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Shang Y, Li G, Zhang B, Wu Y, Chen Y, Li C, Zhao W, Liu J. Image-guided percutaneous ablation for lung malignancies. Front Oncol 2022; 12:1020296. [PMID: 36439490 PMCID: PMC9685331 DOI: 10.3389/fonc.2022.1020296] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/19/2022] [Indexed: 10/21/2023] Open
Abstract
Image-guided percutaneous lung ablation has proven to be an alternative and effective strategy in the treatment of lung cancer and other lung malignancies. Radiofrequency ablation, microwave ablation, and cryoablation are widely used ablation modalities in clinical practice that can be performed along or combined with other treatment modalities. In this context, this article will review the application of different ablation strategies in lung malignancies.
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Affiliation(s)
- Youlan Shang
- Second Xiangya Hospital, Central South University, Changsha, China
| | - Ge Li
- Xiangya Hospital, Central South University, Changsha, China
| | - Bin Zhang
- Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuzhi Wu
- Second Xiangya Hospital, Central South University, Changsha, China
| | - Yanjing Chen
- Second Xiangya Hospital, Central South University, Changsha, China
| | - Chang Li
- Second Xiangya Hospital, Central South University, Changsha, China
| | - Wei Zhao
- Second Xiangya Hospital, Central South University, Changsha, China
| | - Jun Liu
- Second Xiangya Hospital, Central South University, Changsha, China
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Han Y, Yan X, Zhi W, Liu Y, Xu F, Yan D. Long-term outcome following microwave ablation of lung metastases from colorectal cancer. Front Oncol 2022; 12:943715. [PMID: 35936731 PMCID: PMC9354679 DOI: 10.3389/fonc.2022.943715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/27/2022] [Indexed: 12/03/2022] Open
Abstract
Purpose To retrospectively evaluate the safety and efficacy of percutaneous computed tomography (CT)-guided microwave ablation (MWA) in colorectal cancer (CRC) lung metastases, and to analyze prognostic factors. Materials and methods Data were collected from 31 patients with CRC lung metastases from May 2013 to September 2017. They had removed the CRC, no extrapulmonary metastases, no more than three metastases in the lung, the maximum diameter of the lesions was ≤3 cm, and all the lung metastases could be completely ablated. The ablation procedures were performed using a KY-2000 microwave multifunctional therapeutic apparatus. Efficacy is assessed two to four weeks after ablation, and follow-up are performed every three months for two years. The primary outcome was overall survival (OS). The secondary outcomes were progression-free survival (PFS), and complications. Cox regression analysis was used for the evaluation of the statistical significance of factors affecting the end result of MWA therapy. The Kaplan–Meier method was used for estimation of survival rates. Results A total of 45 metastatic lung lesions from CRC in 31 patients were treated with CT-guided MWA procedures. The median OS was 76 months. The one, two, three, and five-year survival rates were 93.5%, 80.6%, 61.3%, and 51.6%, respectively. Multivariate analysis showed that the primary tumor from the rectum (P = 0.009) and liver metastases at the diagnosis of lung metastases (P = 0.043) were risk factors affecting OS, while PFS was a protective factor. The median PFS was 13 months. The maximum diameter of lung metastases lesions (P = 0.004) was a risk factor. The interval between pulmonary metastases and MWA (P=0.031) was the protective factor. Pneumothorax was observed in 13 out of 36 procedures. Four patients developed pneumothorax requiring drainage tube insertion. No patient deaths occurred within 30 days of ablation. Three out of 31 patients (9.67%) were found to have local recurrence of the original lung metastatic ablation foci. Conclusion MWA therapy may be safely and effectively used as a therapeutic tool for the treatment of selected CRC pulmonary metastases, and the prognosis is better in patients without liver metastases at the diagnosis of lung metastases.
