Treating cancer of any kind is both an art and a science. Yes, there are scientific principles and the doctors need to understand a great deal to be able to work within the protocols. Yet, at the end of the day, every person is different and the profile of each subtype often results in different behavior of the cancer cells. This is when the art part comes into play. A medical oncologist who spends their lives and careers treating cancer needs to have both tools in their toolkit.