Basal-cell carcinoma
In the United States approximately 3 out of 10 caucasians develop a basal-cell carcinoma during their lifetime. This tumor accounts for approximately 70% of non-melanoma skin cancers. In 80 percent of all cases, basal-cell carcinoma affects the skin of head and neck. Furthermore, there appears to be an increase in the incidence of basal-cell cancer of the trunk in recent years.
BRCA mutation
Men with a "BRCA" mutation have a dramatically elevated relative risk of developing breast cancer, but because the overall incidence of breast cancer in men is so low, the absolute risk is equal to or lower than the risk for women without a "BRCA" mutation. Approximately 1% to 2% of men with a "BRCA1" mutation will develop breast cancer by age 70. Approximately 6% of men with a "BRCA2" mutation will develop breast cancer by age 70, which is approximately equal to the risk for women without a "BRCA" mutation. Very few men, with or without a predisposing mutation, develop breast cancer before age 50.