Maria had been a "sun-worshiper" from her early teens into her 40s. She never used sun protection and, in fact, used
sun tanning oils to enhance the UV radiation. Now in her 60s, Maria has noticed two firm, red skin lesions with a crusty
appearance on her face and neck.
1. Why is this patient at risk for squamous cell carcinoma? What characteristics does she exhibit?
2. What distinguishes squamous cell carcinoma from malignant melanoma?
3. Why does squamous cell carcinoma have a better prognosis than malignant melanoma?