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Wang JC, Jiang BB, Zhang ZY, Liu YH, Shao LJ, Wang S, Yang W, Wu W, Yan K. Predictive nomograms of repeat intrahepatic recurrence and overall survival after radiofrequency ablation of recurrent colorectal liver metastases. Int J Hyperthermia 2024; 41:2323152. [PMID: 38465646 DOI: 10.1080/02656736.2024.2323152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 02/21/2024] [Indexed: 03/12/2024] Open
Abstract
OBJECTIVES This study was conducted to develop nomograms for predicting repeat intrahepatic recurrence (rIHR) and overall survival (OS), after radiofrequency ablation (RFA), treatment in patients with recurrent colorectal liver metastases (CLMs) after hepatectomy based on clinicopathologic features. METHODS A total of 160 consecutive patients with recurrent CLMs after hepatectomy who were treated with ultrasound-guided percutaneous RFA from 2012 to 2022 were retrospectively included. Patients were randomly divided into a training cohort and a validation cohort, with a ratio of 8:2. Potential prognostic factors associated with rIHR and OS, after RFA, were identified by using the competing-risks and Cox proportional hazard models, respectively, and were used to construct the nomogram. The nomogram was evaluated by Harrell's C-index and a calibration curve. RESULTS The 1-, 2-, and 3-year rIHR rates after RFA were 58.8%, 70.2%, and 74.2%, respectively. The 1-, 3- and 5-year OS rates were 96.3%, 60.4%, and 38.5%, respectively. In the multivariate analysis, mutant RAS, interval from hepatectomy to intrahepatic recurrence ≤ 12 months, CEA level >5 ng/ml, and ablation margin <5 mm were the independent predictive factors for rIHR. Mutant RAS, largest CLM at hepatectomy >3 cm, CEA level >5 ng/ml, and extrahepatic disease were independent predictors of poor OS. Two nomograms for rIHR and OS were constructed using the respective significant variables. In both cohorts, the nomogram demonstrated good discrimination and calibration. CONCLUSIONS The established nomograms can predict individual risk of rIHR and OS after RFA for recurrent CLMs and contribute to improving individualized management.
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Affiliation(s)
- Ji-Chen Wang
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Bin-Bin Jiang
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Zhong-Yi Zhang
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Yu-Hui Liu
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Li-Jin Shao
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Song Wang
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Wei Yang
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Wei Wu
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Kun Yan
- Department of Ultrasound, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
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Dijkstra M, Kuiper BI, Schulz HH, van der Lei S, Puijk RS, Vos DJW, Timmer FEF, Scheffer HJ, Buffart TE, van den Tol MP, Lissenberg-Witte BI, Swijnenburg RJ, Versteeg KS, Meijerink MR. Recurrent Colorectal Liver Metastases: Upfront Local Treatment versus Neoadjuvant Systemic Therapy Followed by Local Treatment (COLLISION RELAPSE): Study Protocol of a Phase III Prospective Randomized Controlled Trial. Cardiovasc Intervent Radiol 2024; 47:253-262. [PMID: 37943351 PMCID: PMC10844349 DOI: 10.1007/s00270-023-03602-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 10/17/2023] [Indexed: 11/10/2023]
Abstract
PURPOSE The objective of the COLLISION RELAPSE trial is to prove or disprove superiority of neoadjuvant systemic therapy followed by repeat local treatment (either thermal ablation and/or surgical resection), compared to repeat local treatment alone, in patients with at least one recurrent locally treatable CRLM within one year and no extrahepatic disease. METHODS A total of 360 patients will be included in this phase III, multicentre randomized controlled trial. The primary endpoint is overall survival. Secondary endpoints are distant progression-free survival, local tumour progression-free survival analysed per patient and per tumour, systemic therapy-related toxicity, procedural morbidity and mortality, length of hospital stay, pain assessment and quality of life, cost-effectiveness ratio and quality-adjusted life years. DISCUSSION If the addition of neoadjuvant systemic therapy to repeat local treatment of CRLM proves to be superior compared to repeat local treatment alone, this may lead to a prolonged life expectancy and increased disease-free survival at the cost of possible systemic therapy-related side effects. LEVEL OF EVIDENCE Level 1, phase III randomized controlled trial. TRIAL REGISTRATION NCT05861505. May 17, 2023.
