. Pain does not always occur with pathology, and curiously, is not often associated with oral cancer. However, any patient with facial and/or oral pain without an obvious cause or reason may also be at risk for oral cancer.
We would recommend performing an oral cancer self-examination monthly and remember that your mouth is one of your body’s most important warning systems. Do not ignore suspicious lumps or sores. Please contact us so we may help.
Diagnosis and treatment
Skin cancer is diagnosed by removing all or part of the growth and examining its cells under a microscope. It can be treated by a number of methods, depending on the type of cancer, its stage of growth, and its location on your body. Small skin cancers can often be excised quickly and easily in our office.
Most skin cancers are removed surgically. Dr. Monesmith and Dr. Wood are well trained in the removal of skin cancer utilizing surgical techniques to minimize scarring. If the cancer is small, the procedure can be done quickly and easily, in an outpatient facility or in our office based surgical facility. The procedure may be a simple excision, which usually leaves a thin, barely visible scar. Or curettage and desiccation may be performed. In this procedure the cancer is scraped out with an electric current to control bleeding and kill any remaining cancer cells. This leaves a slightly larger, white scar. In either case, the risks accompanying surgery are low.
If the cancer is large, however, or if it has spread to the lymph glands or elsewhere in the body, major surgery may be required. Other possible treatments for skin cancer include cryosurgery (freezing the cancer cells), radiation therapy (using x-rays), topical chemotherapy (anti-cancer drugs applied to the skin), and Mohs surgery, a special procedure in which the cancer is shaved off one layer at a time. (Mohs surgery is performed only by specially trained physicians and often requires a reconstructive procedure as follow-up.)