1. Radiofrequency and Microwave Ablation Compared to Systemic Chemotherapy and to Partial Hepatectomy in the Treatment of Colorectal Liver Metastases: A Systematic Review and Meta-Analysis
- Author
-
Aukje A. J. M. van Tilborg, Martijn R. Meijerink, Jacqueline S. Frankema, Warner Prevoo, Juanita Heymans, Llenalia Garcia Fernandez, Dick J. Richel, Kirsten Holdt Henningsen, Koert P. de Jong, Joan Vlayen, Robbert S. Puijk, and Mattias Neyt
- Subjects
Ablation Techniques ,medicine.medical_specialty ,COAGULATION THERAPY ,Radiofrequency ablation ,medicine.medical_treatment ,HEPATIC RESECTION ,Catheter ablation ,Review ,THERMAL ABLATION ,Cochrane Library ,030218 nuclear medicine & medical imaging ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,LONG-TERM OUTCOMES ,Randomized controlled trial ,law ,medicine ,Hepatectomy ,Humans ,Radiology, Nuclear Medicine and imaging ,Partial hepatectomy (PH) ,Systemic chemotherapy ,Microwaves ,RECURRENCE ,CANCER METASTASES ,Colorectal liver metastases (CRLM) ,business.industry ,Liver Neoplasms ,Radiofrequency ablation (RFA) ,Microwave ablation ,Microwave ablation (MWA) ,Ablation ,PRACTICE PARAMETERS ,1ST-LINE TREATMENT ,Treatment Outcome ,030220 oncology & carcinogenesis ,Meta-analysis ,Catheter Ablation ,Female ,CLINICAL-PRACTICE GUIDELINES ,Radiology ,Colorectal Neoplasms ,FOLLOW-UP ,Cardiology and Cardiovascular Medicine ,business - Abstract
Purpose To assess safety and outcome of radiofrequency ablation (RFA) and microwave ablation (MWA) as compared to systemic chemotherapy and partial hepatectomy (PH) in the treatment of colorectal liver metastases (CRLM). Methods MEDLINE, Embase and the Cochrane Library were searched. Randomized trials and comparative observational studies with multivariate analysis and/or matching were included. Guidelines from National Guideline Clearinghouse and Guidelines International Network were assessed using the AGREE II instrument. Results The search revealed 3530 records; 328 were selected for full-text review; 48 were included: 8 systematic reviews, 2 randomized studies, 26 comparative observational studies, 2 guideline-articles and 10 case series; in addition 13 guidelines were evaluated. Literature to assess the effectiveness of ablation was limited. RFA + systemic chemotherapy was superior to chemotherapy alone. PH was superior to RFA alone but not to RFA + PH or to MWA. Compared to PH, RFA showed fewer complications, MWA did not. Outcomes were subject to residual confounding since ablation was only employed for unresectable disease. Conclusion The results from the EORTC-CLOCC trial, the comparable survival for ablation + PH versus PH alone, the potential to induce long-term disease control and the low complication rate argue in favour of ablation over chemotherapy alone. Further randomized comparisons of ablation to current-day chemotherapy alone should therefore be considered unethical. Hence, the highest achievable level of evidence for unresectable CRLM seems reached. The apparent selection bias from previous studies and the superior safety profile mandate the setup of randomized controlled trials comparing ablation to surgery. Electronic supplementary material The online version of this article (10.1007/s00270-018-1959-3) contains supplementary material, which is available to authorized users.
- Published
- 2018
- Full Text
- View/download PDF