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Xia Y, Lin M, Huang J, Fan L. Cardiovascular disease related death among patients with esophagus cancer: A population-based competing risk analysis. Front Oncol 2022; 12:976711. [PMID: 36185282 PMCID: PMC9522624 DOI: 10.3389/fonc.2022.976711] [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: 07/04/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
The proportion of non-cancer death in patients with esophagus cancer (EC) still increasing, especially cardiovascular disease (CVD) related death. The aim of this study was assess non-cancer causes of death and identified independent risk factors of CVD related death in EC patients. Patients diagnosed with EC were extracted from the Surveillance, Epidemiology, and End Result database (SEER) database for analysis. Standardized mortality rates (SMRs) for non-EC deaths were calculated, the risk of death were assessed and compared with US general population. Multivariate competitive risk analysis were performed to select independent risk factors for death from CVD in EC patients. A total of 43739 EC patients were enrolled and 35139 died during follow-up, of which 4248 died from non-cancer cause of death. The risk of non-cancer death in EC patients was 2.27-fold higher than in the general population (SMR=2.27; 95% CI, 2.20-2.34). CVD were the most important cause of non-cancer death in EC patients, accounting for 43.4% of non-cancer of deaths. Compare with the general population, EC patients have higher risk of death from disease of heart (SMR, 2.24; 95% CI, 2.13-2.35), pneumonia and influenza (SMR, 2.92; 95% CI, 2.50-3.39), septicemia (SMR, 5.01; 95% CI, 4.30-5.79), along with other causes. Patients with advanced age and patients who received radiotherapy has higher risk of death caused by CVD, patients with female sex, poor differentiated and undifferentiated, regional and distant stage, married, diagnosed between 2010-2016 has lower risk of CVD related death, compared with patients without any treatment measures, patients received chemotherapy alone has lower risk of death from CVD. Non-cancer cause of death has become an important cause of death in EC patients. Improving public awareness of the major risk factors for non-cancer death is beneficial to the prevention and treatment of malignant tumors.
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Affiliation(s)
| | | | - Jin Huang
- *Correspondence: Li Fan, ; Jin Huang,
| | - Li Fan
- *Correspondence: Li Fan, ; Jin Huang,
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2
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Lopez-Mattei JC, Yang EH, Ferencik M, Baldassarre LA, Dent S, Budoff MJ. Cardiac Computed Tomography in Cardio-Oncology: JACC: CardioOncology Primer. JACC CardioOncol 2021; 3:635-649. [PMID: 34988472 PMCID: PMC8702811 DOI: 10.1016/j.jaccao.2021.09.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 12/12/2022] Open
Abstract
Cancer patients and survivors have elevated cardiovascular risk when compared with noncancer patients. Cardio-oncology has emerged as a new subspecialty to comanage and address cardiovascular complications in cancer patients such as heart failure, atherosclerotic cardiovascular disease (ASCVD), valvular heart disease, pericardial disease, and arrhythmias. Cardiac computed tomography (CT) can be helpful in identifying both clinical and subclinical ASCVD in cancer patients and survivors. Radiation therapy treatment planning CT scans and cancer staging/re-staging imaging studies can quantify calcium scores which can identify pre-existing subclinical ASCVD. Cardiac CT can be helpful in the evaluation of cardiac tumors and pericardial diseases, especially in patients who cannot tolerate or have a contraindication to cardiac magnetic resonance. In this review, we describe the optimal utilization of cardiac CT in cancer patients, including risk assessment for ASCVD and identification of cancer treatment-related cardiovascular toxicity.
