Published in:
01-12-2020 | Metastasis | Brief Research Article
Stereotactic body radiation therapy for liver metastasis from colorectal cancer: size matters
Authors:
S. Flamarique, M. Campo, G. Asín, S. Pellejero, A. Viúdez, F. Arias
Published in:
Clinical and Translational Oncology
|
Issue 12/2020
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Abstract
Purpose
We analysed our initial experience with SBRT in liver metastasis from colorectal cancer at our institution.
Materials and methods
Between January/2014 and December/2017, 22 patients with 31 LMCCR were treated. Local control (LC) was assessed using the Kaplan–Meier and log-rank tests. We analysed potential prognostic factors for LC: sex, PTV size, number of LM and the radiation scheme.
Results
Median age: 69 years. Prior chemotherapy or local liver treatments: 81.8% and 63.6% of patients, respectively. SBRT consisted of 3 × 20 Gy (42.9%) and 3 × 15 Gy (31.4%). There were 88.5% responses (57.1% CR and 31.4% PR). Median follow-up was 30 months. LC per lesion at 12 and 24 months was 85.3% and 61.8%, respectively. Tumour volumes > 30 cc correlated with worsened 2-year-control rates (90% vs 34.5%) (p = 0.005). There was only a patient with CTC-grade 3 toxicity.
Conclusions
Liver SBRT is a safe and effective treatment that achieves high local control rates. We found a significant correlation between larger LMCRC and worse local control.