Treatment results of adjuvant pelvic radiotherapy after radical hysterectomy for lowrisk Stage IB1-IIA cervical cancer

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Abstract

Objective: The aim of the present retrospective analysis was to determine the effectiveness of pelvic radiotherapy (RT) as postoperative adjuvant therapy for low-risk cervical cancer. Methods: Between June 2003 and April 2011, the clinical data of 225 International Federation of Gynecology and Obstetrics (FIGO) Stage IB1-IIA cervical cancer patients with low-risk factors were retrospectively reviewed, to analyze the relationship between adjuvant pelvic RT after radical hysterectomy and tumor recurrence or the patients' survival. Results: The 5-year overall survival (OS) of 225 patients was 91.2% and 5-year disease-free survival (DFS) was 84.5%. The 5-year DFS and local regional disease-free survival was significantly better for patients in the RT group compared with that in the non-RT group (5-year DFS, 91.2% vs. 77.1%, P = 0.006; 5-year local regional disease-free survival 94.6% vs. 79.0%, P = 0.001). There were no statistically significant differences in the 5-year OS (92.9% vs. 89.4%, P = 0.371) and distant metastasis-free survival (96.4% vs. 96.5%, P = 0.887) between the two groups. Grade 3-4 treatment-related acute and late toxicities were not significantly different between the two groups. Subgroup analysis shows the 5-year DFS of RT alone, chemotherapy (CT) alone, non-RT/CT, RT and CT was, respectively, 90.5%, 62.9%, 81.4%, 92.5% separately (P = 0.002). The 5-year OS was not significantly different (91.6% vs. 78.2% vs. 92.9% vs. 96.9%, P = 0.887) between the four groups. Performing univariate analysis, postoperative CT was the only significant risk factor for DFS. Conclusions: Our results indicate that postoperative adjuvant pelvic RT has a tendency to improve DFS especially local regional disease-free survival for FIGO Stage IB1-IIA cervical cancer patients with low-risk factors, without increased Grade 3-4 treatment-related acute and late toxicities, but non-standard CT is harmful to the prognosis (DFS) of these patients.

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CITATION STYLE

APA

Zhao, D., Qiu, H., Zhang, H., Hong, L., Zhang, G., & Xie, C. (2017). Treatment results of adjuvant pelvic radiotherapy after radical hysterectomy for lowrisk Stage IB1-IIA cervical cancer. Japanese Journal of Clinical Oncology, 47(11), 1024–1030. https://doi.org/10.1093/jjco/hyx127

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