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Critical updates in neuroendocrine tumors: Version 9 American Joint Committee on Cancer staging system for gastroenteropancreatic neuroendocrine tumors
Journal article   Open access   Peer reviewed

Critical updates in neuroendocrine tumors: Version 9 American Joint Committee on Cancer staging system for gastroenteropancreatic neuroendocrine tumors

Aman Chauhan, Kelley Chan, Thorvardur R. Halfdanarson, Andrew M. Bellizzi, Guido Rindi, Dermot O'Toole, Phillip S. Ge, Dhanpat Jain, Arvind Dasari, Daniel A. Anaya, …
CA: a cancer journal for clinicians, Vol.74(4), pp.359-367
04/29/2024
DOI: 10.3322/caac.21840
PMCID: PMC11938941
PMID: 38685134
url
https://doi.org/10.3322/caac.21840View
Published (Version of record) Open Access

Abstract

The American Joint Committee on Cancer (AJCC) staging system for all cancer sites, including gastroenteropancreatic neuroendocrine tumors (GEP-NETs), is meant to be dynamic, requiring periodic updates to optimize AJCC staging definitions. This entails the collaboration of experts charged with evaluating new evidence that supports changes to each staging system. GEP-NETs are the second most prevalent neoplasm of gastrointestinal origin after colorectal cancer. Since publication of the AJCC eighth edition, the World Health Organization has updated the classification and separates grade 3 GEP-NETs from poorly differentiated neuroendocrine carcinoma. In addition, because of major advancements in diagnostic and therapeutic technologies for GEP-NETs, AJCC version 9 advocates against the use of serum chromogranin A for the diagnosis and monitoring of GEP-NETs. Furthermore, AJCC version 9 recognizes the increasing role of endoscopy and endoscopic resection in the diagnosis and management of NETs, particularly in the stomach, duodenum, and colorectum. Finally, T1NXM0 has been added to stage I in these disease sites as well as in the appendix.
Oncology Life Sciences & Biomedicine Science & Technology

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