3D HDR intracavitary brachytherapy combined with complementary applicator-guided external beam radiotherapy for 338 patients with stage IIB-IIIB uterine cervical cancer: A single-center phase II prospective study with long-term follow-up.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. 5530-5530 ◽  
Author(s):  
Jin Yi Lang ◽  
Zixuan Fan ◽  
Peng Xu ◽  
Mei Feng ◽  
Weidong Wang
Keyword(s):  
Cervical Cancer ◽  
External Beam Radiotherapy ◽  
Locally Advanced ◽  
Uterine Cervical Cancer ◽  
Intracavitary Brachytherapy ◽  
External Beam ◽  
Advanced Cervical Cancer ◽  
Locally Advanced Cervical Cancer ◽  
Gynecology And Obstetrics

5530 Background: For uterine cervical cancer (UCC) patients with asymmetric parametric lesions, 3D HDR-intracavitary brachytherapy (HDR-ICBT) could not cover all the lesions, resulting in residual lesion and treatment failure. To settle this problem, a novel treatment modal of 3D HDR-ICBT combined with complementary applicator-guided external beam radiotherapy (EBRT) was used for UCC patients with stage IIB-IIIB in present study. Methods: Between June 2010 and June 2015, 338 patients with locally advanced cervical cancer (International Federation of Gynecology and Obstetrics stage IIB-IIIB) were treated with concurrent chemoradiotherapy. Imaged guided IMRT was used for external beam radiotherapy, 45Gy/25f. The chemotherapy was weekly cisplatin (40mg/m2). Four fractions of 3D HDR-ICBT combined with complementary applicator-guided external beam radiotherapy were used. The prescribed dose for HR-CTV and IR-CTV was 7Gy (D90) and 5Gy (D90). Dose constraints for organs at risk were D2cc <70 Gy for rectum, and D2cc<90 Gy for bladder in terms of equivalent total dose in 2 Gy fractions as GEC-ESTRO recommendations. Results: Median follow-up was 64 months (11–71 months). The D90 of GTV, HR-CTV, and IR-CTV in all cases were 93.4 (85.1-107.8) Gy, 86.4 (79.9-91.3) Gy and 72.3 (70.8-75.2) Gy, respectively. The D2CC of bladder, rectum and sigmoid were 74.3Gy、65.5Gy and 64.1Gy, respectively. 5-year LRC, DFS, and OS was 90.8%, 84.1% and 80.8%, respectively. Treatment was well tolerated. The grade ≥3 genitourinary and gastrointestinal acute and late toxicities were 2.1% and 5.2%, respectively. Conclusions: The combination of HDR-ICBT with an applicator-guided IMRT is feasible for uterine cervical cancer patients with asymmetric parametric lesions. Further study is needed to determine whether this treatment modal could be used to replace the invasive interstitial brachytherapy (ISBT) in the cases of locally advanced cervical cancer where HR-CTV coverage cannot be obtained with ICBT.

Individually customised parametrial boost for locally advanced cervical cancer: is 2D planned external beam radiotherapy useful?

2019 ◽  
Vol 19 (3) ◽  
pp. 248-253
Author(s):  
Aparna Gangopadhyay ◽  
Subrata Saha
Keyword(s):  
Cervical Cancer ◽  
External Beam Radiotherapy ◽  
Locally Advanced ◽  
Intracavitary Brachytherapy ◽  
External Beam ◽  
Advanced Cervical Cancer ◽  
Locally Advanced Cervical Cancer ◽  
Pelvic Wall ◽  
Significant Difference ◽  
Median Period

AbstractAim:Pelvic wall control and toxicity was retrospectively assessed in patients who received individually customised parametrial boost (PMB) for locally advanced cervical cancer with 2D planned external beam radiotherapy. Outcomes of a dose-escalated combined boost were also evaluated.Materials and methods:Toxicity and pelvic wall recurrence was evaluated over a median period of 24 months between two groups who received different pelvic wall doses. One group was randomised to receive either intracavitary brachytherapy (ICRT) with an external beam PMB using a customised midline shield, or a dose-escalated combined boost with interstitial brachytherapy (ISBT) and PMB. The comparator group received no PMB.Results:At 24 months, pelvic wall recurrence occurred in 2/112 and 40/130 with and without PMB, respectively (p < 0·000001). No significant difference in toxicity was noted between boost versus no-boost groups (p = 0·56). Combined ISBT/PMB dose escalation showed no significant difference in pelvic wall recurrence compared with PMB alone (p = 0·49).Findings:Individually customised 2D PMBs with 3D image-based ICRT was safe and improved pelvic wall control in locally advanced cervix cancer. Dose-escalated combined boosts offered no significant benefit over standard boost doses.

