Electrolysis Practice Exam

Which form of skin cancer is primarily caused by UV exposure?

1. Basal cell carcinoma

2. Melanoma

3. Squamous cell carcinoma

4. All of the above

The correct answer is: All of the above

The correct response indicates that all the listed types of skin cancer—basal cell carcinoma, melanoma, and squamous cell carcinoma—are associated with UV exposure. This is because ultraviolet (UV) radiation from the sun or artificial sources like tanning beds can damage the DNA in skin cells. Over time, this damage can lead to mutations that contribute to the development of skin cancer. Basal cell carcinoma is the most common form of skin cancer and is usually linked with cumulative sun exposure over a lifetime. Melanoma, although less common, is a more aggressive form of skin cancer that can develop from existing moles or appear as new pigmented lesions. It is particularly associated with intense, intermittent sun exposure that leads to severe burns. Squamous cell carcinoma, like basal cell carcinoma, is also primarily caused by long-term UV exposure and is the second most common form of skin cancer, often occurring in areas of the skin that receive prolonged sun exposure. Recognizing that all these skin cancers can result from UV exposure underscores the importance of sun protection measures, such as using sunscreen, wearing protective clothing, and avoiding tanning beds, as these preventive strategies can help reduce the risk of developing any type of skin cancer.