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Affiliation(s)
- Yue Han
- Department of Interventional Therapy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Yue Han,
| | - Xue Yan
- Department of General Surgery, Cancer Hospital of Huanxing, Beijing, China
| | - Weihua Zhi
- Department of Interventional Therapy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ye Liu
- London School of Hygiene and Tropical Medicine, University of London, London, United Kingdom
| | - Fei Xu
- Department of Interventional Therapy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dong Yan
- Department of Interventional Therapy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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CT after Lung Microwave Ablation: Normal Findings and Evolution Patterns of Treated Lesions. Tomography 2022; 8:617-626. [PMID: 35314628 PMCID: PMC8938788 DOI: 10.3390/tomography8020051] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/31/2022] [Accepted: 02/08/2022] [Indexed: 11/17/2022] Open
Abstract
Imaging-guided percutaneous ablative treatments, such as radiofrequency ablation (RFA), cryoablation and microwave ablation (MWA), have been developed for the treatment of unresectable primary and secondary lung tumors in patients with advanced-stage disease or comorbidities contraindicating surgery. Among these therapies, MWA has recently shown promising results in the treatment of pulmonary neoplasms. The potential advantages of MWA over RFA include faster ablation times, higher intra-tumoral temperatures, larger ablation zones and lower susceptibility to the heat sink effect, resulting in greater efficacy in proximity to vascular structures. Despite encouraging results supporting its efficacy, there is a relative paucity of data in the literature regarding the role of computer tomography (CT) to monitor MWA-treated lesions, and the CT appearance of their morphologic evolution and complications. For both interventional and non-interventional radiologists, it is crucial to be familiar with the CT features of such treated lesions in order to detect incomplete therapy or recurrent disease at early stage, as well as to recognize initial signs of complications. The aim of this pictorial essay is to describe the typical CT features during follow-up of lung lesions treated with percutaneous MWA and how to interpret and differentiate them from other radiological findings, such as recurrence and complications, that are commonly encountered in this setting.
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Meng M, Han X, Li W, Huang G, Ni Y, Wang J, Zhang T, Dai J, Zou Z, Yang X, Ye X. CT-guided microwave ablation in patients with lung metastases from breast cancer. Thorac Cancer 2021; 12:3380-3386. [PMID: 34725933 PMCID: PMC8671896 DOI: 10.1111/1759-7714.14212] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 11/28/2022] Open
Abstract
Background Computed tomography (CT)‐guided percutaneous microwave ablation (MWA) is a very common ablation method that shows a good local tumor control rate in primary and secondary lung tumors. At present, few reports have explored the safety and efficacy of MWA for lung metastases from breast cancer. Methods From January 2012 to January 2018, 32 breast cancer patients with 46 pulmonary metastases received CT‐guided percutaneous MWA. The study was approved by the local institutional review board. The clinical efficacy and complications of MWA were investigated. Results The median follow‐up time was 32 months and the main effective rate was 97.8% (45/46). Five of 46 lesions had local progression (10.9%), with a median progression time of 10 months. The 1‐, 3‐, and 5‐year overall survival (OS) rates were 96.9%, 53.3%, and 17.8%, respectively. The median OS time was 36 months. Among 46 MWA treatments, 11 (23.9%) had massive pneumothorax, two (4.3%) had massive pleural effusion, and two (4.3%) had a pulmonary infection. Conclusion CT‐guided percutaneous MWA may be safe and effective for treating lung metastases from breast cancer.
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Affiliation(s)
- Min Meng
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiaoying Han
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Wenhong Li
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Guanghui Huang
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yang Ni
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jiao Wang
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Tiehong Zhang
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jianjian Dai
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhigeng Zou
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xia Yang
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xin Ye
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
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Imaging following thermal ablation of early lung cancers: expected post-treatment findings and tumour recurrence. Clin Radiol 2021; 76:864.e13-864.e23. [PMID: 34420686 DOI: 10.1016/j.crad.2021.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 07/13/2021] [Indexed: 12/22/2022]
Abstract
Thermal ablation is a minimally invasive technique that is growing in acceptance and popularity in the management of early lung cancers. Although curative resection remains the optimal treatment strategy for stage I pulmonary malignancies, percutaneous ablative treatments may also be considered for selected patients. These techniques can additionally be used in the treatment of oligometastatic disease. Thermal ablation of early lung tumours can be achieved using several different techniques. For example, microwave ablation (MWA) and radiofrequency ablation (RFA) utilise extreme heat, whereas cryoablation uses extremely cold temperatures to cause necrosis and ultimately cell death. Typically, post-ablation imaging studies are performed within the first 1-3 months with subsequent imaging performed at regular intervals to ensure treatment response and to evaluate for signs of recurrent disease. Surveillance imaging is usually undertaken with computed tomography (CT) and integrated positron-emission tomography (PET)/CT. Typical imaging findings are usually seen on CT and PET/CT following thermal ablation of lung tumours, and it is vital that radiologists are familiar with these appearances. In addition, radiologists should be aware of the imaging findings that indicate local recurrence following ablation. The objective of this review is to provide an overview of the expected post-treatment findings on CT and PET/CT following thermal ablation of early primary lung malignancies, as well as describing the imaging appearances of local recurrence.
