Common Types of Cancer Affecting AYAs. Adapted from1 A Snapshot of Adolescent and Young Adult Cancers: National Cancer Institute. [cited 2015 Nov 28]; NCI Surveillance, Epidemiology, and End Results (SEER) Program. Data is from SEER 18, 2007-2011, ages 15-39. Available from: www.cancer.gov/research/progress/snapshots/adolescent-young-adult.