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Campbell WA, Makary MS. Advances in Image-Guided Ablation Therapies for Solid Tumors. Cancers (Basel) 2024; 16:2560. [PMID: 39061199 PMCID: PMC11274819 DOI: 10.3390/cancers16142560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 06/26/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
Image-guided solid tumor ablation methods have significantly advanced in their capability to target primary and metastatic tumors. These techniques involve noninvasive or percutaneous insertion of applicators to induce thermal, electrochemical, or mechanical stress on malignant tissue to cause tissue destruction and apoptosis of the tumor margins. Ablation offers substantially lower risks compared to traditional methods. Benefits include shorter recovery periods, reduced bleeding, and greater preservation of organ parenchyma compared to surgical intervention. Due to the reduced morbidity and mortality, image-guided tumor ablation offers new opportunities for treatment in cancer patients who are not candidates for resection. Currently, image-guided ablation techniques are utilized for treating primary and metastatic tumors in various organs with both curative and palliative intent, including the liver, pancreas, kidneys, thyroid, parathyroid, prostate, lung, breast, bone, and soft tissue. The invention of new equipment and techniques is expanding the criteria of eligible patients for therapy, as now larger and more high-risk tumors near critical structures can be ablated. This article provides an overview of the different imaging modalities, noninvasive, and percutaneous ablation techniques available and discusses their applications and associated complications across various organs.
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Affiliation(s)
- Warren A. Campbell
- Division of Vascular and Interventional Radiology, Department of Radiology, University of Virginia, Charlottesville, VA 22903, USA
| | - Mina S. Makary
- Division of Vascular and Interventional Radiology, Department of Radiology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
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D'Souza DL, Ragulojan R, Guo C, Dale CM, Jones CJ, Talaie R. Thermal Ablation in the Liver: Heat versus Cold-What Is the Role of Cryoablation? Semin Intervent Radiol 2023; 40:491-496. [PMID: 38274220 PMCID: PMC10807970 DOI: 10.1055/s-0043-1777845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Cryoablation is commonly used in the kidney, lung, breast, and soft tissue, but is an uncommon choice in the liver where radiofrequency ablation (RFA) and microwave ablation (MWA) predominate. This is in part for historical reasons due to serious complications that occurred with open hepatic cryoablation using early technology. More current technology combined with image-guided percutaneous approaches has ameliorated these issues and allowed cryoablation to become a safe and effective thermal ablation modality for treating liver tumors. Cryoablation has several advantages over RFA and MWA including the ability to visualize the ice ball, minimal procedural pain, and strong immunomodulatory effects. This article will review the current literature on cryoablation of primary and secondary liver tumors, with a focus on efficacy, safety, and immunogenic potential. Clinical scenarios when it may be more beneficial to use cryoablation over heat-based ablation in the liver, as well as directions for future research, will also be discussed.
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Affiliation(s)
- Donna L. D'Souza
- Division of Interventional Radiology, Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Ranjan Ragulojan
- Division of Interventional Radiology, Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Chunxiao Guo
- Division of Interventional Radiology, Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Connie M. Dale
- Division of Interventional Radiology, Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Christopher J. Jones
- Division of Interventional Radiology, Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - Reza Talaie
- Division of Interventional Radiology, Department of Radiology, University of Minnesota, Minneapolis, Minnesota
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Koza A, Bhogal RH, Fotiadis N, Mavroeidis VK. The Role of Ablative Techniques in the Management of Hepatocellular Carcinoma: Indications and Outcomes. Biomedicines 2023; 11:biomedicines11041062. [PMID: 37189680 DOI: 10.3390/biomedicines11041062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/18/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
The management of hepatocellular carcinoma (HCC) remains complex and will continue to rely on the multidisciplinary input of hepatologists, surgeons, radiologists, oncologists and radiotherapists. With the appropriate staging of patients and selection of suitable treatments, the outcomes for HCC are improving. Surgical treatments encompassing both liver resection and orthotopic liver transplantation (OLT) are the definitive curative-intent options. However, patient suitability, as well as organ availability, pose essential limitations. Consequently, non-surgical options, such as ablative techniques, play an increasingly important role, especially in small HCCs, where overall and disease-free survival can be comparable to surgical resection. Ablative techniques are globally recommended in recognised classification systems, showing increasingly promising results. Recent technical refinements, as well as the emerging use of robotic assistance, may expand the treatment paradigm to achieve improved oncological results. At present, in very early stage and early stage unresectable disease, percutaneous thermal ablation is considered the treatment of choice. Owing to their different features, various ablative techniques, including radiofrequency ablation, microwave ablation, cryotherapy ablation and irreversible electroporation, have been shown to confer different comparative advantages and applicability. We herein review the role of available ablative techniques in the current complex multidisciplinary management of HCC, with a main focus on the indications and outcomes, and discuss future perspectives.