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Habert P, Di Bisceglie M, Hak JF, Brige P, Chopinet S, Mancini J, Bartoli A, Vidal V, Roux C, Tselikas L, De Baere T, Gaubert JY. Percutaneous lung and liver CT-guided ablation on swine model using microwave ablation to determine ablation size for clinical practice. Int J Hyperthermia 2021; 38:1140-1148. [PMID: 34353206 DOI: 10.1080/02656736.2021.1961883] [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: 10/20/2022] Open
Abstract
PURPOSE Microwave ablation (MWA) provides an effective treatment of lung and liver tumors but suffers from a lack of reproducibility of ablation size among currently available technologies. In-vitro evaluations are far removed from clinical practices because of uninfused tissue. This study is in-vivo preclinical testing of a new MWA system on swine lungs and liver. MATERIALS AND METHODS All ablations were performed under CT guidance and multiple algorithms were tested with a power of 50, 75, and 100 W for durations of 3, 5, 8, 10, and 15 min. A 3 D-evaluation of the ablation zone was carried out using enhanced-CT. The sphericity index, coefficients of variation, and energy efficiency (which corresponds to the volume yield according to the power supplied) were calculated. RESULTS Fifty liver and 48 lung ablations were performed in 17 swine. The sphericity index varies from 0.50 to 0.80 for liver ablations and from 0.40 to 0.69 for lung ablations. The coefficient of variation was below 15% for 4/5 and 4/8 protocols for lung and liver ablations, respectively. The energy efficiency seems to decrease with the duration of the ablation from 0.60 × 10-3 cm3/J (75 W, 3 min) to 0.26 × 10-3 cm3/J (100 W, 15 min) in the liver and from 0.57 × 10-3 cm3/J (50 W, 10 min) to 0.42 × 10-3 cm3/J (100 W, 12 min) in the lungs. CONCLUSION A shorter treatment time provides the best energy efficiency, and the best reproducibility is obtained for a 10 min treatment duration. The system tested provides an interesting reproducibility in both lung and liver measurements. Our results may help interventional radiologists in the optimal selection of treatment parameters.
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Affiliation(s)
- Paul Habert
- Department of Interventional Imaging, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille University, LIIE, Marseille, France.,Aix Marseille University, CERIMED, Marseille, France
| | - Mathieu Di Bisceglie
- Department of Interventional Imaging, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille University, LIIE, Marseille, France.,Aix Marseille University, CERIMED, Marseille, France
| | - Jean-François Hak
- Department of Interventional Imaging, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille University, LIIE, Marseille, France.,Aix Marseille University, CERIMED, Marseille, France
| | - Pauline Brige
- Aix Marseille University, LIIE, Marseille, France.,Aix Marseille University, CERIMED, Marseille, France
| | - Sophie Chopinet
- Aix Marseille University, LIIE, Marseille, France.,Aix Marseille University, CERIMED, Marseille, France.,Department of Visceral Surgery, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Julien Mancini
- Biostatistics Department, BIOSTIC, Aix Marseille University, APHM, INSERM, IRD, SESSTIM, ISSPAM, Hop Timone, Marseille, France
| | - Axel Bartoli
- Department of Interventional Imaging, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Vincent Vidal
- Department of Interventional Imaging, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille University, LIIE, Marseille, France.,Aix Marseille University, CERIMED, Marseille, France
| | - Charles Roux
- Departement d'Anesthesie, Chirurgie et Interventionel, Gustave Roussy, Paris, France.,Université Paris-Saclay, Paris, France
| | - Lambros Tselikas
- Departement d'Anesthesie, Chirurgie et Interventionel, Gustave Roussy, Paris, France.,Université Paris-Saclay, Paris, France
| | - Thierry De Baere
- Departement d'Anesthesie, Chirurgie et Interventionel, Gustave Roussy, Paris, France.,Université Paris-Saclay, Paris, France
| | - Jean-Yves Gaubert
- Department of Interventional Imaging, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille University, LIIE, Marseille, France.,Aix Marseille University, CERIMED, Marseille, France
