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Bentsen KK, Brink C, Nielsen TB, Lynggaard RB, Vinholt PJ, Schytte T, Hansen O, Jeppesen SS. Cumulative rib fracture risk after stereotactic body radiotherapy in patients with localized non-small cell lung cancer. Radiother Oncol 2024; 200:110481. [PMID: 39159679 DOI: 10.1016/j.radonc.2024.110481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 08/01/2024] [Accepted: 08/14/2024] [Indexed: 08/21/2024]
Abstract
INTRODUCTION Rib fracture is a known complication after stereotactic body radiotherapy (SBRT). Patient-related parameters are essential to provide patient-tailored risk estimation, however, their impact on rib fracture is less documented compared to dosimetric parameters. This study aimed to predict the risk of rib fractures in patients with localized non-small cell lung cancer (NSCLC) post-SBRT based on both patient-related and dosimetric parameters with death as a competing risk. MATERIALS AND METHODS In total, 602 patients with localized NSCLC treated with SBRT between 2010-2020 at Odense University Hospital, Denmark were included. All patients received SBRT with 45-66 Gray (Gy)/3 fractions. Rib fractures were identified in CT-scans using a word embedding model. The cumulative incidence function was based on cause-specific Cox hazard models with variable selection based on cross-validation model likelihood performed using 50 bootstraps. RESULTS In total, 19 % of patients experienced a rib fracture. The cumulative risk of rib fracture increased rapidly from 6-54 months post-SBRT. Female gender, bone density, near max dose to the rib, V30 and V40 to the rib, gross tumor volume, and mean lung dose were significantly associated with rib fracture risk in univariable analysis. The final multi-variable model consisted of V20 and V30 to the rib and mean lung dose. CONCLUSION Female gender and low bone density in male patients are significant predictors of rib fracture risk. The final model predicting cumulative rib fracture risk of 19 % in patients with localized NSCLC treated with SBRT contained no patient-related parameters, suggesting that dosimetric parameters are the primary drivers.
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Affiliation(s)
- Kristian Kirkelund Bentsen
- Department of Oncology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark.
| | - Carsten Brink
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Tine Bjørn Nielsen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Rasmus Bank Lynggaard
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Pernille Just Vinholt
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Tine Schytte
- Department of Oncology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Olfred Hansen
- Department of Oncology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark
| | - Stefan Starup Jeppesen
- Department of Oncology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark
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2
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Wang E, Abdallah H, Snir J, Chong J, Palma DA, Mattonen SA, Lang P. Predicting the 3-Dimensional Dose Distribution of Multilesion Lung Stereotactic Ablative Radiation Therapy With Generative Adversarial Networks. Int J Radiat Oncol Biol Phys 2024:S0360-3016(24)03175-4. [PMID: 39154905 DOI: 10.1016/j.ijrobp.2024.07.2329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 05/06/2024] [Accepted: 07/29/2024] [Indexed: 08/20/2024]
Abstract
PURPOSE Because SABR therapy is being used to treat greater numbers of lung metastases, selecting the optimal dose and fractionation to balance local failure and treatment toxicity becomes increasingly challenging. Multilesion lung SABR therapy plans include spatially diverse lesions with heterogeneous prescriptions and interacting dose distributions. In this study, we developed and evaluated a generative adversarial network (GAN) to provide real-time dosimetry predictions for these complex cases. METHODS AND MATERIALS A GAN was trained to predict dosimetry on a data set of patients who received SABR therapy for lung lesions at a tertiary center. Model input included the planning computed tomography scan, the organs at risk (OARs) and target structures, and an initial estimate of exponential dose fall-off. Multilesion plans were split 80/20 for training and evaluation. Models were evaluated on voxel-voxel, clinical dose-volume histogram, and conformality metrics. An out-of-sample validation and analysis of model variance were performed. RESULTS There were 125 multilesion plans from 102 patients with 357 lesions. Patients were treated for 2 to 7 lesions, with 19 unique dose-fractionation schemes over 1 to 3 courses of treatment. The out-of-sample validation set contained an additional 90 plans from 80 patients. The mean absolute difference and gamma pass fraction between the predicted and true dosimetry was <3 Gy and >90% for all OARs. The absolute differences in lung V20 and CV14 were 1.40% ± 0.99% and 75.8 ± 42.0 cc, respectively. The ratios of predicted to true R50%, R100%, and D2cm were 1.00 ± 0.16, 0.96 ± 0.32, and 1.01 ± 0.36, respectively. The out-of-sample validation set maintained mean absolute difference and gamma pass fraction of <3 Gy and >90%, respectively for all OARs. The median standard deviation of variance in V20 and CV14 prediction was 0.49% and 22.2 cc, respectively. CONCLUSIONS A GAN for predicting the 3-D dosimetry of complex multilesion lung SABR therapy is presented. Rapid dosimetry prediction can be used to assess treatment feasibility and explore dosimetric differences between varying prescriptions.
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Affiliation(s)
- Edward Wang
- Department of Medical Biophysics, Western University, London, Ontario, Canada; Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Hassan Abdallah
- Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Jonatan Snir
- Schulich School of Medicine and Dentistry, London, Ontario, Canada; London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada; Department of Oncology, Western University, London, Ontario, Canada
| | - Jaron Chong
- Schulich School of Medicine and Dentistry, London, Ontario, Canada; Department of Medical Imaging, Western University, London, Ontario, Canada
| | - David A Palma
- Schulich School of Medicine and Dentistry, London, Ontario, Canada; London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada; Department of Oncology, Western University, London, Ontario, Canada
| | - Sarah A Mattonen
- Department of Medical Biophysics, Western University, London, Ontario, Canada; Department of Oncology, Western University, London, Ontario, Canada
| | - Pencilla Lang
- Schulich School of Medicine and Dentistry, London, Ontario, Canada; London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada; Department of Oncology, Western University, London, Ontario, Canada.
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3
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Washington I, Palm RF, White J, Rosenberg SA, Ataya D. The Role of MRI in Breast Cancer and Breast Conservation Therapy. Cancers (Basel) 2024; 16:2122. [PMID: 38893241 PMCID: PMC11171236 DOI: 10.3390/cancers16112122] [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: 04/22/2024] [Revised: 05/19/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024] Open
Abstract
Contrast-enhanced breast MRI has an established role in aiding in the detection, evaluation, and management of breast cancer. This article discusses MRI sequences, the clinical utility of MRI, and how MRI has been evaluated for use in breast radiotherapy treatment planning. We highlight the contribution of MRI in the decision-making regarding selecting appropriate candidates for breast conservation therapy and review the emerging role of MRI-guided breast radiotherapy.