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Chen Z, Meng L, Zhang J, Zhang X. Progress in the cryoablation and cryoimmunotherapy for tumor. Front Immunol 2023; 14:1094009. [PMID: 36761748 PMCID: PMC9907027 DOI: 10.3389/fimmu.2023.1094009] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023] Open
Abstract
With the rapid advancement of imaging equipment and minimally invasive technology, cryoablation technology is being used more frequently in minimally invasive treatment of tumors, primarily for patients with early tumors who voluntarily consent to ablation as well as those with advanced tumors that cannot be surgically removed or cannot be tolerated. Cryoablation is more effective and secure for target lesions than other thermal ablation methods like microwave and radiofrequency ablation (RFA). The study also discovered that cryoablation, in addition to causing tumor tissue necrosis and apoptosis, can facilitate the release of tumor-derived autoantigens into the bloodstream and activate the host immune system to elicit beneficial anti-tumor immunological responses against primary. This may result in regression of the primary tumor and distant metastasis. The additional effect called " Accompanying effects ". It is the basis of combined ablation and immunotherapy for tumor. At present, there is a lot of research on the mechanism of immune response induced by cryoablation. Trying to solve the question: how positively induce immune response. In this review, we focus on: 1. the immune effects induced by cryoablation. 2. the effect and mechanism of tumor immunotherapy combined with cryoablation. 3.The clinical research of this combination therapy in the treatment of tumors.
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Affiliation(s)
- Zenan Chen
- Department of Radiology, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Liangliang Meng
- Department of Radiology, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China.,Department of Radiology, Chinese People's Armed Police (PAP) Force Hospital of Beijing, Beijing, China
| | - Jing Zhang
- Department of Radiology, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Xiao Zhang
- Department of Radiology, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
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Daye D, Hu EY, Glazer DI, Tuncali K, Levesque V, Shyn PB. Periprocedural factors associated with overall patient survival following percutaneous image-guided liver tumor cryoablation. Int J Hyperthermia 2021; 39:34-39. [PMID: 34937523 DOI: 10.1080/02656736.2021.2013552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
PURPOSE To assess the impact of periprocedural factors, including adverse events, on overall patient survival following image-guided liver tumor cryoablation procedures. METHODS In this retrospective single-institution study, 143 patients (73 male, 70 female, ages 29-88) underwent 169 image-guided liver tumor cryoablation procedures between October 1998 and August 2014. Patient, tumor and procedural variables were recorded. The primary outcome was overall survival post-procedure (Kaplan-Meier analysis). Secondary outcomes were the impact of 15 variables on patient survival, which were assessed with multivariate cox regression and log-rank tests. RESULTS Mean tumor diameter was 2.5 ± 1.2 cm. 26 of 143 (18.2%) patients had primary hepatic malignancies; 117 of 143 (81.8%) had liver metastases. Survival analysis revealed survivor functions at 3, 5, 7, 10 and 12 years post-ablation of 0.54, 0.37, 0.30, 0.17 and 0.06, with mean survival time of 40.8 ± 4.9 months. Tumor size ≥4 cm (p = .018), pre-procedural platelet count <100 × 103/μL (p = .023), and prior local radiation therapy (p = .014) were associated with worse overall patient survival. Grade 3 or higher adverse events were not associated with reduced survival (p = .49). CONCLUSIONS All variables associated with overall survival were patient-related and none were associated with the cryoablation procedure. Pre-procedural thrombocytopenia, larger tumor size and history of prior local radiation therapy were independent risk factors for reduced overall survival in patients undergoing hepatic cryoablation. Adverse events related to hepatic cryoablation were not associated with decreased survival.
