This site is still under development. Information, features, and some organizational
aspects of the data still need further work and will change as we continue building.

Basal Cell Carcinoma

Hover over a term you want explained. If you need more details, then click on the term and a new tab will open with a full details page.

What Basal Cell Carcinoma Means in Everyday Language

Basal cell carcinoma is a type of skin cancer that starts in the basal cells, which are tiny cells located in the lowest layer of the skin’s outer layer, called the epidermis. These basal cells normally help produce new skin cells to replace old ones. When these cells begin to grow uncontrollably, they form basal cell carcinoma. This cancer usually appears as a small, slow-growing bump or patch on the skin that may be white, flesh-colored, pink, or slightly shiny. Sometimes it can bleed or develop a crust. It most often shows up on parts of the body that get a lot of sun, like the face, neck, hands, and arms.

Why Basal Cell Carcinoma Matters in Cancer Care

Basal cell carcinoma is the most common form of skin cancer and is usually caused by long-term exposure to ultraviolet (UV) light from the sun or tanning beds. Although it rarely spreads to other parts of the body, it can grow deeper into the skin and nearby tissues if left untreated, potentially causing damage and disfigurement. Early detection and treatment are important to remove or destroy the cancer cells before they cause more serious problems. Treatments may include surgery to cut out the cancer, radiation therapy, or topical medicines that help the immune system fight the cancer. Because basal cell carcinoma grows slowly and is usually treatable, catching it early often leads to a good outcome.

What Patients Might Notice and Be Told

You might notice a new bump or patch on your skin that grows slowly, looks shiny or pearly, or sometimes bleeds or does not heal. These spots often appear on sun-exposed areas like your face or hands. During a skin exam, your doctor may point out a suspicious spot and suggest a biopsy, where a small piece of skin is taken to check for cancer cells under a microscope. If diagnosed with basal cell carcinoma, your healthcare team will discuss treatment options and what to expect. You may hear terms like “basal cell cancer” or “BCC,” which mean the same thing.

Where the Term Basal Cell Carcinoma May Appear

The term basal cell carcinoma can show up in your medical records, biopsy reports, treatment plans, or follow-up notes. It may also appear in educational materials or discussions about skin cancer. Sometimes, you might see related terms like basal cells, which refer to the normal skin cells involved, or names of treatments such as Aldara (imiquimod), a cream used for some early basal cell cancers.

What Basal Cell Carcinoma Does Not Automatically Mean

Having basal cell carcinoma does not mean the cancer has spread or is life-threatening. It is different from other skin cancers like melanoma, which can be more aggressive. Basal cell carcinoma usually grows slowly and rarely spreads to other parts of the body. However, it still requires treatment to prevent local damage. Hearing the term basal cell alone does not mean you have cancer; it simply refers to the type of skin cell involved.

Common Questions to Ask Your Care Team

If you are diagnosed with basal cell carcinoma, you might ask your doctor: What treatment options are best for me? What side effects should I expect? How can I protect my skin to prevent new skin cancers? How often should I have skin exams? Understanding your diagnosis and care plan can help you feel more in control and prepared.

Next Steps and Safety Information

This information is meant to help you understand basal cell carcinoma but does not replace personalized advice from your healthcare provider. Everyone’s situation is unique, so it’s important to talk with your doctor about what basal cell carcinoma means for you. If you notice any new, changing, or unusual spots on your skin, especially in sun-exposed areas, the best next step is to have a healthcare professional examine them. Early diagnosis and treatment can help protect your skin and health.

Sources

Public source information used for this glossary entry includes: