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Darweesh SK, Gad AA. Percutaneous microwave ablation for HCV-related hepatocellular carcinoma: Efficacy, safety, and survival. TURKISH JOURNAL OF GASTROENTEROLOGY 2020; 30:445-453. [PMID: 31060999 DOI: 10.5152/tjg.2019.17191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND/AIMS Hepatocellular carcinoma (HCC) has a poor prognosis if managed late. Percutaneous microwave ablation (MWA) emerged as one of the top therapeutic decisions for non-surgical patients. The aim of the present study aim was to evaluate the efficacy, side effects, and survival after MWA of hepatitis C virus (HCV)-related HCC tumors with spectrum sizes up to 5 cm. MATERIALS AND METHODS Fifty-nine patients with early HCC were treated in the Hepatology Department using percutaneous MWA. Patients were assessed for side effects and efficacy that includes the rate of complete ablation, primary or de novo recurrence, and survival. RESULTS Complete ablation was achieved in 57 (96.6%) patients treated by MWA, with a minor complication rate of 3.3% (n=2) including liver abscess formation and abdominal skin burn. The ablation rates in lesions <3 versus 3-5 cm were not different. Of the patients, 3 (5%) had primary recurrence in the treated HCC tumors, de novo lesions (secondary recurrence) developed in 8 (13.5%, 5 of them >3 cm), and 2 (3.3%) had malignant portal vein thrombosis. The survival rates were 95.4% and 69% at 1 and 2 years, respectively. CONCLUSION Percutaneous MWA had achieved a safe and effective treatment with good overall survival in patients with HCV-related HCC.
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Affiliation(s)
- Samar K Darweesh
- Department of Hepato-gastroenterology and Tropical Medicine, Cairo University School of Medicine, Egypt
| | - Amal A Gad
- Department of Internal Medicine, Suez Canal University School of Medicine, Ismailia, Egypt
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Du S, Yang JZ, Chen J, Zhou WG, Sun YY. Comparisons of recurrence-free survival and overall survival between microwave versus radiofrequency ablation treatment for hepatocellular carcinoma: A multiple centers retrospective cohort study with propensity score matching. PLoS One 2020; 15:e0227242. [PMID: 31918433 PMCID: PMC6952252 DOI: 10.1371/journal.pone.0227242] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 12/16/2019] [Indexed: 12/12/2022] Open
Abstract
Both microwave (MW) ablation and radiofrequency (RF) ablation are widely used for hepatocellular carcinoma (HCC) treatments in clinic. However, it is still unclear if ablative methods could influence the recurrence-free survival (RFS) and overall survival (OS) of HCC patients. Therefore, we carried out this multi-center retrospective cohort study to investigate the differences of recurrence-free survival (RFS) and overall survival (OS) between MW ablation and RF ablation by survival analysis. From January 2014 to December 2016, patients who received thermal ablation surgery for HCC treatment were screened. Finally, 452 patients met the eligibility criteria and finished the follow-up. Univariable and multivariable regression analyses were used to identify independent predictive factors of the RFS and OS. Also, propensity score matching (PSM) was used to balance the bias between two groups. Finally, we found that before the PSM, the univariable and multivariable regression analyses revealed that there were no significant differences on the RFS between two groups. Same results were obtained for the OS. After PSM, 115 pairs of patients were created, and both the univariable and multivariable regression analyses suggested that there were still no significant differences on the RFS between two groups. Same results were obtained for the OS. In conclusion, our present study showed that there were no significant differences between MW ablation and RF ablation for HCC patients on the RFS or OS.
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Affiliation(s)
- Shibin Du
- Department of Anesthesiology, Shenzhen University Clinical Medical Academy, Shenzhen University, Shenzhen University General Hospital, Shenzhen, China
| | - Jian-Zhi Yang
- Department of Anesthesiology, Hanzhong Central Hospital, Hanzhong, Shanxi, China
| | - Jing Chen
- Department of Endocrinology, The Second Affiliated Hospital, Kunming Medical University, Kunming, Yunnan, China
| | - Wei-gang Zhou
- Department of Anesthesiology, Hanzhong Central Hospital, Hanzhong, Shanxi, China
- * E-mail: (WZ); (YS)
| | - Yan-Yan Sun
- Department of Anesthesiology, Shenzhen University Clinical Medical Academy, Shenzhen University, Shenzhen University General Hospital, Shenzhen, China
- * E-mail: (WZ); (YS)
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Abstract
In recent years, there has been increased utilization of microwave ablation (MWA) in the treatment of soft tissue tumors. MWA has several theoretical advantages over radiofrequency ablation (RFA) by achieving a more rapid and sustained heating of tissues, increased efficacy in tissues with poor thermal conductivity, and less susceptibility to heat sink effect. While its greater power output has led to appropriate caution when applying this energy to soft tissue tumors, many commonly held beliefs regarding contraindications to MWA are unsupported by data and have been passed along based on experience with RFA. The goal of this article is to review the use of MWA in challenging clinical situations along with the existing evidence for its use.
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Affiliation(s)
- Amanda R Smolock
- Division of Interventional Radiology, Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
| | - Colette Shaw
- Division of Interventional Radiology, Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
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Laparoscopic liver resection for liver tumours in proximity to major vasculature: A single-center comparative study. Eur J Surg Oncol 2019; 46:539-547. [PMID: 31668978 DOI: 10.1016/j.ejso.2019.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 10/13/2019] [Accepted: 10/14/2019] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND With growing popularity and experience in laparoscopic liver surgery, the options for more difficult procedures increase. Only small case series have been published regarding laparoscopic liver resection (LLR) for tumours in proximity to major vessels (MVs). The aim was to compare outcomes of LLR for tumours located less or more than 15 mm from MVs. METHODS This was a retrospective analysis of a prospectively collected database of consecutive LLR (October 2011-August 2017). Proximity to MVs (PMV) was defined as lesions located within 15 mm to the caval vein, hepatic veins and portal vein (main trunk and first branches). The control group were all lesions located more than 15 mm from MVs. RESULTS Some 60/235 LLR were performed for lesions in proximity to major vasculature (24%). In the PMV group, median IWATE Difficulty Score was higher (8.5 (IQR: 6.0-9.0) VS 5.0 (IQR: 3.0-6.0), p < 0.001) as was the use of CUSA® (45.0% VS 8.6%, p < 0.001) and Pringle manoeuvre (8.3% VS 1.7%; p = 0.028). Operative time was longer (180min (IQR: 140-210) VS 120min (IQR: 75-150), p < 0.001) and blood loss was higher (190 ml (IQR: 100-325) VS 75 ml (IQR: 50-220), p < 0.001) in the PMV group. There was no difference in perioperative blood transfusion (3.3% VS 1.7%, p = 0.60) or postoperative morbidity (15.0% VS 14.3%, p = 0.89). There was no mortality in both groups. On mean follow-up of 21 months, no significant differences could be found in disease free (p = 0.77) and overall survival (p = 0.12). CONCLUSION In experienced hands, LLR of lesions in proximity to MVs is safe and feasible with acceptable short and long-term results.
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Liu W, Zou R, Wang C, Qiu J, Shen J, Liao Y, Yang Z, Zhang Y, Wang Y, Yuan Y, Li K, Zuo D, He W, Zheng Y, Li B, Yuan Y. Microwave ablation versus resection for hepatocellular carcinoma within the Milan criteria: a propensity-score analysis. Ther Adv Med Oncol 2019; 11:1758835919874652. [PMID: 31588210 PMCID: PMC6740202 DOI: 10.1177/1758835919874652] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 08/16/2019] [Indexed: 12/19/2022] Open
Abstract
Background: Whether the efficient heat-generating mechanism of microwave ablation (MWA) is comparable with resection (RES) in treating hepatocellular carcinoma (HCC) remains unclear. Methods: This retrospective cohort study comprised 126 and 1183 patients with HCC meeting the Milan criteria who received MWA or RES between 2002 and 2017. We compared 5-year overall survival (OS) and recurrence-free survival (RFS) using both propensity-score matching (PSM) and inverse-probability-of-treatment-weighting (IPW) analysis and investigated the prognostic factors with multivariate Cox analysis. Results: After PSM (1:2), although MWA (n = 116) offered decreased 5-year RFS (30.6% versus 57.5%, p < 0.001) compared with RES (n = 212), both treatments provided similar 5-year OS (82.2% versus 80.5%, p = 0.360) because most patients with intrahepatic recurrence remained eligible for repeat treatments; similar results were found in the IPW analysis. Additionally, the comparable efficacy of MWA and RES was consistent across all subgroups: those with solitary HCC ⩽ 3.0 cm or >3.0 cm, or multifocal HCCs within the Milan criteria, patients with liver function of albumin–bilirubin grade 1 or 2, and older (⩾60 years) or younger (<60 years) patients. Multivariate Cox analysis confirmed that no difference was seen between MWA and RES in OS (hazard ratio = 0.85; p = 0.581) in the overall population; similar results were obtained in the propensity-score-matched and IPW cohorts. Conclusions: Compared with RES, MWA offered worse RFS for HCC within the Milan criteria; however, both treatments provided equivalent long-term OS because most patients with intrahepatic recurrence remained eligible for repeat treatments.
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Affiliation(s)
- Wenwu Liu
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Ruhai Zou
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Chenwei Wang
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Jiliang Qiu
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Jingxian Shen
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Yadi Liao
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Zhiwen Yang
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Yuanping Zhang
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Yongjin Wang
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Yichuan Yuan
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Kai Li
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Dinglan Zuo
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Wei He
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Yun Zheng
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Binkui Li
- Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, Guangzhou, PR China
| | - Yunfei Yuan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Sun Yat-sen University Cancer Centre, 651 Dongfeng East Road, Guangzhou, Guangdong 510060, PR China
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Collins JA, Heiselman JS, Clements LW, Weis JA, Brown DB, Miga MI. Toward Image Data-Driven Predictive Modeling for Guiding Thermal Ablative Therapy. IEEE Trans Biomed Eng 2019; 67:1548-1557. [PMID: 31494543 DOI: 10.1109/tbme.2019.2939686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Accurate prospective modeling of microwave ablation (MWA) procedures can provide powerful planning and navigational information to physicians. However, patient-specific tissue properties are generally unavailable and can vary based on factors such as relative perfusion and state of disease. Therefore, a need exists for modeling frameworks that account for variations in tissue properties. METHODS In this study, we establish an inverse modeling approach to reconstruct a set of tissue properties that best fit the model-predicted and observed ablation zone extents in a series of phantoms of varying fat content. We then create a model of these tissue properties as a function of fat content and perform a comprehensive leave-one-out evaluation of the predictive property model. Furthermore, we validate the inverse-model predictions in a separate series of phantoms that include co-recorded temperature data. RESULTS This model-based approach yielded thermal profiles in close agreement with experimental measurements in the series of validation phantoms (average root-mean-square error of 4.8 °C). The model-predicted ablation zones showed compelling overlap with observed ablations in both the series of validation phantoms (93.4 ± 2.2%) and the leave-one-out cross validation study (86.6 ± 5.3%). These results demonstrate an average improvement of 17.3% in predicted ablation zone overlap when comparing the presented property-model to properties derived from phantom component volume fractions. CONCLUSION These results demonstrate accurate model-predicted ablation estimates based on image-driven determination of tissue properties. SIGNIFICANCE The work demonstrates, as a proof-of-concept, that physical modeling parameters can be linked with quantitative medical imaging to improve the utility of predictive procedural modeling for MWA.
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Shakeri S, Raman SS. Trends in Percutaneous Thermal Ablation Therapies in the Treatment of T1a Renal Cell Carcinomas Rather than Partial Nephrectomy/Radical Nephrectomy. Semin Intervent Radiol 2019; 36:183-193. [PMID: 31435126 DOI: 10.1055/s-0039-1694714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
With the increased incidence of stage T1a renal cell carcinoma (RCC) has come the recognition that these lesions tend to be low grade and slow growing, with low probability of metastasis not necessarily requiring surgery. As alternatives to surgery, both active surveillance and ablation have been advocated for the management of selected patients with stage T1a renal cancers due to slow rate of tumor growth and low metastatic potential based on recent epidemiological studies. Thermal ablation also has consistently reported favorable complication and renal preservation rates compared with surgical approaches. However, most studies are single-center case series and meta-analysis of these series and comparative prospective series with long-term follow-up are lacking. The purpose of this article is to review the principal thermal ablation modalities and oncological outcomes for the treatment of stage T1 RCCs with long-term follow-up.
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Affiliation(s)
- Sepideh Shakeri
- Department of Radiology, University of California, Los Angeles
| | - Steven S Raman
- Department of Radiology, University of California, Los Angeles.,Department of Urology, University of California, Los Angeles
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Glassberg MB, Ghosh S, Clymer JW, Qadeer RA, Ferko NC, Sadeghirad B, Wright GW, Amaral JF. Microwave ablation compared with radiofrequency ablation for treatment of hepatocellular carcinoma and liver metastases: a systematic review and meta-analysis. Onco Targets Ther 2019; 12:6407-6438. [PMID: 31496742 PMCID: PMC6698169 DOI: 10.2147/ott.s204340] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 06/29/2019] [Indexed: 12/12/2022] Open
Abstract
Purpose Percutaneous ablation techniques, including microwave ablation (MWA) and radiofrequency ablation (RFA), have become important minimally invasive treatment options for liver cancer. This systematic review compared MWA with RFA for treatment of liver cancer. Methods The systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A systematic search of MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials was conducted for randomized and observational studies published from 2006 onwards. A random-effects model was used for meta-analyses and local tumor progression (LTP), technique efficacy, overall survival (OS), disease-free survival (DFS), intrahepatic de novo lesions (IDL), extrahepatic metastases (EHM), length of stay (LOS), and complications were analyzed. Subgroup and sensitivity analyses were also conducted. Results Of 1379 studies identified, 28 randomized and observational studies met inclusion criteria. The main analysis demonstrated that LTP was significantly reduced by 30% with MWA versus RFA (RR=0.70; P=0.02) (all studies) and by 45% with MWA versus RFA (RR=0.55; P=0.007) (randomized studies only). There were no significant differences between MWA and RFA for other efficacy and safety outcomes. Higher frequency (2450 MHz) and larger tumor size (≥2.5 cm) are amongst variables that may be associated with improved outcomes for MWA. Sensitivity analyses were generally congruent with the main results. Conclusion MWA is at least as safe and effective as RFA for treating liver cancer and demonstrated significantly reduced LTP rates. Future studies should assess time and costs associated with these two treatment modalities.
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Affiliation(s)
| | - Sudip Ghosh
- Health Economics and Market Access, Ethicon Inc, Cincinnati, OH, USA
| | | | | | | | | | | | - Joseph F Amaral
- Health Economics and Market Access, Ethicon Inc, Cincinnati, OH, USA
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Longo KC, Knott EA, Watson RF, Swietlik JF, Vlaisavljevich E, Smolock AR, Xu Z, Cho CS, Mao L, Lee FT, Ziemlewicz TJ. Robotically Assisted Sonic Therapy (RAST) for Noninvasive Hepatic Ablation in a Porcine Model: Mitigation of Body Wall Damage with a Modified Pulse Sequence. Cardiovasc Intervent Radiol 2019; 42:1016-1023. [PMID: 31041527 PMCID: PMC7456499 DOI: 10.1007/s00270-019-02215-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/31/2019] [Indexed: 01/17/2023]
Abstract
PURPOSE Robotically assisted sonic therapy (RAST) is a nonthermal, noninvasive ablation method based on histotripsy. Prior animal studies have demonstrated the ability to create hepatic ablation zones at the focal point of an ultrasound therapy transducer; however, these treatments resulted in thermal damage to the body wall within the path of ultrasound energy delivery. The purpose of this study was to evaluate the efficacy and safety of a pulse sequence intended to mitigate prefocal body wall injury. MATERIALS AND METHODS Healthy swine (n = 6) underwent hepatic RAST (VortxRx software version 1.0.1.3, HistoSonics, Ann Arbor MI) in the right hepatic lobe. A 3.0 cm spherical ablation zone was prescribed for each. Following treatment, animals underwent MRI which was utilized for ablation zone measurement, evaluation of prefocal injury, and assessment of complications. Each animal was euthanized, underwent necropsy, and the tissue was processed for histopathologic analysis of the ablation zone and any other sites concerning for injury. RESULTS No prefocal injury was identified by MRI or necropsy in the body wall or tissues overlying the liver. Ablation zones demonstrated uniform cell destruction, were nearly spherical (sphericity index = 0.988), and corresponded closely to the prescribed size (3.0 × 3.1 × 3.4 cm, p = 0.70, 0.36, and 0.01, respectively). Ablation zones were associated with portal vein (n = 3, one occlusive) and hepatic vein thrombosis (n = 4, one occlusive); however, bile ducts remained patent within ablation zones (n = 2). CONCLUSIONS Hepatic RAST performed with a modified ultrasound pulse sequence in a porcine model can mitigate prefocal body wall injuries while maintaining treatment efficacy. Further study of hepatic RAST appears warranted, particularly in tumor models.
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Affiliation(s)
- Katherine C Longo
- Department of Radiology, University of Wisconsin Hospital and Clinics, 600 Highland Ave, Madison, WI, 53705, USA.
| | - Emily A Knott
- Department of Radiology, University of Wisconsin Hospital and Clinics, 600 Highland Ave, Madison, WI, 53705, USA
| | - Rao F Watson
- Department of Pathology, University of Wisconsin, Madison, USA
| | - John F Swietlik
- Department of Radiology, University of Wisconsin Hospital and Clinics, 600 Highland Ave, Madison, WI, 53705, USA
| | - Eli Vlaisavljevich
- Department of Biomedical Engineering and Mechanics, Virginia Polytechnic and State University, Blacksburg, USA
| | - Amanda R Smolock
- Division of Interventional Radiology, Department of Radiology, University of Pennsylvania, Philadelphia, USA
| | - Zhen Xu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, USA
| | - Clifford S Cho
- Department of Surgery, University of Michigan, Ann Arbor, USA
| | - Lu Mao
- Department of Biostatistics and Medical Informatics, University of Wisconsin, Madison, USA
| | - Fred T Lee
- Department of Radiology, University of Wisconsin Hospital and Clinics, 600 Highland Ave, Madison, WI, 53705, USA
- Department of Biomedical Engineering, University of Wisconsin, Madison, USA
- Department of Urology, University of Wisconsin, Madison, USA
| | - Timothy J Ziemlewicz
- Department of Radiology, University of Wisconsin Hospital and Clinics, 600 Highland Ave, Madison, WI, 53705, USA
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Izzo F, Granata V, Grassi R, Fusco R, Palaia R, Delrio P, Carrafiello G, Azoulay D, Petrillo A, Curley SA. Radiofrequency Ablation and Microwave Ablation in Liver Tumors: An Update. Oncologist 2019; 24:e990-e1005. [PMID: 31217342 DOI: 10.1634/theoncologist.2018-0337] [Citation(s) in RCA: 246] [Impact Index Per Article: 49.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 04/15/2019] [Indexed: 12/23/2022] Open
Abstract
This article provides an overview of radiofrequency ablation (RFA) and microwave ablation (MWA) for treatment of primary liver tumors and hepatic metastasis. Only studies reporting RFA and MWA safety and efficacy on liver were retained. We found 40 clinical studies that satisfied the inclusion criteria. RFA has become an established treatment modality because of its efficacy, reproducibility, low complication rates, and availability. MWA has several advantages over RFA, which may make it more attractive to treat hepatic tumors. According to the literature, the overall survival, local recurrence, complication rates, disease-free survival, and mortality in patients with hepatocellular carcinoma (HCC) treated with RFA vary between 53.2 ± 3.0 months and 66 months, between 59.8% and 63.1%, between 2% and 10.5%, between 22.0 ± 2.6 months and 39 months, and between 0% and 1.2%, respectively. According to the literature, overall survival, local recurrence, complication rates, disease-free survival, and mortality in patients with HCC treated with MWA (compared with RFA) vary between 22 months for focal lesion >3 cm (vs. 21 months) and 50 months for focal lesion ≤3 cm (vs. 27 months), between 5% (vs. 46.6%) and 17.8% (vs. 18.2%), between 2.2% (vs. 0%) and 61.5% (vs. 45.4%), between 14 months (vs. 10.5 months) and 22 months (vs. no data reported), and between 0% (vs. 0%) and 15% (vs. 36%), respectively. According to the literature, the overall survival, local recurrence, complication rates, and mortality in liver metastases patients treated with RFA (vs. MWA) are not statistically different for both the survival times from primary tumor diagnosis and survival times from ablation, between 10% (vs. 6%) and 35.7% (vs. 39.6), between 1.1% (vs. 3.1%) and 24% (vs. 27%), and between 0% (vs. 0%) and 2% (vs. 0.3%). MWA should be considered the technique of choice in selected patients, when the tumor is ≥3 cm in diameter or is close to large vessels, independent of its size. IMPLICATIONS FOR PRACTICE: Although technical features of the radiofrequency ablation (RFA) and microwave ablation (MWA) are similar, the differences arise from the physical phenomenon used to generate heat. RFA has become an established treatment modality because of its efficacy, reproducibility, low complication rates, and availability. MWA has several advantages over RFA, which may make it more attractive than RFA to treat hepatic tumors. The benefits of MWA are an improved convection profile, higher constant intratumoral temperatures, faster ablation times, and the ability to use multiple probes to treat multiple lesions simultaneously. MWA should be considered the technique of choice when the tumor is ≥3 cm in diameter or is close to large vessels, independent of its size.
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Affiliation(s)
- Francesco Izzo
- Divisions of Hepatobiliary Surgery, "Istituto Nazionale dei Tumori IRCCS Fondazione G. Pascale", Naples, Italy
| | - Vincenza Granata
- Divisions of Radiology, "Istituto Nazionale dei Tumori IRCCS Fondazione G. Pascale", Naples, Italy
| | - Roberto Grassi
- Division of Radiology, "Università degli Studi della Campania Luigi Vanvitelli", Naples, Italy
| | - Roberta Fusco
- Divisions of Radiology, "Istituto Nazionale dei Tumori IRCCS Fondazione G. Pascale", Naples, Italy
| | - Raffaele Palaia
- Divisions of Hepatobiliary Surgery, "Istituto Nazionale dei Tumori IRCCS Fondazione G. Pascale", Naples, Italy
| | - Paolo Delrio
- Divisions of Abdominal Surgery, "Istituto Nazionale dei Tumori IRCCS Fondazione G. Pascale", Naples, Italy
| | - Gianpaolo Carrafiello
- Division of Radiology, Department of Health Science, University of Milan, Milan, Italy
| | - Daniel Azoulay
- Hepatobiliray Surgery and Liver Transplantation, Henri-Mondor Hospital, University Paris Est Creteil, Creteil, France
| | - Antonella Petrillo
- Divisions of Hepatobiliary Surgery, "Istituto Nazionale dei Tumori IRCCS Fondazione G. Pascale", Naples, Italy
| | - Steven A Curley
- Surgical Oncology, CHRISTUS Mother Frances Hospital, Tyler, Texas, USA
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Collins JA, Heiselman JS, Clements LW, Brown DB, Miga MI. Multiphysics modeling toward enhanced guidance in hepatic microwave ablation: a preliminary framework. J Med Imaging (Bellingham) 2019; 6:025007. [PMID: 31131291 DOI: 10.1117/1.jmi.6.2.025007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 04/23/2019] [Indexed: 12/14/2022] Open
Abstract
We compare a surface-driven, model-based deformation correction method to a clinically relevant rigid registration approach within the application of image-guided microwave ablation for the purpose of demonstrating improved localization and antenna placement in a deformable hepatic phantom. Furthermore, we present preliminary computational modeling of microwave ablation integrated within the navigational environment to lay the groundwork for a more comprehensive procedural planning and guidance framework. To achieve this, we employ a simple, retrospective model of microwave ablation after registration, which allows a preliminary evaluation of the combined therapeutic and navigational framework. When driving registrations with full organ surface data (i.e., as could be available in a percutaneous procedure suite), the deformation correction method improved average ablation antenna registration error by 58.9% compared to rigid registration (i.e., 2.5 ± 1.1 mm , 5.6 ± 2.3 mm of average target error for corrected and rigid registration, respectively) and on average improved volumetric overlap between the modeled and ground-truth ablation zones from 67.0 ± 11.8 % to 85.6 ± 5.0 % for rigid and corrected, respectively. Furthermore, when using sparse-surface data (i.e., as is available in an open surgical procedure), the deformation correction improved registration error by 38.3% and volumetric overlap from 64.8 ± 12.4 % to 77.1 ± 8.0 % for rigid and corrected, respectively. We demonstrate, in an initial phantom experiment, enhanced navigation in image-guided hepatic ablation procedures and identify a clear multiphysics pathway toward a more comprehensive thermal dose planning and deformation-corrected guidance framework.
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Affiliation(s)
- Jarrod A Collins
- Vanderbilt University, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Jon S Heiselman
- Vanderbilt University, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Logan W Clements
- Vanderbilt University, Department of Biomedical Engineering, Nashville, Tennessee, United States
| | - Daniel B Brown
- Vanderbilt University Medical Center, Department of Radiology and Radiological Sciences, Nashville, Tennessee, United States
| | - Michael I Miga
- Vanderbilt University, Department of Biomedical Engineering, Nashville, Tennessee, United States.,Vanderbilt University Medical Center, Department of Radiology and Radiological Sciences, Nashville, Tennessee, United States
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Takahashi H, Kahramangil B, Kose E, Berber E. A comparison of microwave thermosphere versus radiofrequency thermal ablation in the treatment of colorectal liver metastases. HPB (Oxford) 2018; 20:1157-1162. [PMID: 29929785 DOI: 10.1016/j.hpb.2018.05.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/17/2018] [Accepted: 05/28/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND Microwave thermosphere ablation (MTA) is a new generation technology. The aim of this study was to compare the efficacy of MTA and radiofrequency ablation (RFA) in achieving local tumor control in patients with colorectal liver metastasis (CRLM). METHODS This was a retrospective study of a prospective ablation database. Fifty-four patients with 155 CRLM lesions underwent RFA and 51 patients with 121 lesions underwent MTA. Patients were managed by a multidisciplinary team. Clinical and oncologic data were analyzed. Kaplan-Meier and Cox Proportional Hazards model were used for statistical analysis. RESULTS Demographics were similar between the two groups. Total ablation and operative times were significantly shorter in MTA group (19 vs. 37 mins, p < 0.001, 154 vs. 202 mins, p = 0.009). With a similar hospital stay (median 1), 90-day morbidity was similar (8 vs. 10%, p = 0.848), without mortality. Local recurrence (LR) rate per lesion was 20% in RFA and 10% in MTA group (p = 0.020). On Cox Proportion Hazards model, ablation modality and tumor size were independent predictors of LR. CONCLUSIONS This is the first study comparing the efficacy of RFA and MTA on CRLM. The results suggest that compared to RFA, MTA improves local tumor control, while significantly shortening operative time.
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Affiliation(s)
- Hideo Takahashi
- Department of General Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Bora Kahramangil
- Department of Endocrine Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Emin Kose
- Department of Endocrine Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Eren Berber
- Department of General Surgery, Cleveland Clinic, Cleveland, OH, USA; Department of Endocrine Surgery, Cleveland Clinic, Cleveland, OH, USA.
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Garnon J, Koch G, Caudrelier J, Boatta E, Rao P, Nouri-Neuville M, Ramamurthy N, Cazzato RL, Gangi A. Hydrodissection of the Retrohepatic Space: A Technique to Physically Separate a Liver Tumour from the Inferior Vena Cava and the Ostia of the Hepatic Veins. Cardiovasc Intervent Radiol 2018; 42:137-144. [PMID: 30386883 DOI: 10.1007/s00270-018-2105-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 10/27/2018] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To report a technique of percutaneous retrohepatic hydrodissection, highlighting its potential to physically separate liver tumours from the inferior vena cava (IVC) and the ostia of the hepatic veins (HV). MATERIALS AND METHODS Between December 2017 and April 2018, hydrodissection of the retrohepatic IVC was performed in 5 patients (5 females; mean age 64.5 years) undergoing percutaneous ablation of 5 liver metastases (mean size: 3.6 cm) located adjacent to the IVC. Number of hydrodissection needles, volume of hydrodissection, separation of tumour/liver parenchyma from IVC/HV post-hydrodissection; technical success of ablation; and complications were tabulated. RESULTS Two to three 22G spinal needles were required per case for adequate dissection. Mean volume to obtain sufficient hydrodissection was 410 ml on average. Physical separation of the IVC and tumour/hepatic parenchyma was successful in all cases, by 9 mm on average (range 5-12 mm). It also leaded to physical separation of the ostia of the right and middle HV in all cases. There was no early or delayed complication, notably no venous thrombosis in the post-operative period. All lesions but one were completely ablated after one session at 3-month follow-up. The patient with residual tumour was successfully retreated. CONCLUSION Retrohepatic hydrodissection is a feasible technique to separate a tumour from the IVC and/or ostia of the HV. This could potentially limit the heat-sink effect/reduce the risk of thrombosis. Larger follow-up studies are required to assess efficacy on a long-term basis.
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Affiliation(s)
- Julien Garnon
- Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'hôpital, 67096, Strasbourg Cedex, France.
| | - Guillaume Koch
- Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'hôpital, 67096, Strasbourg Cedex, France
| | - Jean Caudrelier
- Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'hôpital, 67096, Strasbourg Cedex, France
| | - Emanuele Boatta
- Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'hôpital, 67096, Strasbourg Cedex, France
| | - Pramod Rao
- Laboratoires ICube, CNRS, Université de Strasbourg, 300, Bd Sebastien Brant, 67400, Illkirch-Graffenstaden, France
| | - Maud Nouri-Neuville
- Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'hôpital, 67096, Strasbourg Cedex, France
| | - Nitin Ramamurthy
- Department of Radiology, Norfolk and Norwich University Hospital, Colney Lane, Norwich, NR4 7UY, UK
| | - Roberto Luigi Cazzato
- Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'hôpital, 67096, Strasbourg Cedex, France
| | - Afshin Gangi
- Department of Interventional Radiology, Nouvel Hôpital Civil, 1, place de l'hôpital, 67096, Strasbourg Cedex, France
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Zhan Y, Zhou F, Yu X, Luo F, Liu F, Liang P, Cheng Z, Han Z, Yu J. Quantitative dynamic contrast-enhanced ultrasound may help predict the outcome of hepatocellular carcinoma after microwave ablation. Int J Hyperthermia 2018; 35:105-111. [PMID: 30300039 DOI: 10.1080/02656736.2018.1483533] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Yong Zhan
- Department of Ultrasound, The 252th Hospital of Chinese PLA, Baoding, Hebei Province, People’s Republic of China
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Fubo Zhou
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Xiaoling Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Fei Luo
- Department of Ultrasound, The 252th Hospital of Chinese PLA, Baoding, Hebei Province, People’s Republic of China
| | - Fangyi Liu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Ping Liang
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Zhigang Cheng
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Zhiyu Han
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
| | - Jie Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, People’s Republic of China
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Stewart CL, Warner S, Ito K, Raoof M, Wu GX, Kessler J, Kim JY, Fong Y. Cytoreduction for colorectal metastases: liver, lung, peritoneum, lymph nodes, bone, brain. When does it palliate, prolong survival, and potentially cure? Curr Probl Surg 2018; 55:330-379. [PMID: 30526930 DOI: 10.1067/j.cpsurg.2018.08.004] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 08/28/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Camille L Stewart
- Division of Surgical Oncology, City of Hope National Medical Center, Duarte, CA
| | - Susanne Warner
- Division of Surgical Oncology, City of Hope National Medical Center, Duarte, CA
| | - Kaori Ito
- Department of Surgery, Michigan State University, Lansing, MI
| | - Mustafa Raoof
- Division of Surgical Oncology, City of Hope National Medical Center, Duarte, CA
| | - Geena X Wu
- Division of Thoracic Surgery, City of Hope National Medical Center, Duarte, CA
| | - Jonathan Kessler
- Department of Diagnostic Radiology, City of Hope National Medical Center, Duarte, CA
| | - Jae Y Kim
- Division of Thoracic Surgery, City of Hope National Medical Center, Duarte, CA
| | - Yuman Fong
- Division of Surgical Oncology, City of Hope National Medical Center, Duarte, CA.
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Liu W, Zheng Y, He W, Zou R, Qiu J, Shen J, Yang Z, Zhang Y, Wang C, Wang Y, Zuo D, Li B, Yuan Y. Microwave vs radiofrequency ablation for hepatocellular carcinoma within the Milan criteria: a propensity score analysis. Aliment Pharmacol Ther 2018; 48:671-681. [PMID: 30063081 DOI: 10.1111/apt.14929] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/09/2018] [Accepted: 07/12/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND Whether microwave ablation (MWA) challenges the standard role of radiofrequency ablation (RFA) in treating early-stage hepatocellular carcinoma (HCC) remains unclear. AIM To compare the efficacy of MWA vs RFA for treating primary HCC within the Milan criteria. METHODS From January 2002 to January 2017, the oncological outcomes after MWA (126 patients) and RFA (436 patients) were analysed by propensity score matching. RESULTS Before propensity score matching, for overall patients, MWA resulted in similar 5-year overall survival to RFA (80.1% vs 75.8%, P = 0.190) but better 5-year recurrence-free survival (28.1% vs 19.6%, P = 0.036). For solitary HCC ≤ 3 cm, MWA resulted in comparable 5-year overall survival (81.8% vs 77.1%, P = 0.170) to RFA but better 5-year recurrence-free survival (34.6% vs 24.0%, P = 0.042). After propensity score matching, MWA resulted in better 5-year overall survival (79.3% vs 68.4%, P = 0.021) and 5-year recurrence-free survival (27.9% vs 6.4%, P < 0.001) than RFA for HCC. For solitary HCC ≤3 cm, MWA resulted in comparable 5-year overall survival (81.2% vs 66.3%, P = 0.062) and 5-year recurrence-free survival (37.7% vs 17.4%, P = 0.088) to RFA. In Cox analysis, RFA modality, tumours located in risk areas and low serum albumin levels were unfavourable prognostic factors for overall survival. RFA modality, multiple tumours, tumour size and low serum albumin levels were unfavourable prognostic factors for recurrence-free survival (all P < 0.05). CONCLUSIONS RFA is inferior to MWA for treating HCC within the Milan criteria, but has comparable efficacy to MWA for solitary HCC ≤ 3 cm.
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Affiliation(s)
- Wenwu Liu
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Yun Zheng
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Wei He
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Ruhai Zou
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Ultrasound, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Jiliang Qiu
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Jingxian Shen
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Medical Imaging, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Zhiwen Yang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Yuanping Zhang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Chenwei Wang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Yongjin Wang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Dinglan Zuo
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Binkui Li
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
| | - Yunfei Yuan
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Centre, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Centre, Guangzhou, China
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Evaluation of the Heat Sink Effect After Transarterial Embolization When Performed in Combination with Thermal Ablation of the Liver in a Rabbit Model. Cardiovasc Intervent Radiol 2018; 41:1773-1778. [PMID: 30039505 DOI: 10.1007/s00270-018-2034-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/11/2018] [Indexed: 12/26/2022]
Abstract
PURPOSE To assess the contribution of the heat sink effect when combining thermal ablation with transarterial embolization (TAE). MATERIALS AND METHODS Radiofrequency ablation (RFA) or microwave ablation (MWA) were performed in the liver of non-tumor bearing rabbits. Three perfusion groups were used: rabbits that were killed then immediately ablated (non-perfused liver group to simulate embolized tumor with no heat sink), rabbits that underwent hepatic TAE followed by ablation (embolized liver group), and rabbits that underwent ablation while alive (normally perfused liver control group). For each perfusion group, 8 RFAs and 8 MWAs were performed. Probes were inserted using ultrasound guidance to avoid areas with major blood vessels. During ablation, temperatures were obtained from a thermocouple located 1 cm away from the ablation probe to assess heat conduction. With MWA, temperatures were also measured from the antennae tip. RESULTS For RFA, embolization of normal liver did not increase temperature conduction when compared to the control group. However, temperature conduction was significantly increased in the non-perfused group (simulating embolized tumor) compared to controls (p = 0.007). For MWA, neither embolization nor non-perfusion increased temperature conduction compared to controls. With MWA, the probe tip temperature was significantly higher in the non-perfused group compared to the control and embolized group. CONCLUSIONS In non-perfused tissue simulating tumor, RFA demonstrated modest enhancement of temperature conduction, whereas MWA did not. Embolization of normal liver did not affect RFA or MWA. Findings suggest that heat sink mitigation plays a limited role with combination embolization-ablation therapies, albeit more with RFA than MWA.
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68
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Kim C. Understanding the nuances of microwave ablation for more accurate post-treatment assessment. Future Oncol 2018; 14:1755-1764. [DOI: 10.2217/fon-2017-0736] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Microwave ablation (MWA) is a relatively new thermal modality for minimally invasive procedures compared with radiofrequency ablation. Although MWA and radiofrequency ablation are thermal modalities, their underlying physics and principles greatly differ. Consequently, it is imperative that clinicians be aware of how these differences impact realized ablation volumes to consistently ensure technical success and better patient outcomes. This paper will review the nuances specific to MWA technology (i.e., tissue properties, perfusion/heat sink effect, ablation assessment, imaging accuracy and tissue contraction) that are often overlooked based on familiarity with conventional thermal modalities to guide more accurate assessment of post-treatment MWA volumes.
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Affiliation(s)
- Christy Kim
- Angio Dynamics, Inc., 1850 Mt Diablo Blvd, Ste 660, Walnut Creek, CA 94596, USA
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69
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Perkons NR, Stein EJ, Nwaezeapu C, Wildenberg JC, Saleh K, Itkin-Ofer R, Ackerman D, Soulen MC, Hunt SJ, Nadolski GJ, Gade TP. Electrolytic ablation enables cancer cell targeting through pH modulation. Commun Biol 2018; 1:48. [PMID: 30271931 PMCID: PMC6123816 DOI: 10.1038/s42003-018-0047-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 04/05/2018] [Indexed: 02/07/2023] Open
Abstract
Minimally invasive ablation strategies enable locoregional treatment of tumors. One such strategy, electrolytic ablation, functions through the local delivery of direct current without thermal effects, facilitating enhanced precision. However, the clinical application of electrolytic ablation is limited by an incompletely characterized mechanism of action. Here we show that acid and base production at the electrodes precipitates local pH changes causing the rapid cell death that underlies macroscopic tumor necrosis at pH > 10.6 or < 4.8. The extent of cell death can be modulated by altering the local buffering capacity and antioxidant availability. These data demonstrate that electrolytic ablation is distinguished from other ablation strategies via its ability to induce cellular necrosis by directly altering the tumor microenvironment. These findings may enable further development of electrolytic ablation as a curative therapy for primary, early stage tumors.
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Affiliation(s)
- Nicholas R Perkons
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Perelman School of Medicine, 3400 Civic Center Boulevard, Bldg. 421, Philadelphia, PA, 19104, USA
- Department of Bioengineering, 210S 33rd St., Suite 240 Skirkanich Hall, Philadelphia, PA, 19104, USA
| | - Elliot J Stein
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Perelman School of Medicine, 3400 Civic Center Boulevard, Bldg. 421, Philadelphia, PA, 19104, USA
| | - Chike Nwaezeapu
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Joseph C Wildenberg
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Kamiel Saleh
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Roni Itkin-Ofer
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Daniel Ackerman
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Michael C Soulen
- Perelman School of Medicine, 3400 Civic Center Boulevard, Bldg. 421, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Stephen J Hunt
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Perelman School of Medicine, 3400 Civic Center Boulevard, Bldg. 421, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Gregory J Nadolski
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA
- Perelman School of Medicine, 3400 Civic Center Boulevard, Bldg. 421, Philadelphia, PA, 19104, USA
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Terence P Gade
- Penn Image-Guided Interventions Laboratory, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA.
- Perelman School of Medicine, 3400 Civic Center Boulevard, Bldg. 421, Philadelphia, PA, 19104, USA.
- Department of Bioengineering, 210S 33rd St., Suite 240 Skirkanich Hall, Philadelphia, PA, 19104, USA.
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA.
- Department of Cancer Biology, 421 Curie Boulevard, BRB II/III, Philadelphia, PA, 19104, USA.
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Sawicki JF, Luyen H, Mohtashami Y, Shea JD, Behdad N, Hagness SC. The Performance of Higher Frequency Microwave Ablation in the Presence of Perfusion. IEEE Trans Biomed Eng 2018; 66:257-262. [PMID: 29993418 DOI: 10.1109/tbme.2018.2836317] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE In this paper, we investigate the impact of perfusion on the performance of microwave ablation across a large frequency range. METHODS We designed multiple microwave ablation antennas to operate in liver tissue at discrete frequencies in the range 1.9-18 GHz. We performed electromagnetic simulations to calculate microwave power absorption patterns. Five-minute, 25 W ablation experiments were performed at each frequency in perfused and nonperfused ex vivo porcine livers, and thermal lesion dimensions were measured. RESULTS The volume of greatest microwave power absorption shrinks by two orders of magnitude as the frequency is increased from 1.9 to 18 GHz. Mean thermal lesion volumes are consistent across the frequency range for a given perfusion state and are about three times smaller under active perfusion. Typical thermal lesion diameters (perpendicular to the antenna axis) were 24 mm and 16 mm for nonperfused and perfused ablations, respectively. No significant differences in axial ratio were observed among different frequency groups in active-perfusion experiments. CONCLUSION Higher-frequency microwave ablation produces thermal lesions with volumes comparable to those achieved at lower frequencies, even in strongly perfused environments. SIGNIFICANCE Higher-frequency microwave ablation is appealing because it allows for more flexibility in antenna design. A critical issue concerning the feasibility of higher frequency microwave ablation, considering its strong dependence on heat diffusion to grow thermal lesions, is its performance in strongly perfused environments. This paper shows that higher frequency microwave ablation achieves thermal lesions comparable to those from microwave ablation performed at conventional frequencies in both non- and strongly perfused environments.
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Hu H, Chen GF, Yuan W, Wang JH, Zhai B. Microwave ablation with chemoembolization for large hepatocellular carcinoma in patients with cirrhosis. Int J Hyperthermia 2018; 34:1351-1358. [PMID: 29720001 DOI: 10.1080/02656736.2018.1462536] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE To evaluate the safety and long-term outcomes of microwave ablation (MWA) combined with transarterial chemoembolization (TACE) in a single stage for the treatment of hepatocellular carcinoma (HCC) with a maximum diameter of 5.0-10.0 cm. METHODS From January 2013 to December 2016, 84 consecutive HCC patients with cirrhosis from two medical centers who underwent MWA-TACE as a first-line treatment for up to three HCCs with maximum diameters of 5.0-10.0 cm were included. Feasibility, safety and effectiveness were evaluated. Recurrence-free survival (RFS) and overall survival (OS) were analyzed using the Kaplan-Meier method. Cox regression models were used to identify the prognostic factors. RESULTS The technique was successfully performed in all the patients. Grade 3 complications consisted of two cases of hemoperitoneum requiring blood transfusions and embolization. The cumulative incidence of local tumor progression was 25.8% at 3 years, with tumor size found to be the only significant predictive factor (p = .007). The cumulative incidence of OS was 81%, 68% and 49% at 1, 2 and 3 years, respectively. According to the Cox proportional hazards model analysis, serum AFP level, Child-Pugh class and tumor number were significant prognostic factors for OS. CONCLUSION MWA-TACE is a safe, feasible and effective therapy for the treatment of 5.0- to 10.0-cm HCC lesions in patients with cirrhosis.
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Affiliation(s)
- Hao Hu
- a Department of Interventional Oncology , Renji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai , China
| | - Guo Feng Chen
- b Department of Liver Surgery , The affiliated Huaian No.1 people's hospital of Nanjing Medical University ; Jiangsu , China
| | - Wei Yuan
- c Department of Interventional Radiology , Zhongshan Hospital, Shanghai Medical College, Fudan University ; Shanghai , China
| | - Jian Hua Wang
- c Department of Interventional Radiology , Zhongshan Hospital, Shanghai Medical College, Fudan University ; Shanghai , China
| | - Bo Zhai
- a Department of Interventional Oncology , Renji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai , China
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Loriaud A, Denys A, Seror O, Vietti Violi N, Digklia A, Duran R, Trillaud H, Hocquelet A. Hepatocellular carcinoma abutting large vessels: comparison of four percutaneous ablation systems. Int J Hyperthermia 2018; 34:1171-1178. [PMID: 29457510 DOI: 10.1080/02656736.2018.1440017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
PURPOSE To compare overall local tumour progression (OLTP), defined as the failure of primary ablation or local tumour progression, with single applicator monopolar radiofrequency ablation (RFA), microwave ablation (MWA), cluster-RFA and multi-bipolar radiofrequency (mbpRFA) in the treatment of hepatocellular carcinoma (HCC) ≤ 5 cm abutting large vessels (≥3 mm). MATERIALS AND METHODS This multicenter, retrospective, per-nodule study was performed from 2007 to 2015. The study was approved by the ethics review board, and informed consent was waived. A total of 160/914 HCC nodules treated by thermal ablation and abutting large vessels (40 per treatment group) treated by monopolar RFA, MWA, cluster-RFA or mbpRFA were matched for tumour size, alpha-feto-protein level and vessel size. OLTP rates were compared by the log-rank test and the multivariate Cox model after matching. RESULTS No differences were observed in tumour size, vessel size or alpha-feto-protein levels among the three groups (p = 1). The cumulative 4-year OLTP rates following monopolar RFA, cluster-RFA, multi-bipolar RFA and MWA were 50.5%, 16.3%, 16.3% and 44.2%, respectively (p = 0.036). On multivariate Cox regression, vessel size ≥10 mm, monopolar RFA and MWA were independent risk factors of OLTP compared to cluster-RFA or mbpRFA. CONCLUSION Multi-applicator RFA provides better local tumour control in HCC abutting large vessels than single-applicator techniques (monopolar RFA or MWA).
