The American Joint Committee on Cancer (AJCC) made an important change to how it updates and releases Cancer Staging content. The AJCC shifted from a Cancer Staging Manual to a Cancer Staging System and moved away from Editions to Versions. Updated Version 9 disease sites go into effect on January 1 following their release.
The new AJCC Protocol Version 9 content is presented in a streamlined, easy-to-use format including synoptic staging report format, tables, explanatory notes, and illustrations. All disease sites in the 8th Edition Cancer Staging Manual remain current until replaced with Version 9.
Current Version 9 content includes the following disease sites with their effective dates.