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Survival and Prognostic Factors for Outcome after Radiotherapy for T2 Glottic Carcinoma
Martine Hendriksma1, Marc A P van Ruler2, Berit M Verbist3
1Department of Otorhinolaryngology, Head & Neck Surgery, Leiden University Medical Center, 2300 RC Leiden, The Netherlands. m.hendriksma@lumc.nl.
Background:
Local recurrence after radiotherapy for T2 glottic carcinoma remains an issue and identifying patients at risk for relapse is, therefore, important. This study aimed to assess the oncological outcomes and prognostic factors in a consecutive series of patients treated with radiotherapy for T2N0 glottic carcinoma.
Methods:
Patients with T2N0 glottic carcinoma treated with radiotherapy were included in this retrospective study. Five- and ten-year local control (LC), overall survival (OS), disease-specific survival (DSS), and laryngeal preservation (LP) rates were calculated with the Kaplan-Meier method. The impact of prognostic variables was evaluated with the log-rank test.
Results:
Ninety-four patients were included for analysis. LC, OS, DSS, and LP rates were 70.5, 63.7, 86.0, and 74.7%, respectively at five years and 65.8, 41.0, 75.6, and 72.4% at 10 years. In total, 46 scans were included in the analyses. Vertical involvement of the anterior commissure on imaging showed a significant impact on LC.
Conclusions:
In accordance with previously described surgical risk factors, we identified vertical involvement of the anterior commissure on imaging as a prognostic factor for radiation failure.
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