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Affiliation(s)
| | - Eric H. Yang
- UCLA Cardio-Oncology Program, Division of Cardiology, Department of Medicine, University of California at Los Angeles, Los Angeles, California, USA
| | - Maros Ferencik
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Lauren A. Baldassarre
- Section of Cardiovascular Medicine, Department of Medicine and Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Susan Dent
- Duke Cancer Institute, Department of Medicine, Duke University, Durham, North Carolina, USA
| | - Matthew J. Budoff
- Department of Medicine, Lundquist Institute at Harbor UCLA Medical Center, Torrance, California, USA
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3
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Bergom C, Bradley JA, Ng AK, Samson P, Robinson C, Lopez-Mattei J, Mitchell JD. Past, Present, and Future of Radiation-Induced Cardiotoxicity: Refinements in Targeting, Surveillance, and Risk Stratification. JACC CardioOncol 2021; 3:343-359. [PMID: 34604796 PMCID: PMC8463722 DOI: 10.1016/j.jaccao.2021.06.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 12/13/2022] Open
Abstract
Radiation therapy is an important component of cancer therapy for many malignancies. With improvements in cardiac-sparing techniques, radiation-induced cardiac dysfunction has decreased but remains a continued concern. In this review, we provide an overview of the evolution of radiotherapy techniques in thoracic cancers and associated reductions in cardiac risk. We also highlight data demonstrating that in some cases radiation doses to specific cardiac substructures correlate with cardiac toxicities and/or survival beyond mean heart dose alone. Advanced cardiac imaging, cardiovascular risk assessment, and potentially even biomarkers can help guide post-radiotherapy patient care. In addition, treatment of ventricular arrhythmias with the use of ablative radiotherapy may inform knowledge of radiation-induced cardiac dysfunction. Future efforts should explore further personalization of radiotherapy to minimize cardiac dysfunction by coupling knowledge derived from enhanced dosimetry to cardiac substructures, post-radiation regional dysfunction seen on advanced cardiac imaging, and more complete cardiac toxicity data.
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Key Words
- CAC, coronary artery calcium
- CAD, coronary artery disease
- CMRI, cardiac magnetic resonance imaging
- CT, computed tomography
- HL, Hodgkin lymphoma
- LAD, left anterior descending artery
- LV, left ventricular
- MHD, mean heart dose
- NSCLC, non–small cell lung cancer
- RICD, radiation-induced cardiovascular disease
- RT, radiation therapy
- SBRT, stereotactic body radiation therapy
- breast cancer
- cancer survivorship
- childhood cancer
- esophageal cancer
- imaging
- lung cancer
- lymphoma
- radiation physics
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Affiliation(s)
- Carmen Bergom
- Department of Radiation Oncology, Washington University, Saint Louis, Missouri, USA
- Cardio-Oncology Center of Excellence, Washington University, St. Louis, Missouri, USA
- Alvin J. Siteman Center, Washington University, St. Louis, Missouri, USA
| | - Julie A. Bradley
- Department of Radiation Oncology, University of Florida, Jacksonville, Florida, USA
| | - Andrea K. Ng
- Department of Radiation Oncology, Dana-Farber/Brigham and Women’s Cancer Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Pamela Samson
- Department of Radiation Oncology, Washington University, Saint Louis, Missouri, USA
- Alvin J. Siteman Center, Washington University, St. Louis, Missouri, USA
| | - Clifford Robinson
- Department of Radiation Oncology, Washington University, Saint Louis, Missouri, USA
- Alvin J. Siteman Center, Washington University, St. Louis, Missouri, USA
- Division of Cardiology, Department of Medicine, Washington University, St. Louis, Missouri, USA
| | - Juan Lopez-Mattei
- Departments of Cardiology and Thoracic Imaging, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Joshua D. Mitchell
- Cardio-Oncology Center of Excellence, Washington University, St. Louis, Missouri, USA
- Alvin J. Siteman Center, Washington University, St. Louis, Missouri, USA
- Division of Cardiology, Department of Medicine, Washington University, St. Louis, Missouri, USA
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Gergelis KR, Jethwa KR, Tryggestad EJ, Ashman JB, Haddock MG, Hallemeier CL. Proton beam radiotherapy for esophagus cancer: state of the art. J Thorac Dis 2020; 12:7002-7010. [PMID: 33282405 PMCID: PMC7711403 DOI: 10.21037/jtd-2019-cptn-06] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The majority of esophageal cancer patients are diagnosed with locoregionally confined disease, which is often amenable to curative intent therapy. Chemoradiotherapy (CRT) improves overall survival (OS) in stage II and III esophagus cancer in the neoadjuvant and definitive settings. Due to the close proximity of organs at risk (OARs), including lungs, heart, stomach, bowel, kidneys, and spinal cord, esophageal CRT can result in profound acute and late toxicities. Acute toxicities can include esophagitis, nausea, vomiting, fatigue, and cytopenias. Late complications may also occur months or years after completion of thoracic radiotherapy, including significant cardiac, pulmonary, liver, kidney, or bowel toxicities, which can be life-threatening or fatal. Photon-based radiotherapy exposes OARs to significant doses of radiation, whereas proton beam therapy (PBT) has unique physical properties, as it lacks an exit dose. This allows PBT to deliver, a more conformal dose to the target and minimize the volume of OARs exposed to radiation. This dosimetric advantage may portend an increased therapeutic ratio of CRT for esophagus cancer. The objective of this review is to discuss the evolution of photon and proton-based radiotherapy techniques, rationale, dosimetric and clinical studies comparing outcomes of photon- and proton-based techniques, ongoing prospective trials, and future directions of PBT as a means of reducing toxicity and improving oncologic outcomes for patients with esophagus cancer.