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Affiliation(s)
- Amélie Loriaud
- a Department of Diagnostic and Interventional Radiology , Hopital Saint-André, Centre Hospitalier Universitaire de Bordeaux , Bordeaux , France
| | - Alban Denys
- b Department of Radiodiagnostic and Interventional Radiology , Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne , Lausanne , Switzerland
| | - Olivier Seror
- c Department of Radiology , Hôpital Jean Verdier (Assistance Publique-Hôpitaux de Paris) , Bondy , France
| | - Naik Vietti Violi
- b Department of Radiodiagnostic and Interventional Radiology , Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne , Lausanne , Switzerland
| | - Antonia Digklia
- b Department of Radiodiagnostic and Interventional Radiology , Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne , Lausanne , Switzerland
| | - Rafael Duran
- b Department of Radiodiagnostic and Interventional Radiology , Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne , Lausanne , Switzerland
| | - Hervé Trillaud
- a Department of Diagnostic and Interventional Radiology , Hopital Saint-André, Centre Hospitalier Universitaire de Bordeaux , Bordeaux , France.,d EA IMOTION (Imagerie moléculaire et thérapies innovantes en oncologie) , Université de Bordeaux , Bordeaux , France
| | - Arnaud Hocquelet
- b Department of Radiodiagnostic and Interventional Radiology , Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne , Lausanne , Switzerland.,d EA IMOTION (Imagerie moléculaire et thérapies innovantes en oncologie) , Université de Bordeaux , Bordeaux , France
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Arellano RS. Ablation of Renal Cell Carcinoma: An Assessment of Currently Available Techniques. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.jradnu.2017.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Primavesi F, Swierczynski S, Klieser E, Kiesslich T, Jäger T, Urbas R, Hutter J, Neureiter D, Öfner D, Stättner S. Thermographic real-time-monitoring of surgical radiofrequency and microwave ablation in a perfused porcine liver model. Oncol Lett 2017; 15:2913-2920. [PMID: 29435018 PMCID: PMC5778864 DOI: 10.3892/ol.2017.7634] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 11/21/2017] [Indexed: 12/22/2022] Open
Abstract
Radiofrequency ablation (RFA) and microwave ablation (MWA) are currently the dominant modalities to treat unresectable liver tumors. Monitoring the ablation process with b-mode-sonography is often hampered by artefacts. Furthermore, vessels may cause cooling in the adjacent tumor target (heat-sink-effect) with risk of local recurrence. The present study evaluated infrared-thermography to monitor surgical RFA/MWA and detect heat-sink-effects in real-time. RFA and MWA of perfused porcine livers was conducted at peripheral and central-vessel-adjacent locations, and monitored by real-time thermography. Ablation was measured and evaluated by gross pathology. The mean time for ablation was significantly longer in RFA compared with MWA (8 vs. 2 min). Although mean macroscopic ablation diameter was similar (RFA, 3.17 cm; MWA, 3.38 cm), RFA showed a significant heat-sink-effect compared with MWA. The surface temperature during central RFA near vessels was 1/3 lower compared with peripheral RFA (47.11±8.35°C vs. 68.72±12.70°C; P<0.001). There was no significant difference in MWA (50.52±8.35°C vs. 50.18±10.35°C; P=0.74). In conclusion, thermography is suitable to monitor the correct ablation with MWA and RFA. The results of the current study demonstrated a significant heat-sink-effect for RFA, but not MWA near vessels. MWA reaches consistent surface temperatures much faster than RFA. With further in vivo validation, thermography may be useful to ensure appropriate ablation particularly near vulnerable or vascular structures.
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Affiliation(s)
- Florian Primavesi
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, Medical University Innsbruck, A-6020 Innsbruck, Austria.,Department of Surgery, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Stefan Swierczynski
- Department of Surgery, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Eckhard Klieser
- Institute of Pathology, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Tobias Kiesslich
- Department of Internal Medicine I, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Tarkan Jäger
- Department of Surgery, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Romana Urbas
- Institute of Pathology, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Jörg Hutter
- Department of Surgery, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Daniel Neureiter
- Institute of Pathology, Paracelsus Medical University, A-5020 Salzburg, Austria
| | - Dietmar Öfner
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, Medical University Innsbruck, A-6020 Innsbruck, Austria
| | - Stefan Stättner
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, Medical University Innsbruck, A-6020 Innsbruck, Austria
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Shady W, Petre EN, Do KG, Gonen M, Yarmohammadi H, Brown KT, Kemeny NE, D'Angelica M, Kingham PT, Solomon SB, Sofocleous CT. Percutaneous Microwave versus Radiofrequency Ablation of Colorectal Liver Metastases: Ablation with Clear Margins (A0) Provides the Best Local Tumor Control. J Vasc Interv Radiol 2017; 29:268-275.e1. [PMID: 29203394 DOI: 10.1016/j.jvir.2017.08.021] [Citation(s) in RCA: 166] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 08/26/2017] [Accepted: 08/29/2017] [Indexed: 02/08/2023] Open
Abstract
PURPOSE To identify and compare predictors of local tumor progression (LTP)-free survival (LTPFS) after radiofrequency (RF) ablation and microwave (MW) ablation of colorectal liver metastases (CLMs). MATERIALS AND METHODS This is a retrospective review of CLMs ablated from November 2009 to April 2015 (110 patients). Margins were measured on contrast-enhanced computed tomography (CT) 6 weeks after ablation. Clinical and technical predictors of LTPFS were assessed using a competing risk model adjusted for clustering. RESULTS Technique effectiveness (complete ablation) was 93% (79/85) for RF ablation and 97% (58/60) for MW ablation (P = .47). The median follow-up period was significantly longer for RF ablation than for MW ablation (56 months vs. 29 months) (P < .001). There was no difference in the local tumor progression (LTP) rates between RF ablation and MW ablation (P = 0.84). Significant predictors of shorter LTPFS for RF ablation on univariate analysis were ablation margins 5 mm or smaller (P < .001) (hazard ratio [HR]: 14.6; 95% confidence interval [CI]: 5.2-40.9) and perivascular tumors (P = .021) (HR: 2.2; 95% CI: 1.1-4.3); both retained significance on multivariate analysis. Significant predictors of shorter LTPFS on univariate analysis for MW ablation were ablation margins 5 mm or smaller (P < .001) (subhazard ratio: 11.6; 95% CI: 3.1-42.7) and no history of prior liver resection (P < .013) (HR: 3.2; 95%: 1.3-7.8); both retained significance on multivariate analysis. There was no LTP for tumors ablated with margins over 10 mm (median LTPFS: not reached). Perivascular tumors were not predictive for MW ablation (P = .43). CONCLUSIONS Regardless of the thermal ablation modality used, margins larger than 5 mm are critical for local tumor control, with no LTP noted for margins over 10 mm. Unlike RF ablation, the efficiency of MW ablation was not affected for perivascular tumors.
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Affiliation(s)
- Waleed Shady
- Section of Interventional Radiology, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Elena N Petre
- Section of Interventional Radiology, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Kinh Gian Do
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Mithat Gonen
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Hooman Yarmohammadi
- Section of Interventional Radiology, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Karen T Brown
- Section of Interventional Radiology, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Nancy E Kemeny
- Department of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Michael D'Angelica
- Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Peter T Kingham
- Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Stephen B Solomon
- Section of Interventional Radiology, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065
| | - Constantinos T Sofocleous
- Section of Interventional Radiology, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065.
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Singh S, Siriwardana PN, Johnston EW, Watkins J, Bandula S, Illing R, Davidson BR. Perivascular extension of microwave ablation zone: demonstrated using an ex vivo porcine perfusion liver model<sup/>. Int J Hyperthermia 2017; 34:1114-1120. [PMID: 29096566 DOI: 10.1080/02656736.2017.1400119] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Microwave ablation (MWA) has been proposed to suffer less from the heat sink effect compared to radiofrequency ablation but has been reported to cause extension of the ablation zone along intrahepatic vessels in clinical practice. To study this effect in detail, eight fresh porcine livers were perfused in an ex vivo organ perfusion system. Livers were perfused with oxygenated, O-positive human blood at 37 °C. Perfusion was discontinued immediately before ablation in the non-perfused group (n = 4) whilst in the perfused group (n = 4) perfusion was maintained during MWA (140 W X 2 min). Large intrahepatic vessels (> 6 mm) were avoided using ultrasound. MWA zones were bisected within 30 min of perfusion termination and sections were fixed in formalin and stained with H&E and NADH to assess cell viability. Magnetic resonance imaging (MRI) was performed on two livers (one perfused, one non-perfused) to provide imaging correlation before sectioning. Twenty-one out of a total of 30 MW ablation zones (70%) showed extension of the ablation zone along a vessel. There was no statistically significant difference (p = 1) in the incidence of ablation zone extension between perfused (9/13, 69%) and non-perfused organs (12/17, 71%). MRI also demonstrated ablation zone extension along blood vessels correlating with macroscopy in two livers. NADH staining also confirmed extension of the ablation zone. Liver MWA appears to be commonly associated with propagated thermal injury along adjacent vessels and occurs independent of active blood flow. In order to avoid possible complications through non-target tissue injury, this effect requires further investigation.
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Affiliation(s)
- Saurabh Singh
- a Interventional Oncology Service , University College Hospital , London , UK
| | - Pulathis Nilantha Siriwardana
- b Hepatopancreatobiliary and Liver Transplant Surgery Unit, University Department of Surgery , Royal Free London NHS Foundation Trust and University College London , London , UK
| | | | - Jennifer Watkins
- c Department of Cellular Pathology , Royal Free London NHS Foundation Trust , London , UK
| | - Steven Bandula
- a Interventional Oncology Service , University College Hospital , London , UK
| | - Rowland Illing
- a Interventional Oncology Service , University College Hospital , London , UK
| | - Brian Ritchie Davidson
- b Hepatopancreatobiliary and Liver Transplant Surgery Unit, University Department of Surgery , Royal Free London NHS Foundation Trust and University College London , London , UK
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Management consensus guideline for hepatocellular carcinoma: 2016 updated by the Taiwan Liver Cancer Association and the Gastroenterological Society of Taiwan. J Formos Med Assoc 2017; 117:381-403. [PMID: 29074347 DOI: 10.1016/j.jfma.2017.09.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/16/2017] [Accepted: 09/13/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related mortality in Taiwan. To help clinical physicians to manage patients with HCC, the Taiwan Liver Cancer Association and the Gastroenterological Society of Taiwan produced the management consensus guideline for HCC. METHODS The recommendations focus on nine important issues on management of HCC, including surveillance, diagnosis, staging, surgery, local ablation, transarterial chemoembolization/transarterial radioembolization/hepatic arterial infusion chemotherapy, systemic therapy, radiotherapy, and prevention. RESULTS The consensus statements were discussed, debated and got consensus in each expert team. And then the statements were sent to all of the experts for further discussion and refinement. Finally, all of the experts were invited to vote for the statements, including the level of evidence and recommendation. CONCLUSION With the development of the management consensus guideline, HCC patients could benefit from the optimal therapeutic modality.