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Affiliation(s)
- Iman Washington
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA;
| | - Russell F. Palm
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA;
| | - Julia White
- Department of Radiation Oncology, The University of Kansas Medical Center, 4001 Rainbow Blvd, Kansas City, KS 66160, USA;
| | - Stephen A. Rosenberg
- Department of Radiation Therapy, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, USA;
| | - Dana Ataya
- Department of Diagnostic Imaging and Interventional Radiology, H. Lee Moffitt Cancer Center & Research Institute, 10920 N. McKinley Drive, Tampa, FL 33612, USA;
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Stereotactic Body Radiation Therapy Versus Ablation Versus Surgery for Early-Stage Lung Cancer in High-Risk Patients. Thorac Surg Clin 2023; 33:179-187. [PMID: 37045487 DOI: 10.1016/j.thorsurg.2023.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
Current treatment for early-stage lung cancer focuses on surgical intervention as the mainstay of treatment; however, this poses issues in patients that are high-risk or unable to tolerate any operation. In this case, sublobar resection or radiation therapy has been the primary treatment for these subsets of patients. Alternative approaches include stereotactic body radiation therapy (SBRT) and thermal ablation. In this article, we focus on treatment strategies using SBRT, thermal ablation, or surgery as it pertains to high-risk patients with early-stage lung cancer.
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Ng J, Gregucci F, Pennell RT, Nagar H, Golden EB, Knisely JPS, Sanfilippo NJ, Formenti SC. MRI-LINAC: A transformative technology in radiation oncology. Front Oncol 2023; 13:1117874. [PMID: 36776309 PMCID: PMC9911688 DOI: 10.3389/fonc.2023.1117874] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 01/16/2023] [Indexed: 01/28/2023] Open
Abstract
Advances in radiotherapy technologies have enabled more precise target guidance, improved treatment verification, and greater control and versatility in radiation delivery. Amongst the recent novel technologies, Magnetic Resonance Imaging (MRI) guided radiotherapy (MRgRT) may hold the greatest potential to improve the therapeutic gains of image-guided delivery of radiation dose. The ability of the MRI linear accelerator (LINAC) to image tumors and organs with on-table MRI, to manage organ motion and dose delivery in real-time, and to adapt the radiotherapy plan on the day of treatment while the patient is on the table are major advances relative to current conventional radiation treatments. These advanced techniques demand efficient coordination and communication between members of the treatment team. MRgRT could fundamentally transform the radiotherapy delivery process within radiation oncology centers through the reorganization of the patient and treatment team workflow process. However, the MRgRT technology currently is limited by accessibility due to the cost of capital investment and the time and personnel allocation needed for each fractional treatment and the unclear clinical benefit compared to conventional radiotherapy platforms. As the technology evolves and becomes more widely available, we present the case that MRgRT has the potential to become a widely utilized treatment platform and transform the radiation oncology treatment process just as earlier disruptive radiation therapy technologies have done.
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Affiliation(s)
- John Ng
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, United States,*Correspondence: John Ng,
| | - Fabiana Gregucci
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, United States,Department of Radiation Oncology, Miulli General Regional Hospital, Acquaviva delle Fonti, Bari, Italy
| | - Ryan T. Pennell
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, United States
| | - Himanshu Nagar
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, United States
| | - Encouse B. Golden
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, United States
| | | | | | - Silvia C. Formenti
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, United States
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6
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Kim D, Kim K, Kim JS, Kang S, Park JM, Shin KH. Near-maximum rib dose is the most relevant risk factor for ipsilateral spontaneous rib fracture: a dosimetric analysis of breast cancer patients after radiotherapy. Strahlenther Onkol 2023; 199:38-47. [PMID: 35794206 DOI: 10.1007/s00066-022-01972-9] [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: 02/23/2022] [Accepted: 06/13/2022] [Indexed: 01/18/2023]
Abstract
PURPOSE Spontaneous rib fracture (SRF) is a common late complication in treated breast cancer patients. This study evaluated the incidence and risk factors of ipsilateral SRF after radiotherapy (RT) in breast cancer patients. In addition, we identified dosimetric parameters that were significantly associated with ipsilateral SRF. METHODS We retrospectively reviewed 2204 patients with breast cancer who underwent RT between 2014 and 2016, and were followed up with bone scans. We evaluated clinical risk factors for ipsilateral SRF. Dose-volume histogram analysis was also performed for patients (n = 538) whose dosimetric data were available. All ipsilateral ribs were manually delineated, and dosimetric parameters of the ribs were converted into the equivalent dose in 2 Gy fractions (EQD2). RESULTS Most of the patients with SRF (87.3%) were asymptomatic, and the remaining symptomatic patients complained of mild tenderness or chest wall discomfort; these symptoms all resolved within 6 months without any treatment. Ipsilateral SRF occurred in 14.5% of patients 3 years after RT. The median time to develop ipsilateral SRF was 15 months. In dosimetric analysis, near-maximum rib dose (D2cc) best predicted ipsilateral SRF. The cut-off value of D2cc was EQD2 52 Gy, as determined by receiver operating characteristic analysis. In multivariate analysis including dosimetric variables, D2cc EQD2 ≥ 52 Gy was the only significant risk factor for ipsilateral SRF. CONCLUSION Our data demonstrated that near-maximum rib dose was the best dosimetric parameter to predict ipsilateral SRF in RT-treated breast cancer patients. In addition, our results suggest that patients who received RT with exceeding rib dose cut-off value and had ipsilateral SRF on bone scan be recommended routine follow-up without additional imaging tests.
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Affiliation(s)
- Dowook Kim
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea (Republic of)
| | - Kyubo Kim
- Department of Radiation Oncology, Ewha Womans University College of Medicine, Seoul, Korea (Republic of)
| | - Jae Sik Kim
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea (Republic of).,Department of Radiation Oncology, Kyung Hee University Hospital at Gangdong, Seoul, Korea (Republic of)
| | - Seonghee Kang
- Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea (Republic of).,Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea (Republic of)
| | - Jong Min Park
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea (Republic of).,Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea (Republic of).,Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea (Republic of)
| | - Kyung Hwan Shin
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea (Republic of). .,Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea (Republic of). .,Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea (Republic of).
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7
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Faroni L, Collie L, Gabrielli F, Baldotto C, Moraes F. Role of Stereotactic Radiation Therapy in Operable and Inoperable Early-Stage Non-small Cell Lung Cancer. Curr Treat Options Oncol 2022; 23:1185-1200. [PMID: 35969313 DOI: 10.1007/s11864-022-01002-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2022] [Indexed: 11/03/2022]
Abstract
OPINION STATEMENT Radiation therapy is becoming an increasingly important part of non-small cell lung cancer (NSCLC) management. Approximately 60% of all cancer patients require radiation therapy (RT) as part of their treatment. For lung cancer, this number is even higher, reaching approximately 77% of all patients, from radical to palliative modalities of RT. This percentage may even be underestimated, as it may not account for the more recent use of RT in oligometastatic lung cancer patients. Thus, we can estimate that each year there will be approximately 21,890 new lung cancer patients in the USA requiring RT. These numbers are expected to continue to rise, as lung cancer radiation techniques continue to improve. There is growing interest in determining the best treatment options for early-stage NSCLC patients. There is well-established data showing the benefit of RT for inoperable patients, and more recent encouraging data even in operable patients.
