What basal cell carcinoma is

Basal cell carcinoma (BCC) is a type of skin cancer that starts in the basal cells — the round cells in the lowest layer of your epidermis, the outer layer of skin. It is the most common form of skin cancer in the United States. BCC grows slowly and rarely spreads to other parts of the body, which makes it far less dangerous than melanoma, but it still needs treatment to prevent it from growing deeper into the skin and damaging surrounding tissue.

BCC usually appears as a small, shiny bump or a flat, scaly patch on skin that gets regular sun exposure — most often the face, ears, scalp, shoulders, or back. The spot may be skin-colored, pink, red, or slightly darker than surrounding skin. Some people describe it as looking waxy or pearly. It may bleed easily or not heal after a minor injury.

Because BCC grows slowly and stays in one place for months or years before spreading, catching it early makes treatment simpler and less likely to leave a noticeable scar. However, if left untreated, BCC can grow deeper and wider, eventually reaching bone or cartilage underneath the skin.

Key Takeaways

  • Basal cell carcinoma is the most common skin cancer and grows slowly, rarely spreading beyond the original spot.
  • It usually appears as a shiny bump, waxy patch, or sore that does not heal, most often on the face, ears, or scalp.
  • A dermatologist diagnoses BCC by examining the spot and taking a small tissue sample (biopsy) to confirm the diagnosis.
  • Treatment options include surgical removal, freezing, burning, or topical creams, depending on the size and location of the spot.
  • People who have had BCC are at higher risk of developing another one, so regular skin checks and sun protection are important.

Who gets basal cell carcinoma

BCC develops when basal cells in the skin grow abnormally, usually after years of sun exposure. The main risk factor is ultraviolet (UV) radiation from the sun or tanning beds. People with fair skin, light hair, and light eyes are at higher risk because they have less melanin — the pigment that protects skin from UV damage. However, BCC can develop in people with darker skin as well, though it is less common.

Other factors that increase your risk include a personal or family history of skin cancer, a weakened immune system, exposure to certain chemicals like arsenic, or a genetic condition that makes skin more sensitive to sun damage. Age also plays a role: BCC is more common in people over 50, though it can appear at any age in people who have had significant sun exposure.

People who work outdoors, live in sunny climates, or spent time in the sun without protection during childhood face higher risk. Using tanning beds before age 35 also increases the chance of developing BCC later in life.

How doctors identify basal cell carcinoma

The first step is usually a visual examination. A dermatologist — a doctor who specializes in skin conditions — will look at the spot and ask about how long it has been there, whether it bleeds or itches, and your sun exposure history. They may use a magnifying glass or a dermatoscope (a handheld device that magnifies and illuminates the skin) to see the spot more clearly.

If the spot looks suspicious, the doctor will perform a biopsy, which means removing a small sample of skin tissue to examine under a microscope. This is the only way to confirm that the spot is actually BCC and not another condition. The biopsy is usually done in the office using a local anesthetic (numbing medicine) so you do not feel pain. The procedure takes just a few minutes.

After the biopsy, the tissue goes to a laboratory where a pathologist examines it under a microscope and confirms whether it is BCC. You will usually get results within one to two weeks. If it is BCC, the pathologist will also note what type it is — superficial, nodular, or infiltrative — which helps your doctor decide on the best treatment.

Treatment options for basal cell carcinoma

The goal of treatment is to remove all the cancer cells while preserving as much healthy skin as possible. The best treatment depends on the size, location, and type of BCC, as well as your age and overall health.

Surgical excision is the most common treatment. The dermatologist removes the spot and a margin of healthy skin around it, then closes the wound with stitches. This is done under local anesthetic in the office and takes 15 to 30 minutes. The removed tissue is examined under a microscope to make sure all cancer cells are gone.

Mohs micrographic surgery is used for larger spots, spots in cosmetically sensitive areas like the face, or spots that have come back after previous treatment. In this procedure, the surgeon removes the cancer layer by layer, examining each layer under a microscope in real time. This allows them to remove all cancer cells while sparing as much healthy skin as possible. It takes longer than standard excision — usually two to four hours — but results in the smallest scar.

Other options include cryotherapy (freezing the spot with liquid nitrogen), electrodesiccation and curettage (scraping and burning the spot), laser therapy, or topical creams like imiquimod or 5-fluorouracil for very small, superficial spots. Your dermatologist will recommend the option that works best for your situation.

What happens after treatment

After treatment, the area will heal over one to three weeks depending on the size of the spot and the type of treatment used. You may have a bandage, scab, or mild redness. Your doctor will give you specific instructions on how to care for the wound — usually keeping it clean and dry, and protecting it from the sun.

Stitches, if used, are typically removed one to two weeks after surgery. Scarring is usually minimal, especially with Mohs surgery, but some visible mark may remain depending on the size and depth of the original spot.

Even after successful treatment, the risk of developing another BCC is significant. People who have had one BCC have about a 40 to 50 percent chance of developing another one within five years. This is why regular skin checks — either at home or with a dermatologist — are important. Many dermatologists recommend annual full-body skin examinations for people with a history of BCC.

Preventing basal cell carcinoma

The best way to prevent BCC is to limit UV exposure. This means wearing broad-spectrum sunscreen with an SPF of 30 or higher every day, even on cloudy days, and reapplying it every two hours if you are outside. Wearing protective clothing — long sleeves, pants, hats, and sunglasses — also helps, especially during peak sun hours between 10 a.m. and 4 p.m.

Avoid tanning beds entirely, as they emit UV radiation that damages skin cells. If you have already had BCC, protecting your skin from the sun becomes even more important to reduce the chance of another spot developing.

People at very high risk — such as those with a genetic condition called xeroderma pigmentosum or a severely weakened immune system — may benefit from regular dermatology visits and sometimes preventive medications. Talk to your doctor about what prevention strategy makes sense for your situation.

Frequently Asked Questions

Will basal cell carcinoma spread to other parts of my body?

BCC very rarely spreads to other parts of the body. It grows slowly in one spot and, if left untreated for years, may grow deeper into the skin and underlying tissue, but it does not typically travel through the bloodstream or lymph nodes the way melanoma can. This is why BCC is considered much less serious than other skin cancers, though it still needs treatment.

What does basal cell carcinoma look like?

BCC often appears as a shiny, pearly bump that may be skin-colored, pink, or red. It can also look like a flat, scaly patch or a sore that bleeds easily and does not heal. Some spots have a rolled edge with a depression in the center. If you notice a spot that looks unusual or has been there for more than a few weeks, see a dermatologist.

Is basal cell carcinoma curable?

Yes, BCC is highly curable when caught and treated early. Cure rates are over 95 percent with standard surgical removal. Even if BCC comes back in the same spot or develops elsewhere on the skin, it can be treated again. The main concern is preventing new spots from developing through sun protection and regular skin checks.

How long does it take to recover from basal cell carcinoma treatment?

Recovery time depends on the treatment used and the size of the spot. Most wounds heal within one to three weeks. If stitches were used, they are removed after one to two weeks. You can usually return to normal activities right away, though you should keep the wound clean and protected from the sun during healing.

Can I get basal cell carcinoma again after treatment?

Yes, people who have had BCC are at higher risk of developing another one. About 40 to 50 percent of people with a history of BCC develop another spot within five years. This is why regular skin self-exams and annual dermatology visits are recommended, along with consistent sun protection.