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Affiliation(s)
| | - Krishan R Jethwa
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT, USA
| | | | - Jonathan B Ashman
- Department of Radiation Oncology, Mayo Clinic, Phoenix/Scottsdale, AZ, USA
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5
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Soufer A, Liu C, Henry ML, Baldassarre LA. Nuclear cardiology in the context of multimodality imaging to detect cardiac toxicity from cancer therapeutics: Established and emerging methods. J Nucl Cardiol 2020; 27:1210-1224. [PMID: 30868378 DOI: 10.1007/s12350-019-01671-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 02/12/2019] [Indexed: 12/21/2022]
Abstract
The complexity of cancer therapies has vastly expanded in the last decade, along with type and severity of cardiac toxicities associated with these treatments. Prevention of pre-clinical cardiotoxicity may improve cardiovascular outcomes and circumvent the decision to place life-sustaining chemotherapeutic agents on hold, making the early detection of cancer therapeutic related cardiac toxicity with non-invasive imaging essential to the care of these patients. There are several established methods of cardiac imaging in the areas of nuclear cardiology, echocardiography, computed tomography, and cardiac magnetic resonance imaging that are used to assess for cardiovascular toxicity of cancer treatments, with several methods under development. The following review will provide an overview of current and emerging imaging techniques in these areas.
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Affiliation(s)
- Aaron Soufer
- Department of Cardiovascular Medicine, Yale University School of Medicine, New Haven, CT, USA.
| | - Chi Liu
- Department of Radiology and Biomedical Engineering, Yale University School of Medicine, New Haven, CT, USA
| | - Mariana L Henry
- Department of Cardiovascular Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Lauren A Baldassarre
- Department of Cardiovascular Medicine, Yale University School of Medicine, New Haven, CT, USA
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Cardiovascular Complications Associated with Mediastinal Radiation. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2019; 21:31. [DOI: 10.1007/s11936-019-0737-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Kim SJ, Lee JW, Kang MK, Kim JC, Lee JE, Park SH, Kim MY, Lee SJ, Moon SH, Ko BS. Evaluation of the hybrid-dynamic conformal arc therapy technique for radiotherapy of lung cancer. Radiat Oncol J 2018; 36:241-247. [PMID: 30309216 PMCID: PMC6226139 DOI: 10.3857/roj.2018.00171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 08/16/2018] [Indexed: 11/25/2022] Open
Abstract
Purpose A hybrid-dynamic conformal arc therapy (HDCAT) technique consisting of a single half-rotated dynamic conformal arc beam and static field-in-field beams in two directions was designed and evaluated in terms of dosimetric benefits for radiotherapy of lung cancer. Materials and Methods This planning study was performed in 20 lung cancer cases treated with the VERO system (BrainLAB AG, Feldkirchen, Germany). Dosimetric parameters of HDCAT plans were compared with those of three-dimensional conformal radiotherapy (3D-CRT) plans in terms of target volume coverage, dose conformity, and sparing of organs at risk. Results HDCAT showed better dose conformity compared with 3D-CRT (conformity index: 0.74 ± 0.06 vs. 0.62 ± 0.06, p < 0.001). HDCAT significantly reduced the lung volume receiving more than 20 Gy (V20: 21.4% ± 8.2% vs. 24.5% ± 8.8%, p < 0.001; V30: 14.2% ± 6.1% vs. 15.1% ± 6.4%, p = 0.02; V40: 8.8% ± 3.9% vs. 10.3% ± 4.5%, p < 0.001; and V50: 5.7% ± 2.7% vs. 7.1% ± 3.2%, p < 0.001), V40 and V50 of the heart (V40: 5.2 ± 3.9 Gy vs. 7.6 ± 5.5 Gy, p < 0.001; V50: 1.8 ± 1.6 Gy vs. 3.1 ± 2.8 Gy, p = 0.001), and the maximum spinal cord dose (34.8 ± 9.4 Gy vs. 42.5 ± 7.8 Gy, p < 0.001) compared with 3D-CRT. conclusions HDCAT could achieve highly conformal target coverage and reduce the doses to critical organs such as the lung, heart, and spinal cord compared to 3D-CRT for the treatment of lung cancer patients.