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Affiliation(s)
- Lilian Faroni
- Instituto D'Or de Pesquisa e Ensino (IDOR), Rua Diniz Cordeiro, 30, Botafogo, Rio de Janeiro, RJ, 22281-100, Brazil.
| | - Laura Collie
- Division of Radiation Oncology, Department of Oncology, Queen's University, Kingston, Canada
| | - Flavia Gabrielli
- Instituto D'Or de Pesquisa e Ensino (IDOR), Rua Diniz Cordeiro, 30, Botafogo, Rio de Janeiro, RJ, 22281-100, Brazil
| | - Clarissa Baldotto
- Instituto D'Or de Pesquisa e Ensino (IDOR), Rua Diniz Cordeiro, 30, Botafogo, Rio de Janeiro, RJ, 22281-100, Brazil
| | - Fabio Moraes
- Division of Radiation Oncology, Department of Oncology, Queen's University, Kingston, Canada
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8
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Rydzewski NR, Yadav P, Musunuru HB, Condit KM, Francis D, Zhao SG, Baschnagel AM. Radiomic Modeling of Bone Density and Rib Fracture Risk After Stereotactic Body Radiation Therapy for Early-Stage Non-Small Cell Lung Cancer. Adv Radiat Oncol 2022; 7:100884. [PMID: 35647405 PMCID: PMC9133372 DOI: 10.1016/j.adro.2021.100884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/21/2021] [Indexed: 11/01/2022] Open
Abstract
Purpose Our purpose was to determine whether bone density and bone-derived radiomic metrics in combination with dosimetric variables could improve risk stratification of rib fractures after stereotactic body radiation therapy (SBRT) for early-stage non-small cell lung cancer (NSCLC). Methods and Materials A retrospective analysis was conducted of patients with early-stage NSCLC treated with SBRT. Dosimetric data and rib radiomic data extracted using PyRadiomics were used for the analysis. A subset of patients had bone density scans that were used to create a predicted bone density score for all patients. A 10-fold cross validated approach with 10 resamples was used to find the top univariate logistic models and elastic net regression models that predicted for rib fracture. Results A total of 192 treatment plans were included in the study with a rib fracture rate of 16.1%. A predicted bone density score was created from a multivariate model with vertebral body Hounsfield units and patient weight, with an R-squared of 0.518 compared with patient dual-energy x-ray absorptiometry T-scores. When analyzing all patients, a low predicted bone density score approached significance for increased risk of rib fracture (P = .07). On competing risk analysis, when stratifying patients based on chest wall V30 Gy and bone density score, those with a V30 Gy ≥30 cc and a low bone density score had a significantly higher risk of rib fracture compared with all other patients (P < .001), with a predicted 2-year risk of rib fracture of 28.6% (95% confidence interval, 17.2%-41.1%) and 4.9% (95% confidence interval, 2.3%-9.0%), respectively. Dosimetric variables were the primary drivers of fracture risk. A multivariate elastic net regression model including all dosimetric variables was the best predictor of rib fracture (area under the curve [AUC], 0.864). Bone density variables (AUC, 0.618) and radiomic variables (AUC, 0.617) have better predictive power than clinical variables that exclude bone density (AUC, 0.538). Conclusion Radiomic features, including a bone density score that includes vertebral body Hounsfield units and radiomic signatures from the ribs, can be used to stratify risk of rib fracture after SBRT for NSCLC.
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Affiliation(s)
- Nicholas R. Rydzewski
- Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
- Carbone Cancer Center, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Poonam Yadav
- Department of Radiation Oncology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Hima Bindu Musunuru
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Kevin M. Condit
- Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
- Carbone Cancer Center, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - David Francis
- Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
- Carbone Cancer Center, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Shuang G. Zhao
- Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
- Carbone Cancer Center, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
- William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
| | - Andrew M. Baschnagel
- Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
- Carbone Cancer Center, University of Wisconsin Hospital and Clinics, Madison, Wisconsin
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Stowell JT, Walker CM, Chung JH, Bang TJ, Carter BW, Christensen JD, Donnelly EF, Hanna TN, Hobbs SB, Johnson BD, Kandathil A, Lo BM, Madan R, Majercik S, Moore WH, Kanne JP. ACR Appropriateness Criteria® Nontraumatic Chest Wall Pain. J Am Coll Radiol 2021; 18:S394-S405. [PMID: 34794596 DOI: 10.1016/j.jacr.2021.08.004] [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: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 10/19/2022]
Abstract
Chest pain is a common reason that patients may present for evaluation in both ambulatory and emergency department settings, and is often of musculoskeletal origin in the former. Chest wall syndrome collectively describes the various entities that can contribute to chest wall pain of musculoskeletal origin and may affect any chest wall structure. Various imaging modalities may be employed for the diagnosis of nontraumatic chest wall conditions, each with variable utility depending on the clinical scenario. We review the evidence for or against use of various imaging modalities for the diagnosis of nontraumatic chest wall pain. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.
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Affiliation(s)
| | | | | | - Jonathan H Chung
- Panel Chair; and Vice-Chair, Quality and Section Chief, Chest Imaging, Department of Radiology, University of Chicago, Chicago, Illinois
| | - Tami J Bang
- Co-Director, Cardiothoracic Imaging Fellowship Committee, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado; Co-Chair, membership committee, NASCI; and Membership committee, ad-hoc online content committee, STR
| | - Brett W Carter
- The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jared D Christensen
- Vice-Chair, Department of Radiology, Duke University Medical Center, Durham, North Carolina; and Chair, Lung-RADS
| | - Edwin F Donnelly
- Chief, Thoracic Imaging, Ohio State University, Columbus, Ohio; Co-Chair Physics Module Committee, RSNA
| | - Tarek N Hanna
- Associate Director, Emergency and Trauma Imaging, Emory University, Atlanta, Georgia; and Director-at-Large, American Society of Emergency Radiology
| | - Stephen B Hobbs
- Vice-Chair, Informatics and Integrated Clinical Operations and Division Chief, Cardiovascular and Thoracic Radiology, University of Kentucky, Lexington, Kentucky
| | | | | | - Bruce M Lo
- Sentara Norfolk General/Eastern Virginia Medical School, Norfolk, Virginia; and Board Member, American College of Emergency Physicians
| | - Rachna Madan
- Associate Fellowship Director, Division of Thoracic Imaging, Brigham & Women's Hospital, Boston, Massachusetts
| | - Sarah Majercik
- Vice-Chair, Surgery for Research and Director, Trauma Research, Intermountain Medical Center, Salt Lake City, Utah; and American Association for the Surgery of Trauma
| | - William H Moore
- Associate Chair, Clinical Informatics and Chief, Thoracic Imaging, New York University Langone Medical Center, New York, New York
| | - Jeffrey P Kanne
- Specialty Chair, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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10
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McGunigal M, Lischalk JW, Randolph-Jackson P, Khaitan PG. Radiation Modalities Used in Lung Cancer: An Overview for Thoracic Surgeons. Semin Thorac Cardiovasc Surg 2021; 33:1114-1121. [PMID: 33705939 DOI: 10.1053/j.semtcvs.2021.02.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 02/01/2021] [Indexed: 02/07/2023]
Abstract
Radiation is a constantly evolving technology which plays a role in the management of lung cancer in a variety of settings: as an adjunct to surgery, definitively, and palliatively. Key aspects of radiation oncology-including acute and chronic toxicities of thoracic radiation and rationale for choosing one modality of radiation over another-may be obscure to those outside the field. We aim to provide a useful overview relevant for the thoracic surgeon of radiation technology and delivery. A review was performed of salient articles identifying radiation technologies used in lung cancer which were summarized and expounded upon with focus on integrating their history, evolution, and landmark trials establishing basis of their use. This article reviews the four fundamental means of external beam radiation employed in managing lung cancer and provides visual examples of comparison plans. We also touch on potential practice-changing developments in regards to proton therapy and radiation in the era of immunotherapy. Radiation oncology has evolved considerably over time to become a critical part of lung cancer management, particularly in early-stage inoperable disease and locally advanced disease. Maximizing tumor control while minimizing toxicity drives treatment strategies. Knowledge of these fundamentals will help the thoracic surgeon answer many questions patients pose regarding radiation.