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Affiliation(s)
- Dania Daye
- Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Boston, MA, USA
| | - Emmy Y Hu
- Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Boston, MA, USA
| | - Daniel I Glazer
- Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Kemal Tuncali
- Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Vincent Levesque
- Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Boston, MA, USA
| | - Paul B Shyn
- Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
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Ko SE, Lee MW, Rhim H, Kang TW, Song KD, Cha DI, Lim HK. Comparison of procedure-related complications between percutaneous cryoablation and radiofrequency ablation for treating periductal hepatocellular carcinoma. Int J Hyperthermia 2021; 37:1354-1361. [PMID: 33297809 DOI: 10.1080/02656736.2020.1849824] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
PURPOSE This study aimed to evaluate the incidence and severity of biliary complications after treating periductal hepatocellular carcinomas (HCCs) using either cryoablation (CA) or radiofrequency ablation (RFA) and assess independent risk factors for biliary complications after treatment. MATERIALS AND METHODS Between July 2008 and August 2018, 949 patients with treatment-naïve HCCs underwent either RFA or CA in our institution. Of these, patients with multiple HCCs, tumors equal to or larger than 3 cm or smaller than 1 cm, and tumors with non-periductal locations were excluded. Finally, 31 patients and 25 patients were included in the RFA group and the CA group, respectively. The incidence and severity of biliary complications were compared between the RFA and CA groups. The risk factors for biliary complications were assessed using univariable and multivariable logistic regression analyses using the following variables: age, sex, tumor size, Child-Pugh score, tumor location (peripheral duct versus central duct), ablation method (RFA versus CA), the number of applicators, ablation time, and ablation volume. RESULTS The incidence and severity of biliary complications were significantly higher in the RFA group than in the CA group (p = 0.007 and p = 0.002, respectively). In univariable and multivariable analyses, the ablation method was an independent risk factor for biliary complications (p = 0.004 and 0.013, respectively). CONCLUSIONS The incidence and severity of biliary complications after treating HCCs abutting the bile duct are lower in CA than RFA, demonstrating that CA is safer than RFA for ablating small periductal HCCs.
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Affiliation(s)
- Seong Eun Ko
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Min Woo Lee
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Hyunchul Rhim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Tae Wook Kang
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Kyoung Doo Song
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Dong Ik Cha
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hyo Keun Lim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
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Advanced Techniques in the Percutaneous Ablation of Liver Tumours. Diagnostics (Basel) 2021; 11:diagnostics11040585. [PMID: 33805107 PMCID: PMC8064108 DOI: 10.3390/diagnostics11040585] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/20/2021] [Accepted: 03/21/2021] [Indexed: 02/07/2023] Open
Abstract
Percutaneous ablation is an accepted treatment modality for primary hepatocellular carcinoma (HCC) and liver metastases. The goal of curative ablation is to cause the necrosis of all tumour cells with an adequate margin, akin to surgical resection, while minimising local damage to non-target tissue. Aside from the ablative modality, the proceduralist must decide the most appropriate imaging modality for visualising the tumour and monitoring the ablation zone. The proceduralist may also employ protective measures to minimise injury to non-target organs. This review article discusses the important considerations an interventionalist needs to consider when performing the percutaneous ablation of liver tumours. It covers the different ablative modalities, image guidance, and protective techniques, with an emphasis on new and advanced ablative modalities and adjunctive techniques to optimise results and achieve satisfactory ablation margins.
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Wang F, Ma J, Wu L, Li N, Luo R, Wei G, Yang J. Percutaneous cryoablation of subcapsular hepatocellular carcinoma: a retrospective study of 57 cases. ACTA ACUST UNITED AC 2020; 26:34-39. [PMID: 31650975 DOI: 10.5152/dir.2019.18543] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE This study aims to evaluate the safety and effectiveness of the percutaneous cryoablation for subcapsular hepatocellular carcinoma (HCC). METHODS A total of 57 patients with subcapsular (<1 cm form the liver edge) HCCs (68 lesions), who were treated with CT-guided percutaneous cryoablation in the Department of Interventional Radiology of our hospital between July 1, 2016 and September 1, 2018, were retrospectively included. Complete ablation rate, local tumor progression (LTP) and treatment-related complications were evaluated. Furthermore, the degree of intraoperative and postoperative pain was measured with the visual analog scale (VAS), and laboratory findings were compared before and after the procedure. RESULTS All patients successfully completed the treatment. The mean follow-up period was 12.8 months (range, 3-27 months), and the complete ablation rate was 97% (66/68). Local tumor progression occurred in 11 lesions (16.2%), and the 6-, 12- and 18-month cumulative LTP rates were 4.0%, 8.2% and 20.5%, respectively. Two patients (3.5%, 2/57) developed major complications, and 12 patients had minor complications (22.8%, 12/57). The mean VAS score during the operation was 1.65 points (range, 1-3 points). Postoperative pain worsened in 3 patients, and the VAS scores reached 4-5. Transient changes in biochemical and hematologic markers were observed. CONCLUSION Percutaneous cryoablation for subcapsular HCC is safe and effective, the procedure is simple and the patients suffer less pain.
