Abstract
Objective To preliminarily evaluate the efficacy and safety of intensity-modulated radiotherapy (IMRT) in the treatment of inoperable stage ⅣA thymoma. Methods A retrospective analysis of 15 patients with inoperable stage ⅣA thymoma receiving IMRT from January 2010 to December 2017 was performed. Among them, 9 patients were male and 6 female, aged 31-83 years with a medianof 59 years. The dose of radiotherapy was 50Gy/60Gy/70Gy/15-20 fractions for PTV/CTV/GTV. The short-term efficacy, overall survival rate and adverse reactions were analyzed. Results The follow-up rate was 100%. The median follow-up time was 48 months. The short-term partial remission rate was 93%(14/15). The 1-, 3-and 5-year overall survival rates were 100%, 75% and 75%, respectively. One patient presented with grade 3 hematological reaction. Four patients died of tumors. Conclusion Preliminary findings demonstrate that IMRT is an efficacious and safe treatment of stageⅣA thymoma, which can be applied for patients with unresectable thymoma. Key words: Thymoma/intensity-modulated radiotherapy; Treatment outcome; Safety
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