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Affiliation(s)
- Mary McGunigal
- Department of Radiation Medicine, Medstar Georgetown University Hospital, Washington, District of Columbia
| | - Jonathan W Lischalk
- Department of Radiation Medicine, Medstar Georgetown University Hospital, Washington, District of Columbia
| | - Pamela Randolph-Jackson
- Department of Radiation Oncology, Medstar Washington Hospital Center, Washington, District of Columbia.
| | - Puja Gaur Khaitan
- Department of Surgery, Division of Thoracic and Esophageal Surgery, Georgetown University School of Medicine, Medstar Washington Hospital Center, Washington, District of Columbia
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11
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Singh U, Walls GM, Hanna GG, Lynch TB, McAleese J. PET/CT features of lung SABR chest wall toxicity. J Med Imaging Radiat Oncol 2020; 65:92-94. [PMID: 33103346 DOI: 10.1111/1754-9485.13115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 09/20/2020] [Indexed: 12/25/2022]
Abstract
Stereotactic ablative radiotherapy offers a radical treatment approach for early stage lung cancers and an aggressive local therapy for pulmonary oligometastases from other tumour sites. Chest wall toxicity is one of the key dose-limiting toxicities for intrathoracic stereotactic treatments. The description of stereotactic radiotherapy chest wall toxicity using functional imaging has not been reported previously. A 56-year-old male received 60 Gy in 8 fractions delivered by volumetric modulated arc therapy for a T1bN0M0 clinical left upper lobe lung cancer. The past medical history included poorly controlled type 1 diabetes mellitus, severe peripheral vascular disease and obesity. The patient attended 9 months later with left-sided, slowly progressive chest pain. An 18 FDG PET/CT performed in order to investigate contralateral pulmonary lesions revealed FDG-avid focal thickening at the left superio-lateral thoracic wall with overlying inflammatory stranding in keeping with an indolent inflammatory process. Chest wall toxicity may present as pain, swelling, fracture and skin changes, and has the 18 FDG PET/CT chjmirocteristics of an inflammatory process. Patients with risk factors for chest wall toxicity, such as obesity, diabetes and smoking should be informed of their higher propensity for this clinically significant treatment side effect. For patients developing chest wall toxicity as demonstrated in this case with associated functional imaging findings, anti-inflammatory treatment should be promptly commenced.
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Affiliation(s)
- Urvashi Singh
- Cancer Centre Belfast City Hospital, Belfast, Northern Ireland
| | - Gerard M Walls
- Cancer Centre Belfast City Hospital, Belfast, Northern Ireland.,Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland
| | - Gerard G Hanna
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland.,Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Tom B Lynch
- Cancer Centre Belfast City Hospital, Belfast, Northern Ireland
| | - Jonathan McAleese
- Cancer Centre Belfast City Hospital, Belfast, Northern Ireland.,Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland
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12
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Abstract
Abstract
Aims:
The aim of this work is to report on the tumour control probability (TCP) of a UK cohort of lung stereotactic ablative radiotherapy patients (n = 198) for a range of dose and fractionations common in the UK.
Materials and methods:
TCP values for 3 (54 Gy), 5 (55 and 60 Gy) and 8 (50 Gy) fraction (#) schemes were calculated with the linear-quadratic Marsden TCP model using the Biosuite software.
Results:
TCP values of 100% were computed for the 3 # and for 5 # (α/β = 10 Gy) cohorts; reduced to 99% (range 97–100) for the 5 # cohort only when an α/β of 20 Gy was used. The average TCP value for the 50 Gy in 8 # regime was 97% (range 92–99, α/β = 10 Gy) and 64% (range 48–79, α/β = 20 Gy). Statistical significant differences were observed between the α/β of 10 Gy versus 20 Gy groups and between all data grouped by fraction.
Conclusion:
TCPs achievable with current planning techniques in the UK have been presented. The ultra-conservative 50 Gy in 8 # scheme returns a significantly lower TCP than the other regimes.
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13
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Lu JY, Lin PX, Huang BT. Calculating the individualized fraction regime in stereotactic body radiotherapy for non-small cell lung cancer based on uncomplicated tumor control probability function. Radiat Oncol 2019; 14:111. [PMID: 31221159 PMCID: PMC6587287 DOI: 10.1186/s13014-019-1318-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/06/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND To calculate the individualized fraction regime (IFR) in stereotactic body radiotherapy (SBRT) for non-small cell lung cancer (NSCLC) patients using the uncomplicated tumor control probability (UTCP, P+) function. METHODS Thirty-three patients with peripheral lung cancer or lung metastases who had undergone SBRT were analyzed. Treatment planning was performed using the dose regime of 48 Gy in 4 fractions. Dose volume histogram (DVH) data for the gross tumor volume (GTV), lung, chest wall (CW) and rib were exported and the dose bin was multiplied by a certain percentage of the dose in that bin which ranged from 1 to 200% in steps of 1%. For each dose fraction, P+ values were calculated by considering the tumor control probability (TCP), radiation-induced pneumonitis (RIP), chest wall pain (CWP) and radiation-induced rib fracture (RIRF). UTCP values as a function of physical dose were plotted and the maximum P+ values corresponded to the optimal therapeutic gain. The IFR in 3 fractions was also calculated with the same method by converting the dose using the linear quadratic (LQ) model. RESULTS Thirty-three patients attained an IFR using the introduced methods. All the patients achieved a TCP value higher than 92.0%. The IFR ranged from 3 × 10.8 Gy to 3 × 12.5 Gy for 3 fraction regimes and from 4 × 9.2 Gy to 4 × 10.7 Gy for 4 fraction regimes. Four patients with typical tumor characteristics demonstrated that the IFR was patient-specific and could maximize the therapeutic gain. Patients with a large tumor had a lower TCP and UTCP and a smaller fractional dose than patients with a small tumor. Patients with a tumor adjacent to the organ at risk (OAR) or at a high risk of RIP had a lower UTCP and a smaller fractional dose compared with patients with a tumor located distant from the OAR. CONCLUSIONS The proposed method is capable of predicting the IFR for NSCLC patients undergoing SBRT. Further validation in clinical samples is required.