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Affiliation(s)
- Fuming Wang
- Department of Interventional Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jianbing Ma
- Department of Radiology, The First Hospital of Jiaxing, Zhejiang, China
| | - Linlin Wu
- Department of Oncology, Tengzhou Central People's Hospital, Shandong, China
| | - Na Li
- Department of Interventional Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Rong Luo
- Department of Interventional Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Guangxu Wei
- Department of Interventional Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jijin Yang
- Department of Interventional Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China
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9
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Critical review of multidisciplinary non-surgical local interventional ablation techniques in primary or secondary liver malignancies. J Contemp Brachytherapy 2019; 11:589-600. [PMID: 31969919 PMCID: PMC6964346 DOI: 10.5114/jcb.2019.90466] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/15/2019] [Indexed: 12/21/2022] Open
Abstract
Local non-surgical interventional percutaneous ablation represents nowadays an important part of the potential treatment strategies. Although surgical ablation represents the gold standard, in the past decade there was an expansion in the use of non-surgical ablative techniques: radiofrequency, microwave, laser, cryoablation, irreversible electroporation, and interventional radiotherapy (brachytherapy) in primary as well as secondary liver cancers. With the growing experience in the field, there was implemented a new pillar for cancer treatment, together with surgery, chemotherapy as well as radiotherapy, so-called interventional oncology (IO). To date, there are no published papers regarding a comparative interdisciplinary evaluation of all these non-surgical interventional local ablation therapies. Our paper offers a critical interdisciplinary overview of the treatments in both primary and secondary liver tumors, including from a cost-effective point of view. Furthermore, the present status of education in IO and a comparison of actual economic aspects of the treatments are also provided.
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Patel V, Ritchie CA, Padula C, McKinney JM. Radiofrequency Ablation, Where It Stands in Interventional Radiology Today. Semin Intervent Radiol 2019; 36:398-404. [PMID: 31798214 PMCID: PMC6887522 DOI: 10.1055/s-0039-1697945] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Radiofrequency ablation (RFA) is one of the first developed minimally invasive definitive cancer therapies. The safety and efficacy of RFA is well documented and has led to its incorporation into multiple international societal guidelines. By expanding on the body of knowledge acquired during the clinical use of RFA, alternative ablative technologies have emerged and are successfully competing for locoregional therapy market share. The adaption of newer ablative technologies is leading to a rapid decline in the utilization of RFA by interventional radiologists despite the lack of proven superiority. In their 2010 article, Hong and Georgiades stated "… RFA is likely to remain the mainstay of ablations for small tumors until sufficient experience emerges for the widespread acceptance for alternative ablative modalities." Within a decade of this publication, has this time arrived?
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Affiliation(s)
| | | | - Carlos Padula
- Department of Radiology, Mayo Clinic, Jacksonville, Florida
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11
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Ma J, Wang F, Zhang W, Wang L, Yang X, Qian Y, Huang J, Wang J, Yang J. Percutaneous cryoablation for the treatment of liver cancer at special sites: an assessment of efficacy and safety. Quant Imaging Med Surg 2019; 9:1948-1957. [PMID: 31929967 DOI: 10.21037/qims.2019.11.12] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background To assess the safety and efficacy of cryoablation (CA) devices for the treatment of liver cancer at special sites in a retrospective study. Methods Special site liver cancer was defined as the tumors directly abutting surrounding structures (such as the liver capsule, gallbladder, vessel, diaphragm, intestine, and adrenal gland) with a maximum distance of 1.0 cm between the tumor and these organs. Sixty-six patients (49 men, 17 women; mean age, 60.8 years; age range, 27-82 years) were included. CA procedure was performed to treat 69 tumors under the guidance of computed tomography or ultrasound. Local tumor progression was assessed during the follow-up. A visual analog scale (VAS) evaluated the pain degree. Complications were assessed during and after every procedure. Results The number of tumors under the liver capsule and adjacent to the gallbladder, portal or hepatic vein, diaphragm, intestine, and adrenal gland were 29, 5, 8, 14, 7, and 6, respectively. The median follow-up time was 14 months (range, 2-28 months). In the 69 procedures, the technical success rate was 100%. The cumulative local tumor progression rates at 6, 9, 15, and 24 months were 10.2%, 16.5%, 20.9%, and 30.5%, respectively. No cases of serious complications occurred. During operation, the occurrence rates of subcapsular hemorrhage and pneumothorax were 2.9% and 1.4%, respectively. After the operation, the occurrence rate of biloma, capsular injury, subcapsular planting metastasis, and pneumothorax were 1.4%, 18.8%, 1.4%, and 2.8%, respectively. The average score of 66 patients with a VAS was 2.15±0.63 during the operation. Conclusions Percutaneous CA is safe and effective for patients with special site liver cancer.
