Basal cell carcinoma (BCC) differs from SCC because it affects basal cells only. Basal cells produce new skin cells as old cells die. However, both basal cell and squamous cell carcinoma are caused primarily by long-term exposure to sunlight and tanning beds. Basal cell carcinoma spots tend to look like open sores or patches of eczema or psoriasis. Treatment for BCC involves the same techniques used to treat SCC: excision, Mohs surgery, and topical chemotherapy.

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