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Affiliation(s)
- Jia-Yang Lu
- Department of Radiation Oncology, Cancer Hospital of Shantou University Medical College, No.7 Raoping Road, Shantou, 515031 China
| | - Pei-Xian Lin
- Department of Nosocomial Infection Management, The Second Affiliated Hospital of Shantou University Medical College, 69 North Dongxia Road, Shantou, 515041 China
| | - Bao-Tian Huang
- Department of Radiation Oncology, Cancer Hospital of Shantou University Medical College, No.7 Raoping Road, Shantou, 515031 China
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14
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Chest wall pain following lung stereotactic body radiation therapy using 48Gy in three fractions: A search for predictors. Cancer Radiother 2019; 23:98-103. [PMID: 30952561 DOI: 10.1016/j.canrad.2018.07.140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Accepted: 07/17/2018] [Indexed: 12/26/2022]
Abstract
PURPOSE Chest wall pain is an uncommon but bothersome late complication following lung stereotactic body radiation therapy. Despite numerous studies investigating predictors of chest wall pain, no clear consensus has been established for a chest wall constraint. The aim of our study was to investigate factors related to chest wall pain in a homogeneous group of patients treated at our institution. PATIENTS AND METHODS All 122 patients were treated with the same stereotactic body radiation therapy regimen of 48Gy in three fractions, seen for at least 6 months of follow-up, and planned with heterogeneity correction. Chest wall pain was scored according to the Common Terminology Criteria for Adverse Events classification v3.0. Patient (age, sex, diabetes, osteoporosis), tumour (planning target volume, volume of the overlapping region between planning target volume and chest wall) and chest wall dosimetric parameters (volumes receiving at least 30, 40, and 50Gy, the minimal doses received by the highest irradiated 1, 2, and 5cm3, and maximum dose) were collected. The correlation between chest wall pain (grade 2 or higher) and the different parameters was evaluated using univariate and multivariate logistic regression. RESULTS Median follow-up was 18 months (range: 6-56 months). Twelve patients out of 122 developed chest wall pain of any grade (seven with grade 1, three with grade 2 and two with grade 3 pain). In univariate analysis, only the volume receiving 30Gy or more (P=0.034) and the volume of the overlapping region between the planning target volume and chest wall (P=0.038) significantly predicted chest wall pain, but these variables were later proved non-significant in multivariate regression. CONCLUSION Our analysis could not find any correlation between the studied parameters and chest wall pain. Considering our present study and the wide range of differing results from the literature, a reasonable conclusion is that a constraint for chest wall pain is yet to be defined.
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15
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Chipko C, Ojwang J, Gharai LR, Deng X, Mukhopadhyay N, Weiss E. Characterization of Chest Wall Toxicity During Long-term Follow Up After Thoracic Stereotactic Body Radiation Therapy. Pract Radiat Oncol 2019; 9:e338-e346. [PMID: 30731275 DOI: 10.1016/j.prro.2019.01.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/28/2018] [Accepted: 01/27/2019] [Indexed: 12/25/2022]
Abstract
PURPOSE Chest wall (CW) pain and rib fractures are frequently diagnosed after stereotactic body radiation therapy (SBRT) for malignant lung tumors. We hypothesize that multiple risk factors, including bone mineral density (BMD), are associated with CW toxicity, and that CW pain and rib fractures often evolve into chronic clinical problems. METHODS AND MATERIALS A total of 118 lung tumors treated with SBRT in 100 patients with a minimum follow-up period of 2 years were retrospectively analyzed. The incidence, clinical course, and related demographic, clinical, and dosimetric factors of CW pain and rib fractures were analyzed. In addition, BMD was assessed, and the radiographic appearance of radiation-induced rib fractures and their healing process were characterized. RESULTS The median follow-up was 49 months (range, 24-106 months). CW pain developed in 33 of 118 treatments (28%) after, on average, 12.5 months (range, 0-50 months), and was more common in women (P = .04). The mean duration of CW pain was 25 months (range, 2-63 months), and 36% of patients never had resolution of CW pain. A total of 34 of 118 treatments (29%) resulted in rib fractures at a mean time of 22 months (range, 3-46 months); rib fractures were more common in women, African Americans, upper/middle lobe tumors, and patients with lower BMD (P < .05). The mean duration of rib fractures was 25 months (range, 5-41 months), and only 16 rib fractures (47%) healed. Shorter CW planning target volume distance resulted in a higher risk for both rib fractures and CW pain (P = .01). Sixty-seven percent of fractures developed surrounding soft tissue fibrosis, and 62% (21 of 34 fractures) heterotopic ossification. Diabetes, body mass index, and steroid use were not associated with CW pain or rib fracture. CONCLUSIONS Several factors were associated with a higher risk of SBRT-related CW toxicity. Optimal CW sparing (eg, volumetric modulated arc therapy, lower dose per fraction) should be considered in this patient group without compromising tumor control. SBRT-induced rib fractures commonly heal abnormally and result in potential chronic CW pain.
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Affiliation(s)
- Christopher Chipko
- Department of Radiation Oncology, Virginia Commonwealth University Health Systems, Richmond, Virginia.
| | - Julius Ojwang
- Department of Radiation Oncology, Virginia Commonwealth University Health Systems, Richmond, Virginia
| | - Leila Rezai Gharai
- Department of Diagnostic Radiology, Virginia Commonwealth University Health Systems, Richmond, Virginia
| | - Xiaoyan Deng
- Department of Biostatistics, Virginia Commonwealth University Health Systems, Richmond, Virginia
| | - Nitai Mukhopadhyay
- Department of Biostatistics, Virginia Commonwealth University Health Systems, Richmond, Virginia
| | - Elisabeth Weiss
- Department of Radiation Oncology, Virginia Commonwealth University Health Systems, Richmond, Virginia
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16
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Abel S, Hasan S, Horne ZD, Colonias A, Wegner RE. Stereotactic body radiation therapy in early-stage NSCLC: historical review, contemporary evidence and future implications. Lung Cancer Manag 2019; 8:LMT09. [PMID: 31044018 PMCID: PMC6488937 DOI: 10.2217/lmt-2018-0013] [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: 10/18/2018] [Accepted: 01/22/2018] [Indexed: 12/17/2022] Open
Abstract
Clinical use of stereotactic body radiation therapy (SBRT) has increased dramatically over the last 2 decades and is the current standard-of-care in cases of inoperable early stage non-small-cell lung cancer. While surgical resection remains the standard-of-care for operable patients, several ongoing clinical trials are investigating the role of SBRT in these operative candidates as well. Taking into consideration the expanding role and utility of SBRT, this paper will: review the historical basis of SBRT; examine landmark trials establishing the framework for the current body of evidence; discuss areas of active and future research; and identify epidemiological trends that are likely to further increase the use of SBRT.