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Affiliation(s)
- Jianbing Ma
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Jiaxing University, Jiaxing 314000, China
| | - Fuming Wang
- Department of Interventional Radiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Weiqiang Zhang
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Jiaxing University, Jiaxing 314000, China
| | - Lizhang Wang
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Jiaxing University, Jiaxing 314000, China
| | - Xiaofeng Yang
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Jiaxing University, Jiaxing 314000, China
| | - Ying Qian
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Jiaxing University, Jiaxing 314000, China
| | - Jianjun Huang
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Jiaxing University, Jiaxing 314000, China
| | - Jia Wang
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Jiaxing University, Jiaxing 314000, China
| | - Jijin Yang
- Department of Interventional Radiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
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12
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Dendy MS, Ludwig JM, Stein SM, Kim HS. Locoregional Therapy, Immunotherapy and the Combination in Hepatocellular Carcinoma: Future Directions. Liver Cancer 2019; 8:326-340. [PMID: 31768343 PMCID: PMC6873025 DOI: 10.1159/000494843] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 10/23/2018] [Indexed: 02/04/2023] Open
Abstract
Image-guided locoregional therapies (LRTs) have long been a vital part of treatment regimens for hepatocellular carcinoma (HCC). Ablation, chemoembolization, and radioembolization are examples of commonly used treatment techniques for HCC. This review describes the various methods utilized to treat HCC in the field of interventional oncology and also focuses on new and novel treatment concepts being developed in the field including the use of novel immunotherapy agents and combination therapy of LRTs with immunotherapy.
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Affiliation(s)
- Meaghan S. Dendy
- Division of Interventional Radiology, Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA
| | - Johannes M. Ludwig
- Division of Interventional Radiology, Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA,Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Stacey M. Stein
- Division of Medical Oncology, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA,Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut, USA
| | - Hyun S. Kim
- Division of Interventional Radiology, Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA,Division of Medical Oncology, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA,Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut, USA,*Hyun S. Kim, MD, Yale Cancer Center, Yale School of Medicine, 330 Cedar Street, TE 2-224, New Haven, CT 06510 (USA), E-Mail
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13
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Sweeney J, Parikh N, El-Haddad G, Kis B. Ablation of Intrahepatic Cholangiocarcinoma. Semin Intervent Radiol 2019; 36:298-302. [PMID: 31680720 PMCID: PMC6823041 DOI: 10.1055/s-0039-1696649] [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] [Indexed: 12/18/2022]
Abstract
Intrahepatic cholangiocarcinoma is the second most common primary liver cancer but represents only a small portion of all primary liver cancers. At the time of diagnosis, patients are often not surgical candidates due to tumor burden of other comorbidities. In addition, there is a very high rate of tumor recurrence after resection. Local regional therapies, specifically ablative therapies of radiofrequency ablation, microwave ablation, cryoablation, and irreversible electroporation, have proven to be beneficial with other hepatic tumors. The purpose of this review is to provide an overview and update of the medical literature demonstrating ablative therapy as a treatment option for intrahepatic cholangiocarcinoma.
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Affiliation(s)
- Jennifer Sweeney
- Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center, Tampa, Florida
| | - Nainesh Parikh
- Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center, Tampa, Florida
| | - Ghassan El-Haddad
- Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center, Tampa, Florida
| | - Bela Kis
- Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center, Tampa, Florida
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Abstract
OBJECTIVE Imaging plays a key role in the assessment of patients before, during, and after percutaneous cryoablation of hepatic tumors. Intra-procedural and early post-procedure imaging with CT and MRI is vital to the assessment of technical success including adequacy of ablation zone coverage. Recognition of the normal expected post-procedure findings of hepatic cryoablation such as ice ball formation, hydrodissection, and the normal appearance of the ablation zone is crucial to be able to differentiate from complications including vascular, biliary, or non-target organ injury. Delayed imaging is essential for determination of clinical effectiveness and detection of unexpected findings such as residual unablated tumor and local tumor progression. The purpose of this article is to review the spectrum of expected and unexpected imaging findings that may occur during or after percutaneous cryoablation of hepatic tumors. CONCLUSION Differentiating expected from unexpected findings during and after hepatic cryoablation helps radiologists identify residual or recurrent tumor and detect procedure-related complications.
