National Comprehensive Cancer Network

About NCCN

NCCN Flash Updates™: NCCN Guidelines® Updated

NCCN has published updates to the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) for Occult Primary. These NCCN Guidelines® are currently available as Version 2.2016.

  • The Discussion section has been updated to reflect the changes in the algorithm.

*For your reference, the previous update (Version 1.2016) to the NCCN Guidelines for Occult Primary, published on December 18, 2015, is available at the following link:

For the complete updated versions of the NCCN Guidelines, NCCN Guidelines with NCCN Evidence Blocks™, the NCCN Drugs & Biologics Compendium (NCCN Compendium®), and the NCCN Chemotherapy Order Templates (NCCN Templates®), please visit

To access the NCCN Biomarkers Compendium™, please visit

To view the NCCN Guidelines for Patients®, please visit

Free NCCN Guidelines apps for iPhone, iPad, and Android tablets are now available! Visit

About NCCN Flash Updates™ 

NCCN Flash Updates™ is a subscription service from NCCN that provides timely notification of updated and new information appearing in the NCCN Guidelines, the NCCN Compendium®, and other NCCN Content. 

Subscribe to NCCN Flash Updates™ 

National Comprehensive Cancer Network® (NCCN®)

275 Commerce Drive, Suite 300

Fort Washington, PA 19034

Telephone: +1 215.690.0300 Fax: +1 215.690.0280 

Access information on permissions and licensing of NCCN Content