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Affiliation(s)
- Madelon Dijkstra
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
| | - Babette I Kuiper
- Department of Surgery, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Hannah H Schulz
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Susan van der Lei
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Robbert S Puijk
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Danielle J W Vos
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Florentine E F Timmer
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Hester J Scheffer
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Noordwest Ziekenhuisgroep, Alkmaar, the Netherlands
| | - Tineke E Buffart
- Department of Medical Oncology, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | | | - Birgit I Lissenberg-Witte
- Department of Epidemiology and Data Science, Amsterdam University Medical Centers, Location VUmc, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Rutger-Jan Swijnenburg
- Department of Surgery, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Kathelijn S Versteeg
- Department of Medical Oncology, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Martijn R Meijerink
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Location VUmc, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
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3
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Endo Y, Rueda BO, Woldesenbet S, Munir MM, Lima HA, Katayama ES, Shaikh CF, Guglielmi A, Ruzzenente A, Aldrighetti L, Alexandrescu S, Kitago M, Poultsides G, Sasaki K, Aucejo F, Pawlik TM. The impact of recurrence timing and tumor burden score on overall survival among patients undergoing repeat hepatectomy for colorectal liver metastases. J Surg Oncol 2023; 128:560-568. [PMID: 37195231 DOI: 10.1002/jso.27314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 04/29/2023] [Indexed: 05/18/2023]
Abstract
INTRODUCTION Approximately 15% of patients experience a resectable intrahepatic recurrence after an index curative-intent hepatectomy for colorectal liver metastases (CRLM). We sought to investigate the impact of recurrence timing and tumor burden score (TBS) at the time of recurrence on overall survival among patients undergoing repeat hepatectomy. METHODS Patients with CRLM who experienced recurrent intrahepatic disease after initial hepatectomy between 2000 and 2020 were identified from an international multi-institutional database. The impact of time-TBS, defined as TBS divided by the time interval of recurrence, was assessed relative to overall survival. RESULTS Among 220 patients, the median age was 60.9 years (interquartile range [IQR]: 53.0-69.0), and 144 (65.5%) patients were male. Most patients experienced multiple recurrences (n = 120, 54.5%) within 12 months after the initial hepatectomy (n = 139, 63.2%). The median tumor size of the recurrent CRLM was 2.2 cm (IQR: 1.5-3.0 cm) with a median TBS of 3.5 (2.3-4.9) at the time of recurrence. Overall, 121 (55.0%) patients underwent repeat hepatectomy, whereas 99 (45.0%) individuals were treated with systemic chemotherapy or other nonsurgical treatments; repeat hepatectomy was associated with better postrecurrence survival (PRS) (p < 0.001). Three-year PRS incrementally worsened (low time-TBS: 71.7%, 95% confidence interval [CI], 57.9-88.8 vs. medium: 63.6%, 95% CI, 47.7-84.8 vs. high: 49.2%, 95% CI, 31.1-77.7, p = 0.02) as time-TBS values increased. Each unit increase in time-TBS score was independently associated with a 41% higher possibility of death (hazard ratio: 1.41; 95% CI, 1.04-1.90, p = 0.03). CONCLUSIONS Time-TBS was associated with long-term outcomes after repeat hepatectomy for recurrent CRLM. Time-TBS may be an easy tool to help select patients who may benefit the most from repeat hepatic resection of recurrent CRLM.