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Ziv O, Goldberg SN, Nissenbaum Y, Sosna J, Weiss N, Azhari H. Optical flow and image segmentation analysis for noninvasive precise mapping of microwave thermal ablation in X-ray CT scans - ex vivo study. Int J Hyperthermia 2017; 34:744-755. [PMID: 28866952 DOI: 10.1080/02656736.2017.1375160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
PURPOSE To develop image processing algorithms for noninvasive mapping of microwave thermal ablation using X-ray CT. METHODS Ten specimens of bovine liver were subjected to microwave ablation (20-80 W, 8 min) while scanned by X-ray CT at 5 s intervals. Specimens were cut and manually traced by two observers. Two algorithms were developed and implemented to map the ablation zone. The first algorithm utilises images segmentation of Hounsfield units changes (ISHU). The second algorithm utilises radial optical flow (ROF). Algorithm sensitivity to spatiotemporal under-sampling was assessed by decreasing the acquisition rate and reducing the number of acquired projections used for image reconstruction in order to evaluate the feasibility of implementing radiation reduction techniques. RESULTS The average radial discrepancy between the ISHU and ROF contours and the manual tracing were 1.04±0.74 and 1.16±0.79mm, respectively. When diluting the input data, the ISHU algorithm retained its accuracy, ranging from 1.04 to 1.79mm. By contrast, the ROF algorithm performance became inconsistent at low acquisition rates. Both algorithms were not sensitive to projections reduction, (ISHU: 1.24±0.83mm, ROF: 1.53±1.15mm, for reduction by eight fold). Ablations near large blood vessels affected the ROF algorithm performance (1.83±1.30mm; p < 0.01), whereas ISHU performance remained the same. CONCLUSION The two suggested noninvasive ablation mapping algorithms can provide highly accurate contouring of the ablation zone at low scan rates. The ISHU algorithm may be more suitable for clinical practice as it appears more robust when radiation dose reduction strategies are employed and when the ablation zone is near large blood vessels.
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Affiliation(s)
- Omri Ziv
- a Department of Biomedical Engineering , Technion - IIT , Haifa , Israel
| | - S Nahum Goldberg
- b Department of Radiology , Hadassah Medical Center, Hebrew University , Jerusalem , Israel.,c Department of Radiology , Beth Israel Deaconess Medical Center , Boston , MA , USA
| | - Yitzhak Nissenbaum
- b Department of Radiology , Hadassah Medical Center, Hebrew University , Jerusalem , Israel
| | - Jacob Sosna
- b Department of Radiology , Hadassah Medical Center, Hebrew University , Jerusalem , Israel.,c Department of Radiology , Beth Israel Deaconess Medical Center , Boston , MA , USA
| | - Noam Weiss
- a Department of Biomedical Engineering , Technion - IIT , Haifa , Israel
| | - Haim Azhari
- a Department of Biomedical Engineering , Technion - IIT , Haifa , Israel
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Irreversible electroporation and thermal ablation of tumors in the liver, lung, kidney and bone: What are the differences? Diagn Interv Imaging 2017; 98:609-617. [DOI: 10.1016/j.diii.2017.07.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/20/2017] [Indexed: 12/18/2022]
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Yang T, Case JB, Boston S, Dark MJ, Toskich B. Microwave ablation for treatment of hepatic neoplasia in five dogs. J Am Vet Med Assoc 2017; 250:79-85. [PMID: 28001112 DOI: 10.2460/javma.250.1.79] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
CASE DESCRIPTION 5 dogs between 9 and 11 years of age were evaluated for treatment of primary (n = 2) or metastatic (3) hepatic neoplasia. CLINICAL FINDINGS Patients were evaluated on an elective (n = 3) or emergency (2) basis. Two dogs with primary hepatic neoplasia were evaluated because of lethargy and inappetence. One dog was referred after an enlarged anal sac was detected via palpation per rectum during a routine physical examination. Two dogs were evaluated on an emergency basis because of lethargy and weakness, and hemoabdomen in the absence of a history of trauma was detected. All 5 dogs underwent thoracic radiography and abdominal ultrasonography, with CT performed in both dogs with primary hepatic neoplasia. All dogs had preoperative evidence of abdominal neoplasia, and none had evidence of thoracic metastasis. TREATMENT AND OUTCOME All dogs underwent ventral midline laparotomy and had diffuse hepatic neoplasia that precluded complete resection. Locoregional treatment with MWA was applied to hepatic lesions (0.5 to 2.5 cm diameter) without procedural complications. Histopathologic diagnoses were biliary adenocarcinoma (n = 1), hemangiosarcoma (2), hepatocellular carcinoma (1), and apocrine gland adenocarcinoma (1). CLINICAL RELEVANCE MWA is being increasingly used as an adjunct in the surgical treatment of human patients with primary and metastatic liver disease. Results of the present small case series suggested that MWA is feasible and potentially effective as an adjunctive treatment for appropriately selected dogs with nonresectable hepatic tumors. Further investigation is indicated.
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81
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Microwave Ablation of the Lung in a Porcine Model: Vessel Diameter Predicts Pulmonary Artery Occlusion. Cardiovasc Intervent Radiol 2017; 40:1609-1616. [DOI: 10.1007/s00270-017-1689-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 05/03/2017] [Indexed: 02/06/2023]
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82
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Dodd GD, Lanctot AC, Lind KE. Effect of Change in Portal Vein Flow Rates on Hepatic Ablations Created with a Bipolar Radiofrequency Ablation Device. Radiology 2017; 283:399-407. [DOI: 10.1148/radiol.2016152562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Gerald D. Dodd
- From the Department of Radiology, School of Medicine, University of Colorado, Mail Stop L954, 12401 E 17th Ave, PO Box 6510, Aurora, CO 80045
| | - Anthony C. Lanctot
- From the Department of Radiology, School of Medicine, University of Colorado, Mail Stop L954, 12401 E 17th Ave, PO Box 6510, Aurora, CO 80045
| | - Kimberly E. Lind
- From the Department of Radiology, School of Medicine, University of Colorado, Mail Stop L954, 12401 E 17th Ave, PO Box 6510, Aurora, CO 80045
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83
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Chiang J, Nickel K, Kimple RJ, Brace CL. Potential Mechanisms of Vascular Thrombosis after Microwave Ablation in an in Vivo Liver. J Vasc Interv Radiol 2017; 28:1053-1058. [PMID: 28456355 DOI: 10.1016/j.jvir.2017.03.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 02/24/2017] [Accepted: 03/25/2017] [Indexed: 12/21/2022] Open
Abstract
PURPOSE To evaluate potential biologic and thermal mechanisms of the observed differences in thrombosis rates between hepatic vessels during microwave (MW) ablation procedures. MATERIALS AND METHODS MW ablation antennae were placed in single liver lobes of 2 in vivo porcine liver models (n = 3 in each animal; N = 6 total) in the proximity of a large (> 5 mm) portal vein (PV) and hepatic veins (HVs). Each ablation was performed with 100 W for 5 minutes. Conventional ultrasound imaging and intravascular temperature probes were used to evaluate vessel patency and temperature changes during the ablation procedure. Vascular endothelium was harvested 1 hour after ablation and used to characterize genes and proteins associated with thrombosis in PVs and HVs. RESULTS Targeted PVs within the MW ablation zone exhibited thrombosis at a significantly higher rate than HVs (54.5% vs 0.0%; P = .0046). There was a negligible change in intravascular temperature in PVs and HVs during the ablation procedure (0.2°C ± 0.4 vs 0.6°C ± 0.9; P = .46). PVs exhibited significantly higher gene expression than HVs in terms of fold differences in thrombomodulin (2.9 ± 2.0; P = .0001), von Willebrand factor (vWF; 7.6 ± 1.5; P = .0001), endothelial protein C receptor (3.50 ± 0.49; P = .0011), and plasminogen activator inhibitor (1.46 ± 0.05; P = .0014). Western blot analysis showed significantly higher expression of vWF (2.32 ± 0.92; P = .031) in PVs compared with HVs. CONCLUSIONS Large PVs exhibit thrombosis more frequently than HVs during MW ablation procedures. Biologic differences in thrombogenicity, rather than heat transfer, between PVs and HVs may contribute to their different rates of thrombosis.
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Affiliation(s)
- Jason Chiang
- Department of Radiology, University of Wisconsin, 1111 Highland Ave., 1310-O, Madison, WI 53705.
| | - Kwang Nickel
- Department of Radiation Oncology, University of Wisconsin, 1111 Highland Ave., 1310-O, Madison, WI 53705
| | - Randall J Kimple
- Department of Radiation Oncology, University of Wisconsin, 1111 Highland Ave., 1310-O, Madison, WI 53705
| | - Christopher L Brace
- Department of Radiology, University of Wisconsin, 1111 Highland Ave., 1310-O, Madison, WI 53705
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84
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Yue WW, Wang SR, Lu F, Sun LP, Guo LH, Zhang YL, Li XL, Xu HX. Radiofrequency ablation vs. microwave ablation for patients with benign thyroid nodules: a propensity score matching study. Endocrine 2017; 55:485-495. [PMID: 27905049 DOI: 10.1007/s12020-016-1173-5] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 11/05/2016] [Indexed: 12/18/2022]
Abstract
PURPOSE To compare the efficacy and the safety of radiofrequency ablation and microwave ablation for treatment of benign thyroid nodules using a propensity score matching study design. METHODS Two hundred and sixty patients with benign thyroid nodules were studied retrospectively, including 102 patients treated with radiofrequency ablation and 158 treated with microwave ablation. To reduce confounding bias due to retrospective assignment, propensity score matching was performed to balance the preablation data of the two groups. After matching, a total of 102 patient pairs (1:1) were created. The volume reduction ratio, therapeutic success rate, symptom and cosmetic score, and major complication were compared between the two groups at 1, 3, 6, and 12 months after treatment. RESULTS Between the well-matched groups, no significant differences were found in all nodule volume-related end points at 6 months (volume reduction ratio: 79.4 vs. 77.2 %, P = 0.108; symptom score: 2.1 vs. 1.9, P = 0.456; cosmetic score: 2.1 vs. 2.3, P = 0.119; therapeutic success rate: 99 vs. 97 %, P = 0.621) and 12 months (volume reduction ratio: 83.6 vs. 81.6 %, P = 0.144; symptom score: 1.5 vs. 1.5, P = 0.869; cosmetic score: 1.6 vs. 1.7, P = 0.409; therapeutic success rate: 100 vs. 100 %, P > 0.99) after treatment. No major complications occurred in either group (P > 0.99). CONCLUSIONS With well-matched groups and consistent procedure design, our results demonstrated that the volume reduction ratio, therapeutic success rate, symptom and cosmetic score, and complications related to treatment for the two techniques are equivalent. Radiofrequency ablation and microwave ablation are both effective and safe methods in treating benign thyroid nodules.
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Affiliation(s)
- Wen-Wen Yue
- Department of Medical Ultrasound, Tenth People's Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Department of Medical Ultrasound, Yantai Affiliated Hospital, Binzhou Medical University, Yantai, Shandong, 264100, China
- Thyroid Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Shanghai Center for Thyroid Diseases, Shanghai, 200072, China
| | - Shu-Rong Wang
- Department of Medical Ultrasound, Yantai Affiliated Hospital, Binzhou Medical University, Yantai, Shandong, 264100, China.
| | - Feng Lu
- Department of Medical Ultrasound, Tenth People's Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Thyroid Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Shanghai Center for Thyroid Diseases, Shanghai, 200072, China
| | - Li-Ping Sun
- Department of Medical Ultrasound, Tenth People's Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Thyroid Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Shanghai Center for Thyroid Diseases, Shanghai, 200072, China
| | - Le-Hang Guo
- Department of Medical Ultrasound, Tenth People's Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Thyroid Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Shanghai Center for Thyroid Diseases, Shanghai, 200072, China
| | - Yong-Lin Zhang
- Department of Medical Ultrasound, Yantai Affiliated Hospital, Binzhou Medical University, Yantai, Shandong, 264100, China
| | - Xiao-Long Li
- Department of Medical Ultrasound, Tenth People's Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Thyroid Institute, Tongji University School of Medicine, Shanghai, 200072, China
- Shanghai Center for Thyroid Diseases, Shanghai, 200072, China
| | - Hui-Xiong Xu
- Department of Medical Ultrasound, Tenth People's Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, 200072, China.
