Abstract:
BACKGROUND:To analyse the survival and late toxicities of elderly nasopharyngeal carcinoma (NPC) patients treated by intensity-modulated radiotherapy (IMRT) with the high-total- and fractionated-dose simultaneous modulated accelerated radiation therapy (SMART) boost technique and to identify the effect of concurrent chemotherapy for these patients. METHODS:Two hundred and fifty-four elderly patients (age ≥ 60.0) with newly diagnosed non-metastatic NPC were retrospectively analysed. Statistical analyses were performed using the SPSS software program. RESULTS:The actual mean total and fractionated doses delivered to the gross tumour volume of the nasopharynx (GTVnx) were 74.55 Gy and 2.49 Gy, respectively. The 5-year locoregional recurrence-free survival (LRRFS), distant metastasis-free survival (DMFS), disease-specific survival (DSS) and overall survival (OS) of the whole cohort were 93.0%, 85.7%, 83.2% and 74.1%, respectively. No grade 4 acute or late radiotherapy-induced toxicities were observed. Of 247 patients with stage II-IVb disease, 89 patients received radiotherapy (RT) alone, and 158 patients received concurrent chemoradiotherapy (CCRT), and the 5-year LRRFS, DMFS, DSS and OS of the RT-alone group vs. the CCRT group were 94.0% vs. 92.2%, 83.5% vs. 86.2%, 81.8% vs. 83.1% and 74.0% vs. 72.8% (all P > 0.05), respectively. Multivariate analyses showed that CCRT was not an independent predictor for LRRFS, DMFS, DSS and OS (all P > 0.05). CONCLUSION:High-total- and fractionated-dose SMART boost IMRT could obtain a satisfactory long-term outcome with mild late toxicity in elderly NPC patients. The role of CCRT needs to be further studied to optimize the treatment strategy and improve the overall survival.
journal_name
Oral Oncoljournal_title
Oral oncologyauthors
Miao J,Wang L,Zhu M,Xiao W,Wu H,Di M,Huang Y,Huang S,Han F,Deng X,Guo X,Zhao Cdoi
10.1016/j.oraloncology.2019.01.005subject
Has Abstractpub_date
2019-03-01 00:00:00pages
126-133eissn
1368-8375issn
1879-0593pii
S1368-8375(19)30006-5journal_volume
90pub_type
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