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Kwon JH, Won JY, Han K, Han S, Kim D, Kim H, Kim GM, Kim MD, Lee DY. Safety and Efficacy of Percutaneous Cryoablation for Small Hepatocellular Carcinomas Adjacent to the Heart. J Vasc Interv Radiol 2019; 30:1223-1228. [PMID: 30956074 DOI: 10.1016/j.jvir.2018.12.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 12/21/2018] [Accepted: 12/21/2018] [Indexed: 01/22/2023] Open
Abstract
PURPOSE This study evaluated the safety and efficacy of percutaneous cryoablation for treatment of the left subdiaphragmatic small hepatocellular carcinomas (HCCs) adjacent to the heart. MATERIALS AND METHODS Between September 2013 and March 2018, 189 consecutive patients underwent cryoablation for small HCCs (≤3 cm); 70 patients (mean: 61.3 ± 10.6 years of age; range: 40-82 years) with left hepatic tumors (22 juxtacardiac and 48 nonjuxtacardiac tumors) were retrospectively analyzed. Patients were divided into juxtacardiac and nonjuxtacardiac tumor groups (tumor margins: ≤10 mm and >10 mm, respectively, from the heart border). The rates of technical success, complete ablation, complications, and local tumor recurrence (LTR) were evaluated. RESULTS No significant intergroup differences were observed in the mean diameter of the tumor (17.9 ± 5.5 mm vs. 17.5 mm ± 5.2, respectively; P = 0.781) and of the ablation zone (41.3 ± 4.2 mm vs. 43.5 ± 5.8 mm, respectively; P = 0.115). Technical success was achieved in all patients. No procedure-related major complications occurred in either group. The median follow-up period was 15 months (range: 3.1-49.6 months). No statistically significant intergroup differences were observed in the rates of complete ablation (90.9% vs. 93.8%, respectively; P = 0.646) and LTR (20% vs. 15.6%, respectively; P = 0.725). CONCLUSIONS Cryoablation is a safe treatment modality for patients with juxtacardiac small HCCs, without an increased risk of cardiac complications compared to treatment of HCCs that are nonjuxtacardiac, and with comparable efficacy.
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Affiliation(s)
- Joon Ho Kwon
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
| | - Jong Yun Won
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea.
| | - Kichang Han
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
| | - Seungchul Han
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
| | - Doyoung Kim
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
| | - Heejoon Kim
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
| | - Gyoung Min Kim
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
| | - Man-Deuk Kim
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
| | - Do Yun Lee
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50 Yonsei-ro Seodaemun-gu, Seoul 120-752, Korea
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16
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Kis B, El-Haddad G, Sheth RA, Parikh NS, Ganguli S, Shyn PB, Choi J, Brown KT. Liver-Directed Therapies for Hepatocellular Carcinoma and Intrahepatic Cholangiocarcinoma. Cancer Control 2018; 24:1073274817729244. [PMID: 28975829 PMCID: PMC5937250 DOI: 10.1177/1073274817729244] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (IHC) are primary liver cancers where all or most of the tumor burden is usually confined to the liver. Therefore, locoregional liver-directed therapies can provide an opportunity to control intrahepatic disease with minimal systemic side effects. The English medical literature and clinical trials were reviewed to provide a synopsis on the available liver-directed percutaneous therapies for HCC and IHC. Locoregional liver-directed therapies provide survival benefit for patients with HCC and IHC compared to best medical treatment and have lower comorbid risks compared to surgical resection. These treatment options should be considered, especially in patients with unresectable disease.
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Affiliation(s)
- Bela Kis
- 1 Department of Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Ghassan El-Haddad
- 1 Department of Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Rahul A Sheth
- 2 Department of Interventional Radiology, MD Anderson Cancer Center, Houston, TX, USA
| | - Nainesh S Parikh
- 1 Department of Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Suvranu Ganguli
- 3 Center for Image Guided Cancer Therapy, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Paul B Shyn
- 4 Department of Radiology, Abdominal Imaging and Intervention, Brigham and Women's, Boston, MA, USA
| | - Junsung Choi
- 1 Department of Diagnostic Imaging and Interventional Radiology, Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Karen T Brown
- 5 Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Li B, Liu C, Xu XX, Li Y, Du Y, Zhang C, Zheng HJ, Yang HF. Clinical Application of Artificial Ascites in assisting CT-guided Percutaneous Cryoablation of Hepatic Tumors Adjacent to the Gastrointestinal Tract. Sci Rep 2017; 7:16689. [PMID: 29192180 PMCID: PMC5709352 DOI: 10.1038/s41598-017-17023-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 11/21/2017] [Indexed: 01/30/2023] Open
Abstract
This study was to assess the safety and efficacy of artificial ascitetes in assisting CT-guided cryoablation of hepatic tumors adjacent to the gastrointestinal (GI) tract. A total of 84 patients with peripheral hepatic tumors adjacent to the GI tract, who were treated cryoablation, were included in this retrospective study. Of these 84 patients, cryoablation had been performed in 39 patients with 41 peripheral hepatic tumors. These were assisted by induction artificial ascites while 40 patients with 43 peripheral hepatic tumors underwent cryoablation without induction of ascites. The artificial ascites separation success rate, the cryoablation technique effectiveness, local tumor progression and complications were all evaluated. The results showed that the artificial ascites separation success rate for 41 hepatic tumors adjacent to the GI tract was 95% (39/41). Technique effectiveness of group I was achieved in 35 of 43 tumors (81.3%) after follow-up imaging three months after cryoablation. In group II, technique effectiveness was achieved in 39 of 41 tumors after follow-up imaging three months following cryoablation. No major complications were encountered in either of the two groups. Artificial ascites assisting in CT-guided percutaneous cryoablation is a reliable and effective method for the treatment of hepatic tumors adjacent to the GI tract, and it can achieve a fine local control of such tumors.