- Thyroid Institute, Tongji University School of Medicine, Shanghai, 200072, China.
- Shanghai Center for Thyroid Diseases, Shanghai, 200072, China.
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Lucchina N, Tsetis D, Ierardi AM, Giorlando F, Macchi E, Kehagias E, Duka E, Fontana F, Livraghi L, Carrafiello G. Current role of microwave ablation in the treatment of small hepatocellular carcinomas. Ann Gastroenterol 2016; 29:460-465. [PMID: 27708511 PMCID: PMC5049552 DOI: 10.20524/aog.2016.0066] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/29/2016] [Indexed: 12/11/2022] Open
Abstract
Percutaneous radiofrequency ablation (RFA) can be as effective as surgical resection in terms of overall survival and recurrence-free survival rates in patients with small hepatocellular carcinoma (HCC). Effectiveness of RFA is adversely influenced by heat-sink effect. Other ablative therapies could be considered for larger tumors or for tumors located near the vessels. In this regard, recent improvements in microwave energy delivery systems seem to open interesting perspectives to percutaneous ablation, which could become the ablation technique of choice in the near future. Microwave ablation (MWA) has the advantages of possessing a higher thermal efficiency. It has high efficacy in coagulating blood vessels and is a relatively fast procedure. The time required for ablation is short and the shape of necrosis is elliptical with the older systems and spherical with the new one. There is no heat-sink effect and it can be used to ablate tumors adjacent to major vessels. These factors yield a large ablation volume, and result in good local control and fewer complications. This review highlights the most relevant updates on MWA in the treatment of small (<3 cm) HCC. Furthermore, we discuss the possibility of MWA as the first ablative choice, at least in selected cases.
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Affiliation(s)
- Natalie Lucchina
- Department of Radiology Insubria University, Varese, Italy (Natalie Lucchina, Anna Maria Ierardi, Francesca Giorlando, Edoardo Macchi, Ejona Duka, Federico Fontana), University of Milan, Italy
| | - Dimitrios Tsetis
- Department of Radiology, University Hospital of Heraklion, Crete, Greece (Dimitrios Tsetis, Elias Kehagias), University of Milan, Italy
| | - Anna Maria Ierardi
- Department of Radiology Insubria University, Varese, Italy (Natalie Lucchina, Anna Maria Ierardi, Francesca Giorlando, Edoardo Macchi, Ejona Duka, Federico Fontana), University of Milan, Italy
| | - Francesca Giorlando
- Department of Radiology Insubria University, Varese, Italy (Natalie Lucchina, Anna Maria Ierardi, Francesca Giorlando, Edoardo Macchi, Ejona Duka, Federico Fontana), University of Milan, Italy
| | - Edoardo Macchi
- Department of Radiology Insubria University, Varese, Italy (Natalie Lucchina, Anna Maria Ierardi, Francesca Giorlando, Edoardo Macchi, Ejona Duka, Federico Fontana), University of Milan, Italy
| | - Elias Kehagias
- Department of Radiology, University Hospital of Heraklion, Crete, Greece (Dimitrios Tsetis, Elias Kehagias), University of Milan, Italy
| | - Ejona Duka
- Department of Radiology Insubria University, Varese, Italy (Natalie Lucchina, Anna Maria Ierardi, Francesca Giorlando, Edoardo Macchi, Ejona Duka, Federico Fontana), University of Milan, Italy
| | - Federico Fontana
- Department of Radiology Insubria University, Varese, Italy (Natalie Lucchina, Anna Maria Ierardi, Francesca Giorlando, Edoardo Macchi, Ejona Duka, Federico Fontana), University of Milan, Italy
| | - Lorenzo Livraghi
- Department of Surgical Sciences, University of Insubria, Varese, Italy (Lorenzo Livraghi), University of Milan, Italy
| | - Gianpaolo Carrafiello
- Department of Diagnostic and Interventional Radiology, San Paolo Hospital, Department of Health Sciences, University of Milan, Italy
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Månsson C, Brahmstaedt R, Nilsson A, Nygren P, Karlson BM. Percutaneous irreversible electroporation for treatment of locally advanced pancreatic cancer following chemotherapy or radiochemotherapy. Eur J Surg Oncol 2016; 42:1401-6. [DOI: 10.1016/j.ejso.2016.01.024] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/15/2016] [Accepted: 01/26/2016] [Indexed: 12/22/2022] Open
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87
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Shyn PB, Bird JR, Koch RM, Tatli S, Levesque VM, Catalano PJ, Silverman SG. Hepatic Microwave Ablation Zone Size: Correlation with Total Energy, Net Energy, and Manufacturer-Provided Chart Predictions. J Vasc Interv Radiol 2016; 27:1389-1396. [DOI: 10.1016/j.jvir.2016.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/30/2016] [Accepted: 05/09/2016] [Indexed: 02/08/2023] Open
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88
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Al-Hakim RA, Abtin FG, Genshaft SJ, Kutay E, Suh RD. Defining New Metrics in Microwave Ablation of Pulmonary Tumors: Ablation Work and Ablation Resistance Score. J Vasc Interv Radiol 2016; 27:1380-1386. [DOI: 10.1016/j.jvir.2016.05.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 05/20/2016] [Accepted: 05/21/2016] [Indexed: 01/08/2023] Open
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89
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Ryan TP, Brace CL. Interstitial microwave treatment for cancer: historical basis and current techniques in antenna design and performance. Int J Hyperthermia 2016; 33:3-14. [DOI: 10.1080/02656736.2016.1214884] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
| | - Christopher L. Brace
- Departments of Radiology and Biomedical Engineering, University of Wisconsin, Madison, WI, USA
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Bouda D, Lagadec M, Alba CG, Barrau V, Dioguardi Burgio M, Moussa N, Vilgrain V, Ronot M. Imaging review of hepatocellular carcinoma after thermal ablation: The good, the bad, and the ugly. J Magn Reson Imaging 2016; 44:1070-1090. [DOI: 10.1002/jmri.25369] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 06/16/2016] [Indexed: 12/11/2022] Open
Affiliation(s)
- Damien Bouda
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
| | - Matthieu Lagadec
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
| | - Carmela Garcia Alba
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
| | - Vincent Barrau
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
| | - Marco Dioguardi Burgio
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
| | - Nadia Moussa
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
| | - Valérie Vilgrain
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
- University Paris Diderot; Sorbonne Paris Cité, INSERM UMR 1149 Paris France
| | - Maxime Ronot
- Radiology Department; Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP; Clichy France
- University Paris Diderot; Sorbonne Paris Cité, INSERM UMR 1149 Paris France
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91
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Meloni MF, Chiang J, Laeseke PF, Dietrich CF, Sannino A, Solbiati M, Nocerino E, Brace CL, Lee FT. Microwave ablation in primary and secondary liver tumours: technical and clinical approaches. Int J Hyperthermia 2016; 33:15-24. [PMID: 27416729 DOI: 10.1080/02656736.2016.1209694] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Thermal ablation is increasingly being utilised in the treatment of primary and metastatic liver tumours, both as curative therapy and as a bridge to transplantation. Recent advances in high-powered microwave ablation systems have allowed physicians to realise the theoretical heating advantages of microwave energy compared to other ablation modalities. As a result there is a growing body of literature detailing the effects of microwave energy on tissue heating, as well as its effect on clinical outcomes. This article will discuss the relevant physics, review current clinical outcomes and then describe the current techniques used to optimise patient care when using microwave ablation systems.
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Affiliation(s)
- Maria Franca Meloni
- a Department of Radiology , Interventional Ultrasound, Institute of Care IGEA , Milan , Italy
| | - Jason Chiang
- b Department of Radiology , University of Wisconsin , Madison , Wisconsin , USA
| | - Paul F Laeseke
- b Department of Radiology , University of Wisconsin , Madison , Wisconsin , USA
| | - Christoph F Dietrich
- c Department of Internal Medicine , Caritas Krankenhas Bad Mergentheim , Bad Mergentheim , Germany
| | - Angela Sannino
- d Department of Clinical Medicine and Surgery , University of Naples Federico II , Naples , Italy
| | - Marco Solbiati
- e Department of Electronics, Information and Bioengineering , Politecnico Milano , Milan , Italy
| | - Elisabetta Nocerino
- f Department of Radiology , San Paolo Hospital, University of Milan , Milan , Italy
| | - Christopher L Brace
- b Department of Radiology , University of Wisconsin , Madison , Wisconsin , USA
| | - Fred T Lee
- b Department of Radiology , University of Wisconsin , Madison , Wisconsin , USA
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Wu ZB, Si ZM, Qian S, Liu LX, Qu XD, Zhou B, Zhang W, Wang GZ, Liu R, Wang JH. Percutaneous microwave ablation combined with synchronous transcatheter arterial chemoembolization for the treatment of colorectal liver metastases: results from a follow-up cohort. Onco Targets Ther 2016; 9:3783-9. [PMID: 27382314 PMCID: PMC4922761 DOI: 10.2147/ott.s105192] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The purpose of this study was to retrospectively evaluate the therapeutic efficacy and safety of ultrasound-guided percutaneous microwave ablation (MWA) combined with synchronous transcatheter arterial chemoembolization (TACE) in patients with colorectal liver metastases (CRLM). PATIENTS AND METHODS A retrospective analysis was performed in 30 patients who were treated with ultrasound-guided percutaneous MWA combined with synchronous TACE for colorectal cancer liver metastases from November 2011 to December 2014 in Zhongshan Hospital, Fudan University. The response of the tumor to treatment was evaluated by follow-up computed tomography and/or magnetic resonance imaging. Local tumor control, procedure-related complications, and long-term survival data were analyzed. RESULTS A total of 30 patients with 43 tumors ranging in size from 1.4 cm to 10.0 cm were analyzed. The patients' mean age was 61.6±10.3 years (range, 44.0-78.0 years). The median follow-up time was 26.5±10.4 months (range, 13.3-50.6 months). The complete ablation rate was 81.4% (35/43 lesions) for CRLM. Complete response was achieved in eight cases (26.7%), and partial response was achieved in 17 cases (56.7%) 1 month after the procedure. The objective response rate (complete response + partial response) was 83.4%. Progression-free survival and overall survival were 5.0 months and 11.0 months, respectively. The 12-month and 24-month survival rates were 46.7% and 25.4%, respectively. A total of 22 patients succumbed during follow-up due to tumor progression. No major complications or perioperative mortalities were recorded. CONCLUSION Ultrasound-guided percutaneous MWA combined with synchronous TACE therapy is a safe and effective modality for patients with CRLM.
