Basal Cell Carcinoma vs Squamous Cell Carcinoma

How to tell the difference — key features compared side by side.

Feature
Basal Cell Carcinoma
Squamous Cell Carcinoma
Category
Malignant
Malignant
Key feature
The most common cancer in humans. Slow-growing, rarely spreads, but can cause serious tissue damage if untreated.
Second most common skin cancer. More aggressive than BCC - can spread to lymph nodes if not treated early.
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
Cumulative lifetime sun exposure (more important than acute burns for SCC); Fair skin (Fitzpatrick types I-III); History of actinic keratosis - the primary precursor lesion
Action needed
A pearly, shiny, or translucent bump - especially with tiny visible blood vessels
A firm, red nodule on sun-exposed skin that persists or grows

Basal Cell Carcinoma

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.

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Squamous Cell Carcinoma

Squamous cell carcinoma (SCC) of the skin develops in the flat squamous cells that form the outer layer of the epidermis. It is the second most common skin cancer after BCC, with over one million cases diagnosed annually in the US.

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Does yours look more like basal cell carcinoma?

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?

Still not sure?

Our full ABCDE checker evaluates 5 clinical criteria dermatologists use.

Full ABCDE check →