Basal-cell carcinoma
Basal-cell cancer is a very common skin cancer. It is much more common in fair-skinned individuals with a family history of basal-cell cancer and increases in incidence closer to the equator or at higher altitude. There are approximately 800,000 new cases yearly in the United States alone. Up to 30% of Caucasians develop basal-cell carcinomas in their lifetime. In Canada, the most common skin cancer is basal-cell carcinoma (as much as one third of all cancer diagnoses), affecting 1 in 7 individuals over a lifetime.
Epidemiology of breast cancer
The lifetime risk for breast cancer in the United States is usually given as about 1 in 8 (12%) of women by age 95, with a 1 in 35 (3%) chance of dying from breast cancer. This calculation assumes that all women live to at least age 95, except for those who die from breast cancer before age 95. Recent work, using real-world numbers, indicate that the actual risk is probably less than half the theoretical risk.