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Affiliation(s)
- Sung Joon Kim
- Department of Radiation Oncology, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Jeong Won Lee
- Department of Radiation Oncology, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Min Kyu Kang
- Department of Radiation Oncology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jae-Chul Kim
- Department of Radiation Oncology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jeong Eun Lee
- Department of Radiation Oncology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Shin-Hyung Park
- Department of Radiation Oncology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Mi Young Kim
- Department of Radiation Oncology, Kyungpook National University Hospital, Daegu, Korea
| | - Seoung-Jun Lee
- Department of Radiation Oncology, Kyungpook National University Hospital, Daegu, Korea
| | - Soo-Ho Moon
- Department of Radiation Oncology, Kyungpook National University Hospital, Daegu, Korea
| | - Byoung-Soo Ko
- Department of Radiation Oncology, Kyungpook National University Chilgok Hospital, Daegu, Korea
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8
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Ming X, Feng Y, Yang C, Wang W, Wang P, Deng J. Radiation-induced heart disease in lung cancer radiotherapy: A dosimetric update. Medicine (Baltimore) 2016; 95:e5051. [PMID: 27741117 PMCID: PMC5072944 DOI: 10.1097/md.0000000000005051] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Radiation-induced heart disease (RIHD), which affects the patients' prognosis with both acute and late side effects, has been published extensively in the radiotherapy of breast cancer, lymphoma and other benign diseases. Studies on RIHD in lung cancer radiotherapy, however, are less extensive and clear even though the patients with lung cancer are delivered with higher doses to the heart during radiation treatment. METHODS In this article, after extensive literature search and analysis, we reviewed the current evidence on RIHD in lung cancer patients after their radiation treatments and investigated the potential risk factors for RIHD as compared to other types of cancers. RESULT Cardiac toxicity has been found highly relevant in lung cancer radiotherapy. So far, the crude incidence of cardiac complications in the lung cancer patients after radiotherapy has been up to 33%. CONCLUSION The dose to the heart, the lobar location of tumor, the treatment modality, the history of heart and pulmonary disease and smoking were considered as potential risk factors for RIHD in lung cancer radiotherapy. As treatment techniques improve over the time with better prognosis for lung cancer survivors, an improved prediction model can be established to further reduce the cardiac toxicity in lung cancer radiotherapy.
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Affiliation(s)
- Xin Ming
- Department of Biomedical Engineering, Tianjin University
| | - Yuanming Feng
- Department of Biomedical Engineering, Tianjin University
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Chengwen Yang
- Department of Biomedical Engineering, Tianjin University
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Wei Wang
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Ping Wang
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Jun Deng
- Department of Therapeutic Radiology, Yale University, New Haven, CT, USA
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9
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Gharzai L, Verma V, Denniston KA, Bhirud AR, Bennion NR, Lin C. Radiation Therapy and Cardiac Death in Long-Term Survivors of Esophageal Cancer: An Analysis of the Surveillance, Epidemiology, and End Result Database. PLoS One 2016; 11:e0158916. [PMID: 27428362 PMCID: PMC4948887 DOI: 10.1371/journal.pone.0158916] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 06/23/2016] [Indexed: 12/21/2022] Open
Abstract
Objective Radiation therapy (RT) for esophageal cancer often results in unintended radiation doses delivered to the heart owing to anatomic proximity. Using the Surveillance, Epidemiology, and End Results (SEER) database, we examined late cardiac death in survivors of esophageal cancer that had or had not received RT. Methods 5,630 patients were identified that were diagnosed with esophageal squamous cell carcinoma (SCC