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Xu S, Qi J, Li B, Bie ZX, Li YM, Li XG. Risk prediction of pneumothorax in lung malignancy patients treated with percutaneous microwave ablation: development of nomogram model. Int J Hyperthermia 2021; 38:488-497. [PMID: 33754941 DOI: 10.1080/02656736.2021.1902000] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES To develop effective nomograms for predicting pneumothorax and delayed pneumothorax after microwave ablation (MWA) in lung malignancy (LM) patients. METHODS LM patients treated with MWA were randomly allocated to a training or validation cohort at a ratio of 7:3. The predictors of pneumothorax identified by univariate and multivariate analyses in the training cohort were used to develop a predictive nomogram. The C-statistic was used to evaluate predictive accuracy in both cohorts. A second nomogram for predicting delayed pneumothorax was developed and validated using identical methods. RESULTS A total of 552 patients (training cohort: n = 402; validation cohort: n = 150) were included; of these patients, 27.9% (154/552) developed pneumothorax, with immediate and delayed pneumothorax occurring in 18.8% (104/552) and 9.1% (50/552), respectively. The predictors selected for the nomogram of pneumothorax were emphysema (hazard ratio [HR], 6.543; p < .001), history of lung ablation (HR, 7.841; p= .025), number of pleural punctures (HR, 1.416; p < .050), ablation zone encompassing pleura (HR, 10.225; p < .001) and pulmonary fissure traversed by needle (HR, 10.776; p < .001). The C-statistics showed good predictive performance in the training and validation cohorts (0.792 and 0.832, respectively). Another nomogram for delayed pneumothorax was developed based on emphysema (HR, 2.952; p= .005), ablation zone encompassing pleura (HR, 4.915; p < .001) and pulmonary fissure traversed by needle (HR, 4.348; p = .015). The C-statistics showed good predictive performance in the training cohort, and it had efficacy for prediction in the validation cohort (0.719 and 0.689, respectively). CONCLUSIONS The nomograms could effectively predict the risk of pneumothorax and delayed pneumothorax after MWA.
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Affiliation(s)
- Sheng Xu
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, PR China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Jing Qi
- School of Medicine, Nankai University, Tianjin, PR China
| | - Bin Li
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Zhi-Xin Bie
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Yuan-Ming Li
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, PR China
| | - Xiao-Guang Li
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, PR China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, PR China
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Xu S, Qi J, Li B, Bie ZX, Li YM, Li XG. Risk prediction of pleural effusion in lung malignancy patients treated with CT-guided percutaneous microwave ablation: a nomogram and artificial neural network model. Int J Hyperthermia 2021; 38:220-228. [PMID: 33593220 DOI: 10.1080/02656736.2021.1885755] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES To develop an effective nomogram and artificial neural network (ANN) model for predicting pleural effusion after percutaneous microwave ablation (MWA) in lung malignancy (LM) patients. METHODS LM patients treated with MWA were randomly allocated to either the training cohort or the validation cohort (7:3). The predictors of pleural effusion identified by univariable and multivariable analyses in the training cohort were used to develop a nomogram and ANN model. The C-statistic was used to evaluate the predictive accuracy in both the training and validation cohorts. RESULTS A total of 496 patients (training cohort: n = 357; validation cohort: n = 139) were enrolled in this study. The predictors selected into the nomogram for pleural effusion included the maximum power (hazard ratio [HR], 1.060; 95% confidence interval [CI], 1.022-1.100, p = 0.002), the number of pleural punctures (HR, 2.280; 95% CI, 1.103-4.722; p = 0.026) and the minimum distance from needle to pleura (HR, 0.840; 95% CI, 0.775-0.899; p < 0.001). The C-statistic showed good predictive performance in both cohorts, with a C-statistic of 0.866 (95% CI, 0.787-0.945) internally and 0.782 (95% CI, 0.644-0.920) externally (training cohort and validation cohort, respectively). The optimal cutoff value for the risk of pleural effusion was 0.16. CONCLUSIONS Maximum power, number of pleural punctures and minimum distance from needle to pleura were predictors of pleural effusion after MWA in LM patients. The nomogram and ANN model could effectively predict the risk of pleural effusion after MWA. Patients showing a high risk (>0.16) on the nomogram should be monitored for pleural effusion.
