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Distant metastases after definitive radiotherapy for squamous cell carcinoma of the head and neck

✍ Scribed by Majid O. F. Al-Othman; Christopher G. Morris; Russell W. Hinerman; Robert J. Amdur; William M. Mendenhall


Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
76 KB
Volume
25
Category
Article
ISSN
1043-3074

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✦ Synopsis


Purpose:

To analyze parameters that influence the risk of distant metastases after definitive radiotherapy.

Methods:

Between 1983 and 1997, 873 patients were treated with definitive radiotherapy and had follow-up for 2 years or more. univariate and multivariate analyses were performed to evaluate risk factors that might influence the risk of distant metastases.

Results:

The 5-year distant metastasis-free survival rate was 86%. univariate analyses revealed that the risk of distant metastases was significantly influenced by gender (p =.0092), primary site (p =.0023), t stage (p <.0001), n stage (p <.0001), overall stage (p <.0001), level of nodal metastases in the neck (p <.0001), histologic differentiation (p =.0096), control above the clavicles (p <.0001), and time to locoregional recurrence (p <.0001). multivariate analysis of freedom from distant metastases revealed that gender (p =.0390), t stage (p <.0001), n stage (p =.0060), nodal level (p <.0001), and locoregional control (p <.0001) significantly influenced this end point. multivariate analysis revealed that gender (p =.0049), t stage (p <.0001), n stage (p <.0001), and locoregional control (p <.0001) significantly influenced cause-specific survival.

Conclusions:

The risk of distant metastases after definitive radiotherapy is 14% at 5 years and is significantly influenced by gender, t stage, n stage, nodal level, and locoregional control.


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