Re-Irradiation with Intensity-Modulated Radiation Therapy for the Treatment of Recurrent Cervical Cancer in the Pelvis: An Analysis of Outcomes and Toxicity

被引：0
作者：
Kang, Hye Jin [1 ]
Kwak, Yoo-Kang [1 ]
Lee, So Jung [1 ]
Kim, Myungsoo [1 ]
机构：
[1] Catholic Univ Korea, Incheon St Marys Hosp, Coll Med, Dept Radiat Oncol, Seoul 06591, South Korea
来源：
MEDICINA-LITHUANIA | 2023年 / 59卷 / 06期
关键词：
cervical cancer; recurrence; salvage therapy; intensity-modulated radiation therapy; re-irradiation; DOSE-RATE BRACHYTHERAPY; INTERSTITIAL BRACHYTHERAPY; NECK-CANCER; CARCINOMA; CHEMORADIATION; HEAD;
D O I：
10.3390/medicina59061164
中图分类号：
R5 [内科学];
学科分类号：
1002 ; 100201 ;
摘要：
Background and Objectives: Treatment options for most patients with recurrent cervical cancer within the previously irradiated field are limited. This study aimed to investigate the feasibility and safety of re-irradiation using intensity-modulated radiation therapy (IMRT) for patients with cervical cancer who experienced intrapelvic recurrence. Materials and Methods: We retrospectively analyzed 22 patients with recurrent cervical cancer who were treated with re-irradiation for intrapelvic recurrence using IMRT between July 2006 and July 2020. The irradiation dose and volume were determined based on the range considered safe for the tumor size, location, and previous irradiation dose. Results: The median follow-up period was 15 months (range: 3-120) and the overall response rate was 63.6%. Of the symptomatic patients, 90% experienced symptom relief after treatment. The 1- and 2-year local progression-free survival (LPFS) rates were 36.8% and 30.7%, respectively, whereas the 1- and 2-year overall survival (OS) rates were 68.2% and 25.0%, respectively. Multivariate analysis revealed that the interval between irradiations and gross tumor volume (GTV) were significant prognostic factors for LPFS. The response to re-irradiation showed borderline statistical significance for LPFS. The GTV and response to re-irradiation were also independent prognostic factors for OS. Grade 3 late toxicities were observed in 4 (18.2%) of the 22 patients. Recto- or vesico-vaginal fistula occurred in four patients. The irradiation dose was associated with fistula formation with borderline significance. Conclusions: Re-irradiation using IMRT is a safe and effective treatment strategy for patients with recurrent cervical cancer who previously received RT. Interval between irradiations, tumor size, response to re-irradiation, and radiation dose were the main factors affecting efficacy and safety.
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页数：11
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