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Published in: Annals of Surgical Oncology 7/2020

01-07-2020 | Metastasis | Hepatobiliary Tumors

Laparoscopic Versus Open Thermal Ablation of Colorectal Liver Metastases: A Propensity Score-Based Analysis of Local Control of the Ablated Tumors

Authors: Mariano Cesare Giglio, MD, Bram Logghe, MBBS, Eleonora Garofalo, MD, Federico Tomassini, MD, Aude Vanlander, MD, Giammauro Berardi, MD, Roberto Montalti, MD, PhD, Roberto Ivan Troisi, MD, MSc, PhD

Published in: Annals of Surgical Oncology | Issue 7/2020

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Abstract

Background

Laparoscopic ablation (LA) of colorectal liver metastases (CRLMs) is frequently performed in combination with laparoscopic liver resection or as a stand-alone procedure. However, LA is technically demanding and whether the results are comparable with those of open ablation (OA) has not been determined to date. This study compared the effectiveness of LA and OA in achieving local tumor control of CRLMs.

Methods

Patients undergoing LA or OA of CRLMs at Ghent University Hospital between June 2007 and February 2018 were identified from a prospective database. Lesions treated by LA and OA were matched 1:1 using a propensity score based on lesions (liver segment, size, deepness, proximity to a vessel), patients, and procedural characteristics. Ablation sites were followed up with computed-tomography or magnetic resonance imaging to assess the completeness of the ablation and ablation-site recurrence (ASR). Analysis of ASR was performed with the Kaplan–Meier method and Cox regression.

Results

In this study, 163 patients underwent the surgical ablation (78 LA, 85 OA) of 333 CRLMs (143 LA, 190 OA). After matching, 220 lesions (110 LA, 110 OA) were analyzed. Ablation was complete in 93.7% (LA) and 97.3% (OA) of the sites (p = 0.195). No difference in ASR was observed (p = 0.351), with a cumulative risk of ASR at 12 months of 9.1% (LA) and 8.2% (OA). After multivariable analysis, ASR was confirmed to be independent of the surgical approach.

Conclusion

The findings showed that LA and OA achieve a comparable local control of CRLMs. This result further supports the adoption of a laparoscopic approach for the treatment of CRLMs.
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Literature
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go back to reference Ruers T, Punt C, Van coevorden F, et al. Radiofrequency ablation combined with systemic treatment versus systemic treatment alone in patients with non-resectable colorectal liver metastases: a randomized EORTC intergroup phase 2 study (EORTC 40004). Ann Oncol. 2012;23:2619–26. https://doi.org/10.1093/annonc/mds053. Ruers T, Punt C, Van coevorden F, et al. Radiofrequency ablation combined with systemic treatment versus systemic treatment alone in patients with non-resectable colorectal liver metastases: a randomized EORTC intergroup phase 2 study (EORTC 40004). Ann Oncol. 2012;23:2619–26. https://​doi.​org/​10.​1093/​annonc/​mds053.
25.
Metadata
Title
Laparoscopic Versus Open Thermal Ablation of Colorectal Liver Metastases: A Propensity Score-Based Analysis of Local Control of the Ablated Tumors
Authors
Mariano Cesare Giglio, MD
Bram Logghe, MBBS
Eleonora Garofalo, MD
Federico Tomassini, MD
Aude Vanlander, MD
Giammauro Berardi, MD
Roberto Montalti, MD, PhD
Roberto Ivan Troisi, MD, MSc, PhD
Publication date
01-07-2020
Publisher
Springer International Publishing
Published in
Annals of Surgical Oncology / Issue 7/2020
Print ISSN: 1068-9265
Electronic ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-020-08243-w

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