When Kristen Oelschlager, RN, chief operating officer at Castle Biosciences, learned about her cancer diagnosis, she was shocked. What she thought was a simple spot on her left temple turned out to be melanoma, a type of skin cancer that can lead to death, according to the National Cancer Institute. Melanoma of the skin accounts for 5.6% of all new cancer cases in the U.S., and an estimated more than 106,000 cases are expected to be diagnosed in 2021. But for Oelschlager, melanoma was the last thought on her mind when a friend asked about the troublesome spot. Oelschlager says, “I thought [my friend] was being a little crazy. I agreed to go have it looked at, mainly to appease her.” Luckily, her friend was right to push for the examination.