Skin Cancer Types

Learn more about the different types of skin cancer.

Recognizing Skin Cancer

Basal and squamous cell carcinomas 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.

Basal Cell Carcinoma

 

 

 

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). Basal cell carcinoma may come in many forms. It often begins as a small, pearly nodule.

Squamous Cell Carcinoma

 

 

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. Squamous cell carsinoma may begin as a red, scaly patch, a group of crusted nodules, or a sore that doesn't heal.

Malignant Melanoma

 

 

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. Malignant melanoma is often asymmetrical, with blurred or ragged edges and mottled colors.


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