Journal article
Ureteral stenosis after 3D MRI-based brachytherapy for cervical cancer – Have we identified all the risk factors?
Radiotherapy and oncology, v 155, pp 86-92
Feb 2021
PMID: 33065181
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
•Ureteral stenosis (US) is a rare complication of image-guided brachytherapy.•BT technique predicted for US, among patients without pre-existing hydronephrosis.•An EQD2 ≥ 77 Gy to 0.1 cm3 of ureter correlated with development of US.
Ureteral stenosis (US) is a known complication from image-guided brachytherapy (IGBT); however, no dosimetric parameter has been associated with ureteral toxicity. We aimed to report the rate of late grade ≥3 US after MRI-based IGBT, and to identify clinical factors and dosimetric parameters predictive for US.
A retrospective review was performed on all cervical cancer patients treated with MRI-based IGBT between 2007 and 2017. Late grade ≥3 US was recorded according to CTCAE 4.03. The minimum dose to the maximally irradiated 0.1 cm3 of ureter (D0.1cm3) was extracted from dose-volume histograms. Binary logistic regression was performed to identify predictors of late grade ≥3 US.
242 patients with a median follow-up of 35.8 months (IQR, 19.2–60.8) were identified. Late grade ≥3 US occurred in 18 patients, and the actuarial 3-year rate was 7.3% (95% CI 3.3–11.3). After excluding patients with pre-existing hydronephrosis, late grade ≥3 US occurred in 11 patients with an actuarial 3-year rate of 4.4% (95% CI 1.7–7.1). Ureters with D0.1cm3 ≥77 Gy had a 28.6% incidence of late grade ≥3 US compared to 7.5% in those with D0.1cm3 <77 Gy (OR 2.39; 95% CI 1.23–4.65; p = 0.01). The incidence of late grade ≥3 US was 33.3%, and 40.0% for ureters receiving ≥85 and ≥90 Gy, to D0.1cm3, respectively.
After MRI-based IGBT, there is an estimated 4.4% risk of developing late grade ≥3 US among patients without pre-existing hydronephrosis. Ureteral dose ≥77 Gy to D0.1cm3 correlates with development of late grade ≥3 US.
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Details
- Title
- Ureteral stenosis after 3D MRI-based brachytherapy for cervical cancer – Have we identified all the risk factors?
- Creators
- Joshua L. Rodríguez-López - University of Pittsburgh School of MedicineDiane C. Ling - UPMC Hillman Cancer CenterAndrew Keller - UPMC Hillman Cancer CenterHayeon Kim - UPMC Hillman Cancer CenterAdrianna E. Mojica-Márquez - Universidad Central del Caribe School of Medicine, Bayamón, PR, United StatesScott M. Glaser - City Of Hope National Medical CenterSushil Beriwal - UPMC Hillman Cancer Center
- Publication Details
- Radiotherapy and oncology, v 155, pp 86-92
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Radiation Oncology (and Nuclear Medicine)
- Web of Science ID
- WOS:000628819400026
- Scopus ID
- 2-s2.0-85096188369
- Other Identifier
- 991021897363404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Oncology
- Radiology, Nuclear Medicine & Medical Imaging