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Affiliation(s)
- Stephen Abel
- Allegheny Health Network Cancer Institute, Division of Radiation Oncology, Pittsburgh, PA, 15212, USA
| | - Shaakir Hasan
- Allegheny Health Network Cancer Institute, Division of Radiation Oncology, Pittsburgh, PA, 15212, USA
| | - Zachary D Horne
- Allegheny Health Network Cancer Institute, Division of Radiation Oncology, Pittsburgh, PA, 15212, USA
| | - Athanasios Colonias
- Allegheny Health Network Cancer Institute, Division of Radiation Oncology, Pittsburgh, PA, 15212, USA
| | - Rodney E Wegner
- Allegheny Health Network Cancer Institute, Division of Radiation Oncology, Pittsburgh, PA, 15212, USA
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17
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Thompson M, Rosenzweig KE. The evolving toxicity profile of SBRT for lung cancer. Transl Lung Cancer Res 2019; 8:48-57. [PMID: 30788234 PMCID: PMC6351399 DOI: 10.21037/tlcr.2018.10.06] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 10/16/2018] [Indexed: 12/25/2022]
Abstract
Stereotactic body radiation therapy (SBRT) is an effective and well tolerated treatment for early stage non-small cell lung cancer (NSCLC). The high doses used in thoracic SBRT can sometimes cause adverse effects ranging from mild fatigue and transient esophagitis to fatal events such as pneumonitis or hemorrhage. Efforts continue to expand in both the utility of this technique as well as our understanding of the mechanisms of the adverse effects it can cause. In this review, we discuss the current literature regarding the potential mechanisms, dosimetric constraints and toxicities associated with SBRT alone and in conjunction with definitive chemoradiotherapy and immunotherapy. As the use of SBRT expands to these spheres, we examine the available recommendations for mitigating potential associated treatment related toxicities.
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Affiliation(s)
- Marcher Thompson
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kenneth E Rosenzweig
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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18
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Ma JT, Liu Y, Sun L, Milano MT, Zhang SL, Huang LT, Jing W, Zhao JZ, Han CB, Kong FMS. Chest Wall Toxicity After Stereotactic Body Radiation Therapy: A Pooled Analysis of 57 Studies. Int J Radiat Oncol Biol Phys 2018; 103:843-850. [PMID: 30496884 DOI: 10.1016/j.ijrobp.2018.11.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/03/2018] [Accepted: 11/16/2018] [Indexed: 02/06/2023]
Abstract
PURPOSE The significance of clinical and dosimetric risk factors in relation to chest wall (CW) injury after stereotactic body radiation therapy (SBRT) for lung tumors were analyzed through a meta-analysis of 57 published studies. METHODS AND MATERIALS Studies related to CW injury after lung SBRT were obtained through searching PubMed, Embase, and Cochrane electronic databases. An estimate of the incidence of CW pain (CWP) or rib fracture (RF) was derived using a Bayesian hierarchical model. Linear regression analysis was performed to assess the relationship between CWP or RF and clinical or dosimetric factors. RESULTS A total of 57 studies incorporating 5985 cases reporting clinical data on CW injury after SBRT were analyzed. The overall CWP and RF rates by Bayesian hierarchical modeling were 11.0% (95% confidence interval [CI], 8.0-14.4) and 6.3% (95% CI, 3.7-9.7), respectively. The rates of grade ≥2 and grade ≥3 CWP were 6.2% (95% CI, 3.88-8.93) and 1.2% (95% CI, 0.48-2.12), respectively. Sex was significantly correlated with RF (P < .001), with female patients having a greater risk of RF than male patients (hazard ratio = 0.59; 95% CI, 0.46-0.76). No correlation was found between RF, grade ≥2 CWP, or grade ≥3 CWP, with the clinical and dosimetric factors of age, tumor size, origin of lung tumor, gross tumor volume, planning target volume, fractional dose, number of fractions, or biologically effective dose. However, tumor to CW distance (<16-25 mm), body mass index, maximum dose (Dmax) of 0.5 to 5 cm3, and the volume of CW or ribs receiving >30 Gy were significantly associated with CWP and RF. CONCLUSIONS The overall rates of RF and grade ≥2 CWP after thoracic SBRT are relatively low. Sex, tumor to CW distance, maximum dose, and the radiation exposure of the CW or ribs are factors associated with the risk of CW toxicity after SBRT.
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Affiliation(s)
- Jie-Tao Ma
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yang Liu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Li Sun
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Michael T Milano
- Department of Radiation Oncology, University of Rochester School of Medicine, Rochester, New York
| | - Shu-Ling Zhang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Le-Tian Huang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wei Jing
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jian-Zhu Zhao
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Cheng-Bo Han
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Feng-Ming Spring Kong
- Department of Radiation Oncology, University Hospitals Seidman Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
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No HJ, Lester-Coll NH, Seward DJ, Sidiropoulos N, Gagne HM, Nelson CJ, Garrison GW, Kinsey CM, Lin SH, Anker CJ. Active Surveillance for Medically Inoperable Stage IA Lung Cancer in the Elderly. Cureus 2018; 10:e3472. [PMID: 30648024 PMCID: PMC6318089 DOI: 10.7759/cureus.3472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objectives Treatment for stage IA lung cancer may be too aggressive an approach in elderly patients with competing co-morbidities. We report outcomes for those electing active surveillance (AS) and investigate factors that may predict indolent disease. Materials and methods Retrospective review was performed for 12 consecutive patients, ≥70 years old, with medically inoperable stage IA, T1N0M0 lung cancer and significant co-morbidities, who chose AS with radiation therapy (RT) reserved for clear disease progression. Collected data included Charlson-Deyo Comorbidity Index (CDCI) grades, histology, and tumor size changes. Volume doubling time (VDT) calculations used a modified Schwartz equation. Results Fifteen nodules underwent AS in 12 patients; three patients had more than one nodule. Median age of all patients was 78 (range, 71–85). All patients’ CDCI grades were ≥1, 7 were ≥2. Eleven of 12 patients were deemed to be at high-risk for falls. Twelve nodules in 12 patients were biopsied; adenocarcinoma the prevailing common (47%) histology. The median, one, two and three year patient freedom-from-RT values were 21.4 months (95% CI: 11.6-not reached), 81%, 43%, and 29%, respectively. Median VDT of treated vs. untreated nodules was 189 days (range, 62-infinite) vs. 1153 days (range, 504-infinite), respectively. No patient progressed regionally or distantly, and there have been no cancer-related deaths. Due to cardiovascular events, two patients died and one remains on hospice. Median duration of AS for those still continuing computed tomography (CT) surveillance is 35.1 months. Conclusion Selected elderly patients with stage IA lung cancer and significant co-morbidities may undergo AS without detriment in outcome. Prospective AS studies are warranted.