scholarly journals Computed Tomography–Guided Interstitial Brachytherapy for Locally Advanced Cervical Cancer: Introduction of the Technique and a Comparison of Dosimetry With Conventional Intracavitary Brachytherapy

2017 ◽  
Vol 27 (4) ◽  
pp. 768-775 ◽  
Author(s):  
Zhong-Shan Liu ◽  
Jie Guo ◽  
Yang-Zhi Zhao ◽  
Xia Lin ◽  
Bing-Ya Zhang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cervical Cancer ◽  
External Beam Radiotherapy ◽  
Locally Advanced ◽  
High Dose ◽  
External Beam ◽  
Advanced Cervical Cancer ◽  
3 Dimensional ◽  
Locally Advanced Cervical Cancer ◽  
The Mean

ObjectiveWe present a new technique of 3-dimensional computed tomography–guided interstitial (IS) brachytherapy (BT) for locally advanced cervical cancer, offering a more advantageous clinical treatment approach.Materials/MethodsInterstitial BT was performed using an applicator combining uterine tandem and metal needles; needles were inserted freehand under real-time 3-dimensional computed tomography guidance. Twenty-eight patients with bulky tumors and/or parametrial extension (tumor size > 5 cm) after external beam radiotherapy received IS BT. Dosimetric outcomes of the IS BT including the total dose (external beam radiotherapy and high dose-rate BT) D90 for the high-risk clinical target volume (HR-CTV) and D2cc for the organs at risk (OARs) were investigated and compared with a former patient group consisting of 30 individuals who received the conventional intracavitary (IC) BT.ResultsThe mean D90 values for HR-CTV in the IC BT and IS BT groups were 76.9 ± 5.7 and 88.1 ± 3.3 Gy, respectively. Moreover, 85.7% of the patients received D90 for HR-CTV of 87 Gy or greater in the IS BT group, and only 6.7% of the patients received D90 for HR-CTV of 87 Gy or greater in the IC BT group. The D2cc for the bladder, rectum, and sigmoid were 84.7 ± 6.8, 69.2 ± 4.2, and 67.8 ± 4.5 Gy in the IC BT group and 81.8 ± 6.5, 66.8 ± 4.0, and 64.8 ± 4.1 Gy in the IS BT group. The mean number of needles was 6.9 ± 1.4, with a mean depth of 2.9 ± 0.9 mm for each IS BT. Interstitial BT was associated with only minor complications.ConclusionsThe IS BT technique resulted in better dose-volume histogram parameters for large volume tumors (>5 cm) compared with the conventional IC BT and acceptable risk of acute complications in locally advanced cervical cancer and is clinically feasible.

scholarly journals Сombined radiotherapy for cervical cancer with the use of polyradiosensitization with cisplatin and gemcitabine - immediate trial results of Azerbaijan national center of oncology

2017 ◽  
Vol 98 (6) ◽  
pp. 884-889
Author(s):  
J A Aliyev ◽  
I H Isayev ◽  
K S Akbarov ◽  
E H Guliyev ◽  
N R Aliyeva ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Dose Rate ◽  
External Beam Radiotherapy ◽  
Locally Advanced ◽  
High Dose Rate ◽  
High Dose ◽  
External Beam ◽  
Advanced Cervical Cancer ◽  
Locally Advanced Cervical Cancer ◽  
Group 2

Aim. Study of immediate results of chemoradiotherapy of locally advanced cervical cancer with the use of polyradiosensitization with cisplatin and gemcitabine. Methods. The article analyzes diagnostic and treatment results of 128 patients with IIA-IIIB stage cervical cancer. The age of patients varied between 31 and 76 years. External beam radiotherapy was performed with 1.8 Gy fraction up to a total dose of 45 Gy, high dose rate brachytherapy consisted of four 7.0 Gy fractions. Patients from group 1 received weekly infusions of cisplatin (40 mg/m2) and from group 2 - polyradiosensitization with cisplatin (40 mg/m2) and gemcitabine (75 mg/m2). Results. Chemoradiotherapy with the use of polyradiosensitization compared to standard chemoradiotherapy allowed significant improving of immediate results of treatment of patients with locally advanced cervical cancer, which was particularly prominent in such unfavorable cases as cervical adenocarcinoma and IIIB stage of the disease. Early toxicity of the treatment was higher in group 2 but effectively resolved with symptomatic supportive treatment and did not lead to interruptions in radiotherapy. Conclusion. Combination of conformal external beam radiotherapy, high dose rate intracavitary brachytherapy and concurrent polychemotherapy with cisplatin and gemcitabine is feasible and reasonably safe; chemoradiotherapy with the use of polyradiosensitization improves immediate results of the treatment of cervical cancer with acceptable level of toxicity.

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