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Affiliation(s)
- Yutaka Endo
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Belisario Ortiz Rueda
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Selamawit Woldesenbet
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Muhammad Musaab Munir
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Henrique A Lima
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Erryk S Katayama
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
| | - Chanza F Shaikh
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
| | | | | | | | | | - Minoru Kitago
- Department of Surgery, Keio University, Tokyo, Japan
| | - George Poultsides
- Department of Surgery, Stanford University, Stanford, California, USA
| | - Kazunari Sasaki
- Department of Surgery, Stanford University, Stanford, California, USA
| | - Federico Aucejo
- Department of General Surgery, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Timothy M Pawlik
- Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, Ohio, USA
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Dijkstra M, van der Lei S, Puijk RS, Schulz HH, Vos DJW, Timmer FEF, Scheffer HJ, Buffart TE, van den Tol MP, Lissenberg-Witte BI, Swijnenburg RJ, Versteeg KS, Meijerink MR. Efficacy of Thermal Ablation for Small-Size (0-3 cm) versus Intermediate-Size (3-5 cm) Colorectal Liver Metastases: Results from the Amsterdam Colorectal Liver Met Registry (AmCORE). Cancers (Basel) 2023; 15:4346. [PMID: 37686622 PMCID: PMC10487073 DOI: 10.3390/cancers15174346] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/23/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
PURPOSE Thermal ablation is widely recognized as the standard of care for small-size unresectable colorectal liver metastases (CRLM). For larger CRLM safety, local control and overall efficacy are not well established and insufficiently validated. The purpose of this comparative series was to analyze outcomes for intermediate-size versus small-size CRLM. MATERIAL AND METHODS Patients treated with thermal ablation between December 2000 and November 2021 for small-size and intermediate-size CRLM were included. The primary endpoints were complication rate and local control (LC). Secondary endpoints included local tumor progression-free survival (LTPFS) and overall survival (OS). RESULTS In total, 59 patients were included in the intermediate-size (3-5 cm) group and 221 in the small-size (0-3 cm) group. Complications were not significantly different between the two groups (p = 0.546). No significant difference between the groups was found in an overall comparison of OS (HR 1.339; 95% CI 0.824-2.176; p = 0.239). LTPFS (HR 3.388; p < 0.001) and LC (HR 3.744; p = 0.004) were superior in the small-size group. Nevertheless, the 1-, 3-, and 5-year LC for intermediate-size CRLM was still 93.9%, 85.4%, and 81.5%, and technical efficacy improved over time. CONCLUSIONS Thermal ablation for intermediate-size unresectable CRLM is safe and induces long-term LC in the vast majority. The results of the COLLISION-XL trial (unresectable colorectal liver metastases: stereotactic body radiotherapy versus microwave ablation-a phase II randomized controlled trial for CRLM 3-5 cm) are required to provide further clarification of the role of local ablative methods for intermediate-size unresectable CRLM.
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Affiliation(s)
- Madelon Dijkstra
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
| | - Susan van der Lei
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
| | - Robbert S. Puijk
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
| | - Hannah H. Schulz
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
| | - Danielle J. W. Vos
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
| | - Florentine E. F. Timmer
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
| | - Hester J. Scheffer
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
- Department of Radiology and Nuclear Medicine, Noordwest Ziekenhuisgroep, 1815 JD Alkmaar, The Netherlands
| | - Tineke E. Buffart
- Department of Medical Oncology, Amsterdam University Medical Centers, Location VUmc, Cancer Center Amsterdam, 1081 HV Amsterdam, The Netherlands
| | | | - Birgit I. Lissenberg-Witte
- Department of Epidemiology and Data Science, Amsterdam University Medical Centers, Location VUmc, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Rutger-Jan Swijnenburg
- Department of Surgery, Amsterdam University Medical Centers, Location VUmc, Cancer Center Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Kathelijn S. Versteeg
- Department of Medical Oncology, Amsterdam University Medical Centers, Location VUmc, Cancer Center Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Martijn R. Meijerink
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, 1081 HV Amsterdam, The Netherlands; (M.D.); (M.R.M.)
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Stavrovski T, Pereira P. Role of interventional oncology for treatment of liver metastases: evidence based best practice. Br J Radiol 2022; 95:20211376. [PMID: 35976260 PMCID: PMC9815747 DOI: 10.1259/bjr.20211376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 07/17/2022] [Accepted: 07/28/2022] [Indexed: 01/13/2023] Open
Abstract
The presence of liver metastases is associated with a poor prognosis in many cancer diseases. Multiple studies during the last decades aimed to find out the best multimodal therapy to achieve an ideal, safe and highly effective treatment. In addition to established therapies such as systemic therapy, surgery and radiation therapy, interventional oncology with thermal ablation, transarterial chemoembolisation and radioembolisation, is becoming the fourth pillar of cancer therapies and is part of a personalised treatments' strategy. This review informs about the most popular currently performed interventional oncological treatments in patients with liver metastases.