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Affiliation(s)
- Hyunsoo J No
- Radiation Oncology, Larner College of Medicine at the University of Vermont, Burlington, USA
| | | | - David J Seward
- Pathology and Laboratory Medicine, Larner College of Medicine at the University of Vermont and the University of Vermont Health Network, Burlington, USA
| | - Nikoletta Sidiropoulos
- Pathology and Laboratory Medicine, Larner College of Medicine at the University of Vermont and the University of Vermont Health Network, Burlington, USA
| | - Havaleh M Gagne
- Radiation Oncology, University of Vermont Cancer Center, Burlington, USA
| | - Carl J Nelson
- Radiation Oncology, University of Vermont Cancer Center, Burlington, USA
| | - Garth W Garrison
- Pulmonology and Critical Care Medicine, University of Vermont Medical Center, Burlington, USA
| | - C Matthew Kinsey
- Pulmonary and Critical Care Medicine, University of Vermont Medical Center, Burlington, USA
| | - Steven H Lin
- Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
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20
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Chao HH, Valdes G, Luna JM, Heskel M, Berman AT, Solberg TD, Simone CB. Exploratory analysis using machine learning to predict for chest wall pain in patients with stage I non-small-cell lung cancer treated with stereotactic body radiation therapy. J Appl Clin Med Phys 2018; 19:539-546. [PMID: 29992732 PMCID: PMC6123157 DOI: 10.1002/acm2.12415] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 05/24/2018] [Accepted: 06/13/2018] [Indexed: 12/25/2022] Open
Abstract
Background and purpose Chest wall toxicity is observed after stereotactic body radiation therapy (SBRT) for peripherally located lung tumors. We utilize machine learning algorithms to identify toxicity predictors to develop dose–volume constraints. Materials and methods Twenty‐five patient, tumor, and dosimetric features were recorded for 197 consecutive patients with Stage I NSCLC treated with SBRT, 11 of whom (5.6%) developed CTCAEv4 grade ≥2 chest wall pain. Decision tree modeling was used to determine chest wall syndrome (CWS) thresholds for individual features. Significant features were determined using independent multivariate methods. These methods incorporate out‐of‐bag estimation using Random forests (RF) and bootstrapping (100 iterations) using decision trees. Results Univariate analysis identified rib dose to 1 cc < 4000 cGy (P = 0.01), chest wall dose to 30 cc < 1900 cGy (P = 0.035), rib Dmax < 5100 cGy (P = 0.05) and lung dose to 1000 cc < 70 cGy (P = 0.039) to be statistically significant thresholds for avoiding CWS. Subsequent multivariate analysis confirmed the importance of rib dose to 1 cc, chest wall dose to 30 cc, and rib Dmax. Using learning‐curve experiments, the dataset proved to be self‐consistent and provides a realistic model for CWS analysis. Conclusions Using machine learning algorithms in this first of its kind study, we identify robust features and cutoffs predictive for the rare clinical event of CWS. Additional data in planned subsequent multicenter studies will help increase the accuracy of multivariate analysis.
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Affiliation(s)
- Hann-Hsiang Chao
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - Gilmer Valdes
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA.,Department of Radiation Oncology, University of California - San Francisco, San Francisco, CA, USA
| | - Jose M Luna
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - Marina Heskel
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - Abigail T Berman
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - Timothy D Solberg
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA.,Department of Radiation Oncology, University of California - San Francisco, San Francisco, CA, USA
| | - Charles B Simone
- Department of Radiation Oncology, University of Maryland, School of Medicine, Baltimore, MD, USA
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21
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Case report of a dose-volume histogram analysis of rib fracture after accelerated partial breast irradiation: interim analysis of a Japanese prospective multi-institutional feasibility study. J Contemp Brachytherapy 2018; 10:274-278. [PMID: 30038649 PMCID: PMC6052388 DOI: 10.5114/jcb.2018.76983] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/22/2018] [Indexed: 01/15/2023] Open
Abstract
We initiated the first multi-institutional prospective study of accelerated partial breast irradiation for early breast cancer in Japan. Our early clinical results showed that the treatment methods were technically reproducible between institutions and showed excellent disease control at a median follow-up of 26 months in our previous report. At present, total 46 patients from six institutions underwent the treatment regimen from October 2009 to December 2011, and the median follow-up time was 60 months (range, 57-67 months). In 46 patients, we experienced one patient who had rib fracture as a late complication. The dose-volume histogram (DVH) result of this patient was analyzed. The D0.01cc, D0.1cc, and D1cc values of the patient were 913, 817, and 664 cGy per fraction, respectively. These values were the highest values in 46 patients. The average D0.01cc, D0.1cc, and D1cc values of the other 45 patients were 546, 500, and 419, respectively, cGy per fraction. From this result, DVH values showing high-dose irradiated volume (D0.01cc, D0.1cc, and D1cc) seem to be a good predictive factor of rib fracture for accelerated partial breast irradiation. However, further investigation is necessary because of the small number of patients investigated.
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22
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Weder W, Moghanaki D, Stiles B, Siva S, Rocco G. The great debate flashes: surgery versus stereotactic body radiotherapy as the primary treatment of early-stage lung cancer. Eur J Cardiothorac Surg 2017; 53:295-305. [DOI: 10.1093/ejcts/ezx410] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/23/2017] [Accepted: 10/28/2017] [Indexed: 12/25/2022] Open
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23
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Kim A, Lim-Reinders S, McCann C, Ahmad SB, Sahgal A, Lee J, Keller BM. Magnetic field dose effects on different radiation beam geometries for hypofractionated partial breast irradiation. J Appl Clin Med Phys 2017; 18:62-70. [PMID: 28901729 PMCID: PMC5689934 DOI: 10.1002/acm2.12182] [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: 02/21/2017] [Revised: 08/04/2017] [Accepted: 08/07/2017] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Hypofractionated partial breast irradiation (HPBI) involves treatment to the breast tumor using high doses per fraction. Recent advances in MRI-Linac solutions have potential in being applied to HPBI due to gains in the soft tissue contrast of MRI; however, there are potentially deleterious effects of the magnetic field on the dose distribution. The purpose of this work is to determine the effects of the magnetic field on the dose distribution for HPBI tumors using a tangential beam arrangement (TAN), 5-beam intensity-modulated radiation therapy (IMRT), and volumetric modulated arc therapy (VMAT). METHODS Five patients who have received HPBI were selected with two patients having bilateral disease resulting in a total of two tumors in this study. Six planning configurations were created using a treatment planning system capable of modeling magnetic field dose effects: TAN, IMRT and VMAT beam geometries, each of these optimized with and without a transverse magnetic field of 1.5 T. RESULTS The heart and lung doses were not statistically significant when comparing plan configurations. The magnetic field had a demonstrated effect on skin dose: for VMAT plans, the skin (defined to a depth of 3 mm) D1cc was elevated by +11% and the V30 by +146%; for IMRT plans, the skin D1cc was increased by +18% and the V30 by +149%. Increasing the number of beam angles (e.g., going from IMRT to VMAT) with the magnetic field on reduced the skin dose. CONCLUSION The impact of a magnetic field on HPBI dose distributions was analyzed. The heart and lung doses had clinically negligible effects caused by the magnetic field. The magnetic field increases the skin dose; however, this can be mitigated by increasing the number of beam angles.
