Interpretations on the updates of American Joint Committee on cancer staging system (8th edition) for thyroid cancer
SUN Wei
HE Liang
ZHANG Hao
Abstract：American Joint Committee on Cancer (AJCC) thyroid cancer staging system, mainly consisting of the primary tumor (T), regional lymph node metastasis (N) and distant metastasis (M), is one of the most important prognostic staging systems worldwide to provide prognostic information and evaluate prognosis for thyroid cancer. In this article, we introduced the updates and interpretations of AJCC cancer staging system (8th edition) for thyroid cancer compared to the 7th edition, which consists of increasing the age at diagnosis cutoff value used for staging from 45 years to 55 years for differentiated thyroid cancer (DTC), changing the definition of T3 stage and the anaplastic thyroid cancer (ATC) T stage, changing the VII lymph node metastasis from N1b to N1a, revising the TNM staging of DTC and ATC. The new staging system not only plays an important role in the surgical treatments, but also is of great significance in evaluating the prognosis for thyroid cancer patients.
Keywords：thyroid cancerAmerican Joint Committee on Cancercancer staging system
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 255-258 )