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Affiliation(s)
- Bing Li
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China
| | - Chuan Liu
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China
| | - Xiao-Xue Xu
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China
| | - Yang Li
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China
| | - Yong Du
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China
| | - Chuan Zhang
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China
| | - Hou-Jun Zheng
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China
| | - Han-Feng Yang
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Province, Nanchong, 637000, China.
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Percutaneous Image-Guided Cryoablation of Hepatic Tumors: Single-Center Experience With Intermediate to Long-Term Outcomes. AJR Am J Roentgenol 2017; 209:1381-1389. [PMID: 28952807 DOI: 10.2214/ajr.16.17582] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The purpose of this article is to report our intermediate to long-term outcomes with image-guided percutaneous hepatic tumor cryoablation and to evaluate its technical success, technique efficacy, local tumor progression, and adverse event rate. MATERIALS AND METHODS Between 1998 and 2014, 299 hepatic tumors (243 metastases and 56 primary tumors; mean diameter, 2.5 cm; median diameter, 2.2 cm; range, 0.3-7.8 cm) in 186 patients (95 women; mean age, 60.9 years; range, 29-88 years) underwent cryoablation during 236 procedures using CT (n = 126), MRI (n = 100), or PET/CT (n = 10) guidance. Technical success, technique efficacy at 3 months, local tumor progression (mean follow-up, 2.5 years; range, 2 months to 14.6 years), and adverse event rates were calculated. RESULTS The technical success rate was 94.6% (279/295). The technique efficacy rate was 89.5% (231/258) and was greater for tumors smaller than 4 cm (93.4%; 213/228) than for larger tumors (60.0%; 18/30) (p < 0.0001). Local tumor progression occurred in 23.3% (60/258) of tumors and was significantly more common after the treatment of tumors 4 cm or larger (63.3%; 19/30) compared with smaller tumors (18.0%; 41/228) (p < 0.0001). Adverse events followed 33.8% (80/236) of procedures and were grade 3-5 in 10.6% (25/236) of cases. Grade 3 or greater adverse events more commonly followed the treatment of larger tumors (19.5%; 8/41) compared with smaller tumors (8.7%; 17/195) (p = 0.04). CONCLUSION Image-guided percutaneous cryoablation of hepatic tumors is efficacious; however, tumors smaller than 4 cm are more likely to be treated successfully and without an adverse event.
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Herwald SE, Chen JH, Arellano RS. Irreversible Electroporation for Treatment of Hepatocellular Carcinoma Adjacent to the Gallbladder. J Vasc Interv Radiol 2017; 27:1093-4. [PMID: 27338501 DOI: 10.1016/j.jvir.2016.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 03/04/2016] [Accepted: 03/08/2016] [Indexed: 12/14/2022] Open
Affiliation(s)
- Sanna E Herwald
- Tufts University School of Medicine, 145 Harrison Avenue, Boston, MA 02111
| | - Jonathan H Chen
- Departments of Pathology and Radiology, Massachusetts General Hospital, Boston, Massachusetts
| | - Ronald S Arellano
- Tufts University School of Medicine, 145 Harrison Avenue, Boston, MA 02111
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20
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Abstract
Local ablation therapy is considered as a conventional treatment option for patients with early stage hepatocellular carcinoma (HCC). Although radiofrequency (RF) ablation is widely used for HCC, the use of cryoablation has been increasing as newer and safer cryoablation systems have developed. The thermodynamic mechanism of freezing and thawing used in cryoablation is the Joule-Thomson effect. Cryoablation destroys tissue via direct tissue destruction and vascular-related injury. A few recent comparative studies have shown that percutaneous cryoablation for HCCs is comparable to percutaneous RF ablation in terms of long term therapeutic outcomes and complications. Cryoablation has several advantages over RF ablation such as well visualization of iceball, no causation of severe pain, and lack of severe damage to great vessels and gallbladder. It is important to know the advantages and disadvantages of cryoablation compared with RF ablation for improvement of therapeutic efficacy and safety.