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Affiliation(s)
- Sheng Xu
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Beijing, China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Jing Qi
- School of Medicine, Nankai University, Tianjin, China
| | - Bin Li
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Zhi-Xin Bie
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Yuan-Ming Li
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Xiao-Guang Li
- Department of Minimally Invasive Tumor Therapies Center, Beijing Hospital, National Center of Gerontology, Beijing, China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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Nance M, Khazi Z, Kaifi J, Avella D, Alnijoumi M, Davis R, Bhat A. Computerized tomography-Guided Microwave Ablation of Patients with Stage I Non-small Cell Lung Cancers: A Single-Institution Retrospective Study. J Clin Imaging Sci 2021; 11:7. [PMID: 33654576 PMCID: PMC7911126 DOI: 10.25259/jcis_224_2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 01/23/2021] [Indexed: 11/16/2022] Open
Abstract
Objectives: The objective of the study was to retrospectively investigate the safety and efficacy of computerized tomography-guided microwave ablation (MWA) in the treatment of Stage I non-small cell lung cancers (NSCLCs). Material and Methods: This retrospective, single-center study evaluated 21 patients (10 males and 11 females; mean age 73.8 ± 8.2 years) with Stage I peripheral NSCLCs treated with MWA between 2010 and 2020. All patients were surveyed for metastatic disease. Clinical success was defined as absence of FDG avidity on follow-up imaging. Tumor growth within 5 mm of the original ablated territory was defined as local recurrence. Welch t-test and Fisher’s exact test were used for univariate analysis. Hazard ratio (HR) and odds ratio (OR) were determined using Cox regression and Firth logistic regression. Significance was P < 0.05. Data are expressed as mean ± standard deviation. Results: Ablated tumors had longest dimension 17.4 ± 5.4 mm and depth 19.7 ± 15.1 mm from the pleural surface. Median follow-up was 20 months (range, 0.6–56 months). Mean overall survival (OS) following lung cancer diagnosis or MWA was 26.2 ± 15.4 months (range, 5–56 months) and 23.7 ± 15.1 months (range, 3–55 months). OS at 1, 2, and 5 years was 67.6%, 61.8%, and 45.7%, respectively. Progression-free survival (PFS) was 19.1 ± 16.2 months (range, 1–55 months). PFS at 1, 2, and 5 years was 44.5%, 32.9%, and 32.9%, respectively. Technical success was 100%, while clinical success was observed in 95.2% (20/21) of patients. One patient had local residual disease following MWA and was treated with chemotherapy. Local control was 90% with recurrence in two patients following ablation. Six patients (28.6%) experienced post-ablation complications, with pneumothorax being the most common event (23.8% of patients). Female gender was associated with 90% reduction in risk of death (HR 0.1, P = 0.014). Tumor longest dimension was associated with a 10% increase in risk of death (P = 0.197). Several comorbidities were associated with increased hazard. Univariate analysis revealed pre-ablation forced vital capacity trended higher among survivors (84.7 ± 15.2% vs. 73 ± 21.6%, P = 0.093). Adjusted for age and sex, adenocarcinoma, and neuroendocrine histology trended toward improved OS (OR: 0.13, 0.13) and PFS (OR: 0.88, 0.37) compared to squamous cell carcinoma. Conclusion: MWA provides a safe and effective alternative to stereotactic brachytherapy resulting in promising OS and PFS in patients with Stage I peripheral NSCLC. Larger sample sizes are needed to further define the effects of underlying comorbidities and tumor biology.
