The adapted classification scheme for tumors of adolescents and young adults (AYA) is based on the classification scheme proposed by RD Barr and colleagues1. The SEER AYA site recode variable was updated from the original ICD-O-2 based classification scheme using ICD-O-3 definitions for cancer morphology and topography.
The SEER AYA site recode was developed to better define the major cancer sites that affect individuals between 15 and 39 years of age. It is intended to facilitate SEER's reporting of cancer incidence rates and trends. The variable was added to the SEER databases as a convenience for researchers.
|AYA Site Recode 2020 Revision
|AYA Site Recode/WHO 2008
|AYA Site Recode (Original Definition)
1 Barr RD, Holowaty EJ, Birch JM. Classification Scheme for tumors diagnosed in adolescents and young adults. Cancer 2006;106(7):1425-30.