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Affiliation(s)
- Kyoung Doo Song
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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21
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Zeng J, Qin Z, Zhou L, Fang G, Chen J, Li J, Niu L, Liang B, Xu K. Comparison between cryoablation and irreversible electroporation of rabbit livers at a location close to the gallbladder. Radiol Oncol 2017; 51:40-46. [PMID: 28265231 PMCID: PMC5330171 DOI: 10.1515/raon-2017-0003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 11/19/2016] [Indexed: 02/06/2023] Open
Abstract
Background The ablation of liver tumors located close to the gallbladder is likely to lead to complications. The aim of this article is to compare the safety and efficacy of irreversible electroporation (IRE) and cryoablation in rabbit livers at a location close to the gallbladder. Materials and methods We performed cryoablation (n = 12) and IRE (n = 12) of the area of the liver close to the gallbladder in 24 New Zealand white rabbits in order to ensure gallbladder damage. Serum aminotransferase and serum bilirubin levels were measured before and after the ablation. Histopathological examination of the ablation zones in the liver and gallbladder was performed on the 7th day after the ablation. Result Seven days after the ablation, all 24 animals were alive. Gallbladder perforation did not occur in the IRE group; only mucosal epithelial necrosis and serous layer edema were found in this group. Gallbladder perforation occurred in four rabbits in the cryoablation group. Serum aminotransferase and serum bilirubin levels obviously increased in both groups by Day 3 and decreased gradually thereafter. The elevation in aminotransferase and bilirubin levels was greater in the cryoablation group than the IRE group. Pathological examination revealed complete necrosis of the liver parenchyma from the ablation center to the gallbladder in both groups, but bile duct and granulation tissue hyperplasia were observed in only the IRE group. Full-thickness gallbladder-wall necrosis was seen in the cryoablation group. Conclusions For ablation of the liver area near the gallbladder, IRE is superior to cryoablation, both in terms of safety (no gallbladder perforation in the IRE group) and efficacy (complete necrosis and rapid recovery in the IRE group).
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Affiliation(s)
- Jianying Zeng
- School of Medicine, Jinan University, Guangdong Province, Guangzhou, China
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Zilin Qin
- School of Medicine, Jinan University, Guangdong Province, Guangzhou, China
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Liang Zhou
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Gang Fang
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Jibing Chen
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Jialiang Li
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Lizhi Niu
- School of Medicine, Jinan University, Guangdong Province, Guangzhou, China
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Bing Liang
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
| | - Kecheng Xu
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangdong Province, Guangzhou, China
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22
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Cryoablation of Hepatocellular Carcinoma with High-Risk for Percutaneous Ablation: Safety and Efficacy. Cardiovasc Intervent Radiol 2016; 39:1447-54. [PMID: 27256103 DOI: 10.1007/s00270-016-1384-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Accepted: 05/23/2016] [Indexed: 12/11/2022]
Abstract
PURPOSE The aim of this study was to evaluate the safety and effectiveness of cryoablation in the treatment of subcapsular hepatocellular carcinoma (HCC) adjacent to various organs. MATERIALS AND METHODS Twenty-eight patients with subcapsular HCC were treated with cryoablation in our institution. The degree of peri-procedural pain was measured using the visual analog scale (VAS). Technical success, local tumor progression, and overall disease progression rates were calculated. Procedure-related complications were identified by reviewing electronic medical records. Biochemical data, including serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), and total bilirubin levels before and after the procedure were collected. RESULTS Subcapsular HCC tumors were located near the gallbladder, colon, stomach, kidney, diaphragm, or abdominal wall. The technical success rate of cryoablation was 96.4 % (27/28). Local recurrence- and progression-free survival rates were 96 and 84 % at 6 months, and 82 and 43 % at 1 year, respectively. All patients survived during the follow-up period. The VAS pain score ranged from 0 to 3 (mean, 1.57). A major complication occurred in one patient (3.6 %) and minor complications occurred at a rate of 17.9 %. Transient elevations of serum AST, ALT, and bilirubin levels were observed. CONCLUSION Cryoablation is a safe and an effective procedure for the treatment of subcapsular HCC adjacent to various major organs.
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