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Basal cell carcinoma is the most common type of skin cancer, originating from the basal cells in the epidermis. It is most prevalent in individuals of European descent and typically appears on sun-exposed skin. While basal cell carcinomas rarely metastasize, they can be locally invasive and are sometimes referred to as rodent ulcers.12

Risk factors include excessive exposure to ultraviolet radiation from the sun, but also exposure to substances like arsenic and tar, and certain genetic conditions. Symptoms often present as an unusual growth or mole that changes in appearance or fails to heal. Early detection and treatment, usually through minor surgery, lead to a near 100 percent five-year survival rate. Prevention focuses on minimizing sun exposure and using protective measures.12

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