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Affiliation(s)
- Zeng-Bao Wu
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Zeng-Mei Si
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Sheng Qian
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Ling-Xiao Liu
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Xu-Dong Qu
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Bo Zhou
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Wei Zhang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Guang-Zhi Wang
- Department of Intervention Radiology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Rong Liu
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Jian-Hua Wang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
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93
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Chiang J, Cristescu M, Lee MH, Moreland A, Hinshaw JL, Lee FT, Brace CL. Effects of Microwave Ablation on Arterial and Venous Vasculature after Treatment of Hepatocellular Carcinoma. Radiology 2016; 281:617-624. [PMID: 27257951 DOI: 10.1148/radiol.2016152508] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Purpose To characterize vessel occlusion rates and their role in local tumor progression in patients with hepatocellular carcinoma (HCC) who underwent microwave tumor ablation. Materials and Methods This institutional review board approved, HIPAA-compliant retrospective review included 95 patients (75 men and 20 women) with 124 primary HCCs who were treated at a single center between January 2011 and March 2014. Complete occlusion of the portal veins, hepatic veins, and hepatic arteries within and directly abutting the ablation zone was identified with postprocedure contrast material-enhanced computed tomography. For each vessel identified in the ablation zone, its size and antenna spacing were recorded and correlated with vascular occlusion with logistic regression analysis. Local tumor progression rates were then compared between patent and occluded vessels for each vessel type with Fisher exact test. Results Occlusion was identified in 39.7% of portal veins (29 of 73), 15.0% of hepatic veins (six of 40), and 14.2% of hepatic arteries (10 of 70) encompassed within the ablation zone. Hepatic vein occlusion was significantly correlated with a smaller vessel size (P = .036) and vessel-antenna spacing (P = .006). Portal vein occlusion was only significantly correlated with a smaller vessel size (P = .001), particularly in vessels that were less than 3 mm in diameter. Local tumor progression rates were significantly correlated with patent hepatic arteries within the ablation zone (P = .02) but not with patent hepatic (P = .57) or portal (P = .14) veins. Conclusion During microwave ablation of HCC, hepatic veins and arteries were resistant to vessel occlusion compared with portal veins, and only arterial patency within an ablation zone was related to local tumor progression. © RSNA, 2016.
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Affiliation(s)
- Jason Chiang
- From the Departments of Radiology (J.C., M.C., M.H.L., A.M., J.L.H., F.T.L., C.L.B.) and Biomedical Engineering (J.C., F.T.L., C.L.B.), University of Wisconsin-Madison, 1111 Highland Ave, WIMR 1310-O, Madison, WI 53705
| | - Mircea Cristescu
- From the Departments of Radiology (J.C., M.C., M.H.L., A.M., J.L.H., F.T.L., C.L.B.) and Biomedical Engineering (J.C., F.T.L., C.L.B.), University of Wisconsin-Madison, 1111 Highland Ave, WIMR 1310-O, Madison, WI 53705
| | - Matthew H Lee
- From the Departments of Radiology (J.C., M.C., M.H.L., A.M., J.L.H., F.T.L., C.L.B.) and Biomedical Engineering (J.C., F.T.L., C.L.B.), University of Wisconsin-Madison, 1111 Highland Ave, WIMR 1310-O, Madison, WI 53705
| | - Anna Moreland
- From the Departments of Radiology (J.C., M.C., M.H.L., A.M., J.L.H., F.T.L., C.L.B.) and Biomedical Engineering (J.C., F.T.L., C.L.B.), University of Wisconsin-Madison, 1111 Highland Ave, WIMR 1310-O, Madison, WI 53705
| | - J Louis Hinshaw
- From the Departments of Radiology (J.C., M.C., M.H.L., A.M., J.L.H., F.T.L., C.L.B.) and Biomedical Engineering (J.C., F.T.L., C.L.B.), University of Wisconsin-Madison, 1111 Highland Ave, WIMR 1310-O, Madison, WI 53705
| | - Fred T Lee
- From the Departments of Radiology (J.C., M.C., M.H.L., A.M., J.L.H., F.T.L., C.L.B.) and Biomedical Engineering (J.C., F.T.L., C.L.B.), University of Wisconsin-Madison, 1111 Highland Ave, WIMR 1310-O, Madison, WI 53705
| | - Christopher L Brace
- From the Departments of Radiology (J.C., M.C., M.H.L., A.M., J.L.H., F.T.L., C.L.B.) and Biomedical Engineering (J.C., F.T.L., C.L.B.), University of Wisconsin-Madison, 1111 Highland Ave, WIMR 1310-O, Madison, WI 53705
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Shi Y, Zhai B. A Recent Advance in Image-Guided Locoregional Therapy for Hepatocellular Carcinoma. Gastrointest Tumors 2016; 3:90-102. [PMID: 27904861 DOI: 10.1159/000445888] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/22/2016] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is the fifth most common cancer worldwide and the third most common cause of cancer-related deaths. Hepatic resection and liver transplantation are considered to be the preferred treatment for HCC. However, as novel therapeutic options such as image-guided locoregional therapies have emerged and been refined, the manner in which HCC is treated has changed dramatically compared with what it was considered just 2 decades earlier. SUMMARY This study reviews the current results of various image-guided locoregional therapies for treating HCC, especially focusing on thermal ablative and transarterial techniques. KEY MESSAGE Advances in image-guided locoregional therapies, including local ablative therapy and transarterial therapy, have led to a major breakthrough in the management of HCC. Both survival rates and cure rates of patients with HCC have improved markedly since the introduction of these techniques. PRACTICAL IMPLICATIONS Radiofrequency ablation is currently considered as an alternative to surgical resection for patients with early-stage HCC. A newer technique of ablation such as microwave ablation is increasingly being used, especially for large HCC. Transarterial chemoembolization has become a standard care for asymptomatic patients with multinodular tumors in intermediate-stage disease, and transarterial radioembolization has become the method of choice in HCC cases with portal vein thrombosis. Moreover, combination treatment modalities, such as thermal-based ablation combined with transarterial chemoembolization or 125I seed implant brachytherapy, may further broaden their clinical indications for HCC. Moreover, use of localized radiation in combination with thermal ablation has been reported to improve tumor control and long-term survival.
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Affiliation(s)
- Yaoping Shi
- Department of Interventional Oncology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Bo Zhai
- Department of Interventional Oncology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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95
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She WH, Cheung TT. Bridging and downstaging therapy in patients suffering from hepatocellular carcinoma waiting on the list of liver transplantation. Transl Gastroenterol Hepatol 2016; 1:34. [PMID: 28138601 DOI: 10.21037/tgh.2016.03.04] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 01/04/2016] [Indexed: 12/12/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a common primary malignancy worldwide especially in the patients with the background of chronic liver disease. Liver transplantation (LT) is the only curative treatment effective for both malignancy as well as the cirrhosis and portal hypertension. Unfortunately, living donor is not always possible and the deceased graft is scarce. Neoadjuvant therapies, therefore, have been developed as a downstaging treatment to try to downstage the tumor within the transplant criteria, or as a bridging therapy to control the tumor growth in patients while waiting in the transplant list. This paper reviewed the common modalities used as bridging and downstaging therapies for patients suffering from HCC before undergoing LT.
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Affiliation(s)
- Wong Hoi She
- Division of Hepatobiliary and Pancreatic Surgery and Liver Transplantation, Department of Surgery, the University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Tan To Cheung
- Division of Hepatobiliary and Pancreatic Surgery and Liver Transplantation, Department of Surgery, the University of Hong Kong, Queen Mary Hospital, Hong Kong
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96
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Singh S, Siriwardana PN, Johnston EW, Bandula S, Davidson BR, Illing RO. Perivascular parenchymal extension of the ablation zone following liver microwave ablation. BMJ Case Rep 2016; 2016:bcr-2015-212871. [PMID: 27033281 DOI: 10.1136/bcr-2015-212871] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
A 69-year-old man who presented with abdominal discomfort was, on examination, found to have a palpable abdominal mass. Contrast-enhanced CT showed a mass arising from the inferior vena cava, which biopsy confirmed to be a leiomyosarcoma. One month after chemoradiotherapy, CT demonstrated a new 15 mm solitary central right liver metastasis. Microwave ablation (MWA) of the metastasis was performed using an Acculis Sulis V system (Angiodynamics, USA) at a power of 140 Watts for 4 min, with no immediate complications. After 1 month, MRI with gadolinium was performed to assess the liver ablation zone. The MRI demonstrated thrombosis of a right inferior hepatic vein branch leading to the ablation zone and extension of the ablation zone 1 cm into the tissue around the thrombosed vessel.
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Affiliation(s)
- Saurabh Singh
- Interventional Oncology Service, University College Hospital, University College London, London, UK
| | - Pulathis Nilantha Siriwardana
- Hepatopancreatobiliary and Liver Transplant Surgery Unit, Royal Free Hospital, University College London, London, UK
| | - Edward William Johnston
- Interventional Oncology Service, University College Hospital, University College London, London, UK
| | - Steven Bandula
- Interventional Oncology Service, University College Hospital, University College London, London, UK
| | - Brian Ritchie Davidson
- Hepatopancreatobiliary and Liver Transplant Surgery Unit, Royal Free Hospital, University College London, London, UK
| | - Rowland Oliver Illing
- Interventional Oncology Service, University College Hospital, University College London, London, UK
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97
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Deshazer G, Merck D, Hagmann M, Dupuy DE, Prakash P. Physical modeling of microwave ablation zone clinical margin variance. Med Phys 2016; 43:1764. [DOI: 10.1118/1.4942980] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Abstract
Minimally invasive surgery has been cautiously introduced in surgical oncology over the last two decades due to a concern of compromised oncological outcomes. Recently, it has been adopted in liver surgery for colorectal metastases. Colorectal cancer is a major cause of cancer-related death in the USA. In addition, liver metastasis is the most common site of distant disease and its resection improves survival. While open resection was the standard of care, laparoscopic liver surgery has become the standard of care for minor liver resections. Laparoscopic liver surgery provides equivalent oncological outcomes with better perioperative results compared to open liver surgery. Robotic liver surgery has been introduced as it is believed to overcome some of the limitations of laparoscopy. Finally, laparoscopic radio-frequency ablation and microwave coagulation can be used as adjuncts in minimally invasive surgery to complement or replace surgical resection when not possible.
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99
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Cheng M, Fay M, Steinke K. Percutaneous CT-guided thermal ablation as salvage therapy for recurrent non-small cell lung cancer after external beam radiotherapy: A retrospective study. Int J Hyperthermia 2016; 32:316-23. [DOI: 10.3109/02656736.2015.1137640] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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100
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CT Appearance of Hepatocellular Carcinoma after Locoregional Treatments: A Comprehensive Review. Gastroenterol Res Pract 2015; 2015:670965. [PMID: 26798332 PMCID: PMC4700180 DOI: 10.1155/2015/670965] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/09/2015] [Accepted: 09/14/2015] [Indexed: 02/08/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a major health problem worldwide, affecting more than 600,000 new patients per year. Curative treatments are available in a small percentage of patients, while most of them present in stages requiring locoregional treatments such as thermoablation, transarterial chemoembolization, and/or radioembolization. These therapies
result in specific imaging features that the general radiologist has to be aware of in order to assess the response to treatment and to correctly manage the follow-up of treated patients. Multiphasic helical computed tomography has become a popular imaging modality for detecting hypervascular tumors and characterizing liver lesions. On this basis, many staging and diagnostic systems have been proposed for evaluating response to all different existing strategies. Radiofrequencies and microwaves generate thermoablation of tumors, and transarterial chemoembolization exploits the double effect of the locoregional administration of drugs and embolizing particles. Eventually radioembolization uses a beta-emitting isotope to induce necrosis. Therefore, the aim of this comprehensive review is to analyze and compare CT imaging appearance of HCC after various locoregional treatments, with regard to specific indications for all possible procedures.
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