Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapy

Abstract Background To evaluate the incidence of neck muscle spasm in nasopharyngeal carcinoma (NPC) patients that received intensity-modulated radiotherapy (IMRT), and to analyse the patient- and treatment-related risk factors associated with neck muscle spasm. Methods A sample of 152 IMRT-treated,...

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Main Authors: Lu-Lu Zhang, Guan-Qun Zhou, Zhen-Yu Qi, Xiao-Jun He, Jia-Xiang Li, Ling-Long Tang, Yan-Ping Mao, Ai-Hua Lin, Jun Ma, Ying Sun
Format: Article
Language:English
Published: BMC 2017-11-01
Series:BMC Cancer
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12885-017-3780-9
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author Lu-Lu Zhang
Guan-Qun Zhou
Zhen-Yu Qi
Xiao-Jun He
Jia-Xiang Li
Ling-Long Tang
Yan-Ping Mao
Ai-Hua Lin
Jun Ma
Ying Sun
author_facet Lu-Lu Zhang
Guan-Qun Zhou
Zhen-Yu Qi
Xiao-Jun He
Jia-Xiang Li
Ling-Long Tang
Yan-Ping Mao
Ai-Hua Lin
Jun Ma
Ying Sun
author_sort Lu-Lu Zhang
collection DOAJ
description Abstract Background To evaluate the incidence of neck muscle spasm in nasopharyngeal carcinoma (NPC) patients that received intensity-modulated radiotherapy (IMRT), and to analyse the patient- and treatment-related risk factors associated with neck muscle spasm. Methods A sample of 152 IMRT-treated, biopsy-proven, nondisseminated NPC patients were retrospectively analysed. All had documented IMRT treatment plans and had returned for follow-up review at 4 years post-radiotherapy. Spasm of the sternocleidomastoid (SCM) muscle was graded from 0 to 3 (absent to severe) and this grade served as the clinical endpoint. Risk factors were identified using logistic regression analysis. Results Within 4 years of radiotherapy, neck muscle spasm developed in 23.68% of the patients; Grades 0, 1, 2 and 3 were respectively assigned to 83.55, 7.57, 6.58 and 2.30% of assessed SCMs. Multivariate analysis indicated that gender, N stage, V60 (percentage of SCM volume that received >60 Gy) were independent prognostic variables, and that the optimal threshold for using V60 to predict neck muscle spasm was 61.92% (sensitivity = 0.900, specificity = 0.953). Conclusions Gender, N stage and V60 were independent predictive factors for post-radiotherapy neck muscle spasm, and a V60 of ≤61.92% in the SCM was relatively safe.
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spelling doaj.art-2b503c4ecb774fe5927b05470892dd7b2022-12-21T19:02:19ZengBMCBMC Cancer1471-24072017-11-011711910.1186/s12885-017-3780-9Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapyLu-Lu Zhang0Guan-Qun Zhou1Zhen-Yu Qi2Xiao-Jun He3Jia-Xiang Li4Ling-Long Tang5Yan-Ping Mao6Ai-Hua Lin7Jun Ma8Ying Sun9Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer MedicineDepartment of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer MedicineDepartment of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer MedicineDepartment of Clinical Medicine, School of Public Health, Sun Yat-sen UniversityDepartment of Oncology, First People’s Hospital of Zhaoqing CityDepartment of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer MedicineDepartment of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer MedicineDepartment of Oncology, First People’s Hospital of Zhaoqing CityDepartment of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer MedicineDepartment of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer MedicineAbstract Background To evaluate the incidence of neck muscle spasm in nasopharyngeal carcinoma (NPC) patients that received intensity-modulated radiotherapy (IMRT), and to analyse the patient- and treatment-related risk factors associated with neck muscle spasm. Methods A sample of 152 IMRT-treated, biopsy-proven, nondisseminated NPC patients were retrospectively analysed. All had documented IMRT treatment plans and had returned for follow-up review at 4 years post-radiotherapy. Spasm of the sternocleidomastoid (SCM) muscle was graded from 0 to 3 (absent to severe) and this grade served as the clinical endpoint. Risk factors were identified using logistic regression analysis. Results Within 4 years of radiotherapy, neck muscle spasm developed in 23.68% of the patients; Grades 0, 1, 2 and 3 were respectively assigned to 83.55, 7.57, 6.58 and 2.30% of assessed SCMs. Multivariate analysis indicated that gender, N stage, V60 (percentage of SCM volume that received >60 Gy) were independent prognostic variables, and that the optimal threshold for using V60 to predict neck muscle spasm was 61.92% (sensitivity = 0.900, specificity = 0.953). Conclusions Gender, N stage and V60 were independent predictive factors for post-radiotherapy neck muscle spasm, and a V60 of ≤61.92% in the SCM was relatively safe.http://link.springer.com/article/10.1186/s12885-017-3780-9Nasopharyngeal carcinomaNeck muscle spasmIntensity-modulated radiotherapyDose tolerance
spellingShingle Lu-Lu Zhang
Guan-Qun Zhou
Zhen-Yu Qi
Xiao-Jun He
Jia-Xiang Li
Ling-Long Tang
Yan-Ping Mao
Ai-Hua Lin
Jun Ma
Ying Sun
Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapy
BMC Cancer
Nasopharyngeal carcinoma
Neck muscle spasm
Intensity-modulated radiotherapy
Dose tolerance
title Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapy
title_full Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapy
title_fullStr Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapy
title_full_unstemmed Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapy
title_short Patient- and treatment-related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity-modulated radiotherapy
title_sort patient and treatment related risk factors associated with neck muscle spasm in nasopharyngeal carcinoma patients after intensity modulated radiotherapy
topic Nasopharyngeal carcinoma
Neck muscle spasm
Intensity-modulated radiotherapy
Dose tolerance
url http://link.springer.com/article/10.1186/s12885-017-3780-9
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