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Affiliation(s)
- Anthony Kim
- Department of Medical Physics, Sunnybrook Health Sciences Centre/Odette Cancer Centre, Toronto, ON, Canada.,Faculty of Medicine, Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Stephanie Lim-Reinders
- Department of Medical Physics, Sunnybrook Health Sciences Centre/Odette Cancer Centre, Toronto, ON, Canada
| | - Claire McCann
- Department of Medical Physics, Sunnybrook Health Sciences Centre/Odette Cancer Centre, Toronto, ON, Canada.,Faculty of Medicine, Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Syed Bilal Ahmad
- Department of Medical Physics, Sunnybrook Health Sciences Centre/Odette Cancer Centre, Toronto, ON, Canada
| | - Arjun Sahgal
- Faculty of Medicine, Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada.,Department of Radiation Oncology, Sunnybrook Health Sciences Centre/Odette Cancer Centre, Toronto, ON, Canada
| | - Justin Lee
- Faculty of Medicine, Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada.,Department of Radiation Oncology, Sunnybrook Health Sciences Centre/Odette Cancer Centre, Toronto, ON, Canada
| | - Brian M Keller
- Department of Medical Physics, Sunnybrook Health Sciences Centre/Odette Cancer Centre, Toronto, ON, Canada.,Faculty of Medicine, Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
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Stereotactic Ablative Radiation Therapy for Pulmonary Metastases: Histology, Dose, and Indication Matter. Int J Radiat Oncol Biol Phys 2017; 98:419-427. [DOI: 10.1016/j.ijrobp.2017.02.093] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/22/2017] [Accepted: 02/21/2017] [Indexed: 12/25/2022]
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25
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Wijsman R, Braam PM, Bussink J. Radiation-induced rib fractures after stereotactic body radiation therapy: Predict to prevent? Radiother Oncol 2017; 123:173-175. [DOI: 10.1016/j.radonc.2017.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/09/2017] [Accepted: 03/10/2017] [Indexed: 12/23/2022]
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26
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Park Y, Kim HJ, Chang AR. Predictors of chest wall toxicity after stereotactic ablative radiotherapy using real-time tumor tracking for lung tumors. Radiat Oncol 2017; 12:66. [PMID: 28381302 PMCID: PMC5382431 DOI: 10.1186/s13014-017-0803-2] [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: 01/13/2017] [Accepted: 03/26/2017] [Indexed: 12/20/2022] Open
Abstract
Background To evaluate the incidence of chest wall toxicity after lung stereotactic ablative radiotherapy (SABR) and identify risk factors for the development of rib fracture. Methods Thirty-nine patients with 49 lesions underwent SABR for primary or metastatic lung tumors using Cyberknife® with tumor tracking systems. Patient characteristics, treatment factors and variables obtained from dose-volume histograms (DVHs) were analyzed to find the association with chest wall toxicity. Four-dimensional (4D) dose calculations were done to investigate the effect of respiratory motion on dose to the ribs. Results After follow-up of median 26.7 months (range: 8.4 – 80.0), 8 patients (20.5%) experienced rib fractures and among these patients, three (37.5%) had chest wall pain at 2–3 months after SABR. Median time to rib fracture was 13.4 months (range: 8.0 – 38.5) and the 2-year actuarial risk of rib fracture was 12.2%. Dose to the 4.6 cc of the ribs (D4.6cc) and rib volume received 160 Gy or more (V160) were significant predictor for rib fracture. No significant differences between three-dimensional (3D) and 4D dose calculations were found. Conclusions Parameters from DVH are useful in predicting the risk of chest wall toxicity after SABR for lung tumors. Efforts should be made to reduce the risk of the rib fracture after lung SABR.
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Affiliation(s)
- Younghee Park
- Department of Radiation Oncology/CyberKnife Center, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, Seoul, 140-743, Republic of Korea
| | - Hee Jung Kim
- Department of Radiation Oncology/CyberKnife Center, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, Seoul, 140-743, Republic of Korea
| | - Ah Ram Chang
- Department of Radiation Oncology/CyberKnife Center, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, Seoul, 140-743, Republic of Korea.
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Drazer MW, Salama JK, Hahn OM, Weichselbaum RR, Chmura SJ. Stereotactic body radiotherapy for oligometastatic breast cancer: a new standard of care, or a medical reversal in waiting? Expert Rev Anticancer Ther 2016; 16:625-32. [DOI: 10.1080/14737140.2016.1178577] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Dose-Response Model for Chest Wall Tolerance of Stereotactic Body Radiation Therapy. Semin Radiat Oncol 2016; 26:129-34. [DOI: 10.1016/j.semradonc.2015.11.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Chaudhuri AA, Binkley MS, Aggarwal S, Qian Y, Carter JN, Shah R, Loo BW. Severe Chest Wall Toxicity From Cryoablation in the Setting of Prior Stereotactic Ablative Radiotherapy. Cureus 2016; 8:e477. [PMID: 27004154 PMCID: PMC4780688 DOI: 10.7759/cureus.477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
We present the case of a 42-year-old woman with metastatic synovial sarcoma of parotid origin, treated definitively with chemoradiation, who subsequently developed oligometastatic disease limited to the lungs. She underwent multiple left and right lung wedge resections and left lower lobectomy, followed by right lower lobe stereotactic ablative radiotherapy (SABR), 54 Gy in three fractions to a right lower lobe lesion abutting the chest wall. Two years later, she was treated with cryoablation for a separate right upper lobe nodule abutting the chest wall. Two months later, she presented with acute shortness of breath, pleuritic chest pain, decreased peripheral blood O2 saturation, and productive cough. A computed tomography (CT) scan demonstrated severe chest wall necrosis in the area of recent cryoablation that, in retrospect, also received a significant radiation dose from her prior SABR. This case demonstrates that clinicians should exercise caution in using cryoablation when treating lung tumors abutting a previously irradiated chest wall. Note: Drs. Loo and Shah contributed equally as co-senior authors.
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Affiliation(s)
- Aadel A Chaudhuri
- Department of Radiation Oncology, Stanford University School of Medicine
| | - Michael S Binkley
- Department of Radiation Oncology, Stanford University School of Medicine
| | - Sonya Aggarwal
- Department of Radiation Oncology, Stanford University School of Medicine
| | - Yushen Qian
- Department of Radiation Oncology, Stanford University School of Medicine
| | - Justin N Carter
- Department of Radiation Oncology, Stanford University School of Medicine
| | - Rajesh Shah
- Department of Interventional Radiology, Stanford University School of Medicine
| | - Billy W Loo
- Department of Radiation Oncology, Stanford University School of Medicine ; Stanford Cancer Institute
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