Basal Cell Carcinoma
Also known as: BCC, BCC Skin Cancer, Basal Cell Skin Cancer, Basal Cell Cancer
The most common cancer in humans. Slow-growing, rarely spreads, but can cause serious tissue damage if untreated.
What to look for
Side-by-side comparison
Normal skin
No persistent bumps
Possible BCC
Pearly bump, visible vessels
Basal cell carcinoma (BCC) is the single most common form of cancer worldwide, with an estimated 3.6 million cases diagnosed annually in the United States alone. It arises from basal cells in the deepest layer of the epidermis.
The defining characteristic of BCC is that it almost never metastasizes (spreads to distant organs). However, this does not mean it is harmless - untreated BCC can grow deep into underlying tissue, damaging nerves, bones, and cartilage. When it occurs near the eyes, nose, or ears, even small tumors can cause significant disfigurement.
BCC presents in several forms. The most common is nodular BCC: a pearly or translucent bump with visible tiny blood vessels (telangiectasia), often on the face. Superficial BCC appears as a thin, pinkish-red patch, often on the trunk. Morpheaform (sclerosing) BCC looks like a flat, waxy, scar-like area with poorly defined borders - this variant is the most aggressive locally.
A key clinical sign is a sore that bleeds, crusts over, appears to heal, then reopens. This cycle of bleeding and apparent healing that repeats over weeks or months is highly characteristic of BCC.
People who have had one BCC have a 50% chance of developing another within five years. This makes regular follow-up skin examinations essential for anyone with a BCC history.
Quick self-check
Does this look like basal cell carcinoma? Answer 2 questions.
Does the spot appear pearly, translucent, or have tiny visible blood vessels?
Does it bleed, crust over, seem to heal, and then come back?
Risk factors
- Chronic cumulative sun exposure over many years (outdoor workers, sun-seekers)
- Fair skin, light hair, light eye color (Fitzpatrick types I-III)
- Age over 50, though increasingly diagnosed in younger adults
- History of severe or frequent sunburns
- Previous radiation therapy to the skin
- Long-term exposure to arsenic
- Immune-suppressing medications (organ transplant recipients have 10x risk)
- Personal or family history of skin cancer
- Gorlin syndrome (basal cell nevus syndrome) - rare genetic condition
When to see a dermatologist
- ⚠A pearly, shiny, or translucent bump - especially with tiny visible blood vessels
- ⚠A sore that bleeds, crusts, and then recurs in a cycle that repeats
- ⚠A flat, flesh-colored or slightly pink lesion resembling a scar
- ⚠A white, waxy area without a clearly defined border
- ⚠Any persistent skin change on a sun-exposed area that does not heal
Often confused with
Not sure if this is basal cell carcinoma? Compare:
Want a more detailed check?
Our full ABCDE checker evaluates 5 clinical criteria in 30 seconds.
Full ABCDE check →Frequently asked questions
Is basal cell carcinoma a serious cancer?
BCC is rarely life-threatening because it almost never spreads to other organs. However, it should not be ignored - untreated BCC can invade deep into tissue, damage nerves and bones, and cause significant disfigurement, especially on the face. Early treatment is simple and effective.
Can BCC come back after treatment?
The treated BCC itself has a high cure rate (95-99% with Mohs surgery). However, having had one BCC means you have a 50% chance of developing a new BCC somewhere else on your body within five years. Ongoing surveillance is essential.
What does early BCC look like?
The most common appearance is a small, pearly or translucent bump on sun-exposed skin, often with tiny blood vessels visible on its surface. It may also appear as a flat pinkish patch or a scar-like area. Many patients describe it as a pimple that never fully heals.
Can young people get BCC?
While BCC primarily affects people over 50, it is increasingly seen in younger adults, particularly those with significant sun exposure or tanning bed history. Cases in people in their 20s and 30s are no longer uncommon.
Related conditions
Squamous Cell Carcinoma
Second most common skin cancer. More aggressive than BCC - can spread to lymph nodes if not treated early.
Actinic Keratosis
Rough, sandpaper-like patches from years of sun damage. The most common precancer - 5-10% progress to squamous cell carcinoma.
Melanoma
The most dangerous skin cancer - but 99% survival when caught early. Learn the ABCDE signs.