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Affiliation(s)
- Michael Nance
- Department of Vascular and Interventional Radiology, School of Medicine, Columbia, Missouri, United States
| | - Zain Khazi
- Department of Radiology, Division of Cardiothoracic Surgery, Columbia, Missouri, United States
| | - Jussuf Kaifi
- Department of Surgery, Division of Cardiothoracic Surgery, Columbia, Missouri, United States
| | - Diego Avella
- Department of Surgery, Division of Cardiothoracic Surgery, Columbia, Missouri, United States
| | - Mohammed Alnijoumi
- Department of Pulmonary, Critical Care, and Environmental Medicine, Columbia, Missouri, United States
| | - Ryan Davis
- Department of Vascular and Interventional Radiology, University of Missouri Columbia, One Hospital Drive, Columbia, Missouri, United States
| | - Ambarish Bhat
- Department of Vascular and Interventional Radiology, University of Missouri Columbia, One Hospital Drive, Columbia, Missouri, United States
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Picchi SG, Lassandro G, Bianco A, Coppola A, Ierardi AM, Rossi UG, Lassandro F. RFA of primary and metastatic lung tumors: long-term results. Med Oncol 2020; 37:35. [PMID: 32219567 DOI: 10.1007/s12032-020-01361-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/10/2020] [Indexed: 12/27/2022]
Abstract
The aim of our study is a retrospective evaluation of effectiveness and safety of Computed Tomography (CT)-guided radiofrequency ablation (RFA) therapy of primary and metastatic lung lesions in patients that cannot be considered surgical candidates. From February 2007 to September 2017, we performed 264 CT-guided ablation sessions on 264 lesions in 174 patients (112 M and 62 F; mean age, 68 years; range 36-83 years) affected by primary and metastatic lung lesions. The 45% of patients was affected by primary lung cancer, with size range lesion of 10-50 mm, and the 55% by metastatic lung lesions with size range of 5-49 mm. All patients had no more than three metastases in the lung and pulmonary relapses were treated up to three times. Overall Survival (OS), Progression-Free Survival (PFS), Local Progression-Free Survival (LPFS) and Cancer-specific survival (CSS) at 1, 3 and 5 years were calculated both in primary lung tumors and in metastatic patients. Immediate and late RFA-related complications were reported. Pulmonary function tests were evaluated after the procedures. The effectiveness of RFA treatment was evaluated by contrast-enhanced CT. In patients affected by primary lung lesions, the OS rates were 66.73% at 1 year, 23.13% at 3 years and 16.19% at 5 years. In patients affected by metastatic lung lesions, the OS rates were 85.11%, 48.86% and 43.33%, respectively, at 1, 3 and 5 years. PFS at 1, 3 and 5 years were 79.8%, 60.42%, 15.4% in primary lung tumors and 78.59%, 51.8% and 6.07% in metastatic patients. LPFS at 1, 3 and 5 years were 79.8%, 64.69%, 18.87% in primary lung tumors and 86.29%, 69.15% and 44.45% in metastatic patients. CSS at 1, 3 and 5 years was 95.56%, 71.84%, 56.72% in primary lung tumors and 94.07%, 71% and 71% in metastatic patients. Immediate RFA-related complications (pneumothorax, pleural effusion and subcutaneous emphysema) were observed, respectively, in 42, 53 and 13 of 264 procedures (15.9%, 20% and 5%). There also occurred one major complication (lung abscess, 0.36%). No significant worsening of pulmonary function was noted. Our retrospective evaluation showed long-term effectiveness, safety and imaging features of CT-guided RFA in patients affected by primary and metastatic lung cancer as an alternative therapy in non-surgical candidates.
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Affiliation(s)
| | - Giulia Lassandro
- Department of Advanced Biomedical Sciences, Federico II University, Naples, Italy
| | - Andrea Bianco
- Department of Pulmonology, Luigi Vanvitelli University, Naples, Italy
| | | | - Anna Maria Ierardi
- UOC Radiology Fondazione IRCSS Ca' Grande Ospedale Maggiore Policlinico, Milan, Italy
| | - Umberto G Rossi
- Department of Diagnostic Imaging - Interventional Radiology Unit - EO Galliera Hospital, Genoa, Italy
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