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Author Notes:

Correspondence: mark.mcdonald@emory.edu

MM acquired the data, oversaw the data analysis and drafted the manuscript.

YL performed the statistical analysis.

All authors contributed to the design of the study, data interpretation, and critical revision of the manuscript. All authors read and approved the final manuscript.

The authors declare that they have no competing interests.

Subjects:

Research Funding:

Research reported in this publication was supported in part by the biostatistics and bioinformatics of Winship Cancer Institute of Emory University and NIH/NCI under award number P30CA138292.

Keywords:

  • Science & Technology
  • Life Sciences & Biomedicine
  • Oncology
  • Radiology, Nuclear Medicine & Medical Imaging
  • Proton therapy
  • Intensity modulated radiation therapy
  • Acute toxicity
  • Head and neck cancer
  • CHEMO-IMRT
  • MULTI-INSTITUTION
  • ORAL MUCOSITIS
  • WEIGHT-LOSS
  • RADIOTHERAPY
  • CHEMOTHERAPY
  • BEAM
  • CARCINOMA
  • CHEMORADIATION
  • EXPERIENCE

Acute toxicity in comprehensive head and neck radiation for nasopharynx and paranasal sinus cancers: cohort comparison of 3D conformal proton therapy and intensity modulated radiation therapy

Tools:

Journal Title:

Radiation Oncology

Volume:

Volume 11, Number 1

Publisher:

, Pages 32-32

Type of Work:

Article | Final Publisher PDF

Abstract:

Background: To evaluate acute toxicity endpoints in a cohort of patients receiving head and neck radiation with proton therapy or intensity modulated radiation therapy (IMRT). Methods: Forty patients received comprehensive head and neck radiation including bilateral cervical nodal radiation, given with or without chemotherapy, for tumors of the nasopharynx, nasal cavity or paranasal sinuses, any T stage, N0-2. Fourteen received comprehensive treatment with proton therapy, and 26 were treated with IMRT, either comprehensively or matched to proton therapy delivered to the primary tumor site. Toxicity endpoints assessed included g-tube dependence at the completion of radiation and at 3 months after radiation, opioid pain medication requirement compared to pretreatment normalized as equivalent morphine dose (EMD) at completion of treatment, and at 1 and 3 months after radiation. Results: In a multivariable model including confounding variables of concurrent chemotherapy and involved nodal disease, comprehensive head and neck radiation therapy using proton therapy was associated with a lower opioid pain requirement at the completion of radiation and a lower rate of gastrostomy tube dependence by the completion of radiation therapy and at 3 months after radiation compared to IMRT. Proton therapy was associated with statistically significant lower mean doses to the oral cavity, esophagus, larynx, and parotid glands. In subgroup analysis of 32 patients receiving concurrent chemotherapy, there was a statistically significant correlation with a greater opioid pain medication requirement at the completion of radiation and both increasing mean dose to the oral cavity and to the esophagus. Conclusions: Proton therapy was associated with significantly reduced radiation dose to assessed non-target normal tissues and a reduced rate of gastrostomy tube dependence and opioid pain medication requirements. This warrants further evaluation in larger studies, ideally with patient-reported toxicity outcomes and quality of life endpoints.

Copyright information:

© 2016 McDonald et al. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

This is an Open Access work distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

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