Publication date: Available online 10 July 2018
Source: Journal of the American Academy of Dermatology
Author(s): J. Cañueto, J. Burguillo, D. Moyano-Bueno, A. Viñolas-Cuadros, A. Conde-Ferreirós, Luis Antonio Corchete-Sánchez, J. Pérez-Losada, C. Román-Curto
Abstract
Background
The new 8th edition of the American Joint Committee on Cancer (AJCC) staging system incorporates changes regarding cutaneous squamous cell carcinoma (CSCC).
Objectives
We aimed to compare the 8th edition of the AJCC (AJCC-8) staging system with the previous 7th edition (AJCC-7) and the Brigham and Women's Hospital alternative staging system, to identify their usefulness and the utility of their risk factors in defining prognostic groups in CSCC.
Methods
A series of 186 CSCCs of the head and neck was retrospectively collected. All three staging systems were compared in their ability to predict poor prognosis. Binary logistic regression models were built to determine which risk factors were most relevant.
Results
Poor prognosis was mainly associated with T2-AJCC-7, with T2b/T3-BWH's and with T3-AJCC-8. The AJCC-8 and the BWH's staging systems displayed overlap between each other in predicting poor prognosis and both were superior to the AJCC-7. The new risk factors incorporated into the AJCC-8 and the poor degree of differentiation were independently associated with poor outcome.
Limitations
Retrospective study and few cases with bone invasion.
Conclusions
The AJCC-8 is more distinctive, monotonous and homogeneous than the AJCC-7 and shows some overlap in the stratification of tumors with the BWH's system.
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