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Comparative Study between Patients Treated with conventional radiotherapy and IMRT with Chemotherapy for Stage III - IVA Nasopharyngeal Carcinoma: A Single Institution Retrospective Report

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Journal of Cancer Therapy 2023年第12期14卷 451-464页

作者： Mamady Keita Juan Li Malick Bah Mamadou Aliou Diallo Alhassane Ismaël Touré Abou Camara Bangaly Traoré Abdoulaye Keita Wenbing Shen Department of radiotherapy The Fourth Affiliated Hospital of Hebei Medical University Shijiazhuang China Cancer Department of Donka National Hospital Conakry Guinea Faculty of Health Sciences and Techniques of Gamal Abdel Nasser University of Conakry Conakry Guinea Department of ENT-CFS Donka National Hospital Conakry Guinea

Introduction: Nasopharyngeal carcinomas are the most radiation-sensitive tumours, and radiotherapy alone provides better local control. Objectives: To evaluate the clinical efficacy and acute and late toxicities of two different treatment regimens for locally advanced nasopharyngeal carcinoma. Methods: From 2014 to 2017, 150 cases of stage III and 68 cases of stage IVA nasopharyngeal carcinoma were treated. Of these, 137 received conventional radiotherapy plus chemotherapy, and 81 received intensity-modulated radiotherapy plus chemotherapy. Chemotherapy was given either as induction, concurrent or adjuvant therapy. Survival rates were calculated according to Kaplan Meier and compared with the Log-rank test. The RTOG or EORTC criteria were used to assess acute and late toxicities. Results: The median follow-up time was 21.5 months, and the 2-year locoregional relapse-free survival, distant metastases-free survival, and overall survival rates in the conventional radiotherapy plus chemotherapy group were 76%, 71% and 77%, respectively;in the intensity-modulated radiotherapy plus chemotherapy group, they were 97%, 84%, and 100%, respectively. The difference in survival between the two groups was significant (χ2 = 5.06, P = 0.028). The incidence of grade 2 and 3 xerostomia one year after radiotherapy was 45.1% and 30.9% versus 33.3% and 0%. Conclusion: Compared with conventional radiotherapy plus chemotherapy, intensity-modulated radiotherapy plus chemotherapy offers better locoregional relapse-free survival and overall survival in patients with stage III and IVA nasopharyngeal carcinoma, and may significantly reduce the occurrence of radiation-induced xerostomia.

关键词： Nasopharyngeal Carcinoma conventional radiotherapy Intensity Modulated radiotherapy Chemotherapy Prognosis

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A review of the impact of FLASH radiotherapy on the central nervous system and glioma

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Radiation Medicine and Protection 2022年第4期3卷 208-212页

作者： Lin Li Yayi Yuan Yahui Zuo China Institute for Radiation Protection Taiyuan 030006China

Glioma has received considerable attention because of its potential of inducing high rates of morbidity,disability,and mortality.FLASH radiotherapy(FLASH-RT)has emerged as a popular topic in current research because of its ability to protect normal tissues.The present review summarized the current development of FLASH-RT in both the central nervous system and glioblastomas,explored the potential mechanisms underlying FLASH-RT-mediated protective effects on the central nervous system,and revealed the advantages of this new technique for glioma therapy.This study highlights the benefits and challenges of the present research and provides a reference for future research.

关键词： FLASH radiotherapy Glioma Nervous system conventional radiotherapy

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