BCCs are abnormal, uncontrolled growths or lesions that arise in the skin’s basal cells, which line the deepest layer of the epidermis (the outermost layer of the skin). BCCs often look like open sores, red patches, pink growths, shiny bumps, or scars and are usually caused by a combination of cumulative and intense, occasional sun exposure.
Melanomas are more likely to spread quickly, so the skin cancer staging process becomes a very useful tool when it comes time to plan for treatment:
- Non-melanoma skin cancers: Basal cell carcinomas rarely spread and may not be staged. The chance that squamous cell carcinomas will spread is slightly higher and may be staged using the American Joint Committee on Cancer (AJCC) TNM System.
- Melanoma: Melanomas are more aggressive and likely to spread. This type of skin cancer is usually staged by the AJCC TNM system or the Clark levels. Read more about the melanoma skin cancer stages.
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