Cancer survivorship has many definitions. The most commonly used definition of cancer survivorship is the National Cancer Institute's definition stating that a person is considered a survivor from the day of cancer diagnosis through the end of life. Another definition is that a cancer survivor is a person who has completed treatment, but for many people this is imprecise because adjuvant hormonal treatment may continue for many years, for example, among breast and prostate cancer survivors, thus it is often difficult to say when treatment ends. Still other definitions are linked to treatment success, defining a survivor as one who is five or more year's postdiagnosis. Regardless of how survivorship is defined, the number of those living with cancer and who define themselves as survivors ...