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Affiliation(s)
- Tomislav Stavrovski
- Zentrum für Radiologie, Minimal-Invasive Therapien und Nuklearmedizin, SLK-Kliniken Heilbronn GmbH, Am Gesundbrunnen, Heilbronn, Germany
| | - Philippe Pereira
- Zentrum für Radiologie, Minimal-Invasive Therapien und Nuklearmedizin, SLK-Kliniken Heilbronn GmbH, Am Gesundbrunnen, Heilbronn, Germany
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Hellingman T, Galjart B, Henneman JJ, Görgec B, Bijlstra OD, Meijerink MR, Vahrmeijer AL, Grünhagen DJ, van der Vliet HJ, Swijnenburg RJ, Verhoef C, Kazemier G. Limited Effect of Perioperative Systemic Therapy in Patients Selected for Repeat Local Treatment of Recurrent Colorectal Cancer Liver Metastases. ANNALS OF SURGERY OPEN 2022; 3:e164. [PMID: 37601612 PMCID: PMC10431462 DOI: 10.1097/as9.0000000000000164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 04/12/2022] [Indexed: 11/26/2022] Open
Abstract
Objectives The aim of this study was to determine the potential benefit of perioperative systemic therapy on overall and progression-free survival after repeat local treatment in patients suffering from recurrent colorectal cancer liver metastasis (CRLM). Background The optimal treatment strategy in patients with recurrent CRLM needs to be clarified, in particular for those suffering from early recurrence of CRLM. Methods In this multicenter observational cohort study, consecutive patients diagnosed with recurrent CRLM between 2009 and 2019 were retrospectively identified in 4 academic liver surgery centers. Disease-free interval after initial local treatment of CRLM was categorized into recurrence within 6, between 6 and 12, and after 12 months. Perioperative systemic therapy consisted of induction, (neo)adjuvant, or combined regimens. Overall and progression-free survival after repeat local treatment of CRLM were analyzed by multivariable Cox regression analyses, resulting in adjusted hazard ratios (aHRs). Results Out of 303 patients included for analysis, 90 patients received perioperative systemic therapy for recurrent CRLM. Favorable overall (aHR, 0.45; 95% confidence interval [CI], 0.26-0.75) and progression-free (aHR, 0.53; 95% CI, 0.35-0.78) survival were observed in patients with a disease-free interval of more than 12 months. No significant difference in overall and progression-free survival was observed in patients receiving perioperative systemic therapy at repeat local treatment of CRLM, stratified for disease-free interval, previous exposure to chemotherapy, and RAS mutation status. Conclusions No benefit of perioperative systemic therapy was observed in overall and progression-free survival after repeat local treatment of recurrent CRLM.
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Affiliation(s)
- Tessa Hellingman
- From the Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Boris Galjart
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Julia J. Henneman
- From the Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Burak Görgec
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Okker D. Bijlstra
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Martijn R. Meijerink
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, University of Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | | | - Dirk J. Grünhagen
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Hans J. van der Vliet
- Department of Medical Oncology, Amsterdam UMC, Vrije Universiteit Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands
- Lava Therapeutics, Utrecht, The Netherlands
| | - Rutger-Jan Swijnenburg
- From the Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Cornelis Verhoef
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Geert Kazemier
- From the Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Microwave Ablation, Radiofrequency Ablation, Irreversible Electroporation, and Stereotactic Ablative Body Radiotherapy for Intermediate Size (3-5 cm) Unresectable Colorectal Liver Metastases: a Systematic Review and Meta-analysis. Curr Oncol Rep 2022; 24:793-808. [PMID: 35298796 PMCID: PMC9054902 DOI: 10.1007/s11912-022-01248-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2022] [Indexed: 12/12/2022]
Abstract
Purpose of Review Based on good local control rates and an excellent safety profile, guidelines consider thermal ablation the gold standard to eliminate small unresectable colorectal liver metastases (CRLM). However, efficacy decreases exponentially with increasing tumour size. The preferred treatment for intermediate-size unresectable CRLM remains uncertain. This systematic review and meta-analysis compare safety and efficacy of local ablative treatments for unresectable intermediate-size CRLM (3–5 cm). Recent Findings We systematically searched for publications reporting treatment outcomes of unresectable intermediate-size CRLM treated with thermal ablation, irreversible electroporation (IRE) or stereotactic ablative body-radiotherapy (SABR). No comparative studies or randomized trials were found. Literature to assess effectiveness was limited and there was substantial heterogeneity in outcomes and study populations. Per-patient local control ranged 22–90% for all techniques; 22–89% (8 series) for thermal ablation, 44% (1 series) for IRE, and 67–90% (1 series) for SABR depending on radiation dose. Summary Focal ablative therapy is safe and can induce long-term disease control, even for intermediate-size CRLM. Although SABR and tumuor-bracketing techniques such as IRE are suggested to be less susceptible to size, evidence to support any claims of superiority of one technique over the other is unsubstantiated by the available evidence. Future prospective comparative studies should address local-tumour-progression-free-survival, local control rate, overall survival, adverse events, and quality-of-life.
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