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Radiation-induced Secondary Malignancies for Nasopharyngeal Carcinoma: a Pilot Study of Patients Treated Via IMRT or VMAT

Overview
Publisher Dove Medical Press
Specialty Oncology
Date 2018 Feb 7
PMID 29403311
Citations 14
Authors
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Abstract

Background: Patients treated with radiotherapy are at risk of developing a second cancer during their lifetime, which can directly impact treatment decision-making and patient management. The aim of this study was to qualify and compare the secondary cancer risk (SCR) after intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) in nasopharyngeal carcinoma (NPC) patients.

Patients And Methods: We analyzed the treatment plans of a cohort of 10 NPC patients originally treated with IMRT or VMAT. Dose distributions in these plans were used to calculate the organ equivalent dose (OED) with Schneider's full model. Analyses were applied to the brain stem, spinal cord, oral cavity, pharynx, parotid glands, lung, mandible, healthy tissue, and planning target volume.

Results: We observed that the OED-based risks of SCR were slightly higher for the oral cavity and mandible when VMAT was used. No significant difference was found in terms of the doses to other organs, including the brain stem, parotids, pharynx, submandibular gland, lung, spinal cord, and healthy tissue. In the NPC cohort, the lungs were the organs that were most sensitive to radiation-induced cancer.

Conclusion: VMAT afforded superior results in terms of organ-at-risk-sparing compared with IMRT. Most OED-based second cancer risks for various organs were similar when VMAT and IMRT were employed, but the risks for the oral cavity and mandible were slightly higher when VMAT was used.

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References
1.
Harbron R, Feltbower R, Glaser A, Lilley J, Pearce M . Secondary malignant neoplasms following radiotherapy for primary cancer in children and young adults. Pediatr Hematol Oncol. 2013; 31(3):259-67. DOI: 10.3109/08880018.2013.838723. View

2.
Kellerer A, Nekolla E, Walsh L . On the conversion of solid cancer excess relative risk into lifetime attributable risk. Radiat Environ Biophys. 2002; 40(4):249-57. DOI: 10.1007/s004110100106. View

3.
Taylor C, Correa C, Duane F, Aznar M, Anderson S, Bergh J . Estimating the Risks of Breast Cancer Radiotherapy: Evidence From Modern Radiation Doses to the Lungs and Heart and From Previous Randomized Trials. J Clin Oncol. 2017; 35(15):1641-1649. PMC: 5548226. DOI: 10.1200/JCO.2016.72.0722. View

4.
Zhu W, Hu F, Zhao T, Wang C, Tao Q . Clinical Characteristics of Radiation-Induced Sarcoma of the Head and Neck: Review of 15 Cases and 323 Cases in the Literature. J Oral Maxillofac Surg. 2015; 74(2):283-91. DOI: 10.1016/j.joms.2015.07.013. View

5.
Berrington de Gonzalez A, Gilbert E, Curtis R, Inskip P, Kleinerman R, Morton L . Second solid cancers after radiation therapy: a systematic review of the epidemiologic studies of the radiation dose-response relationship. Int J Radiat Oncol Biol Phys. 2012; 86(2):224-33. PMC: 3816386. DOI: 10.1016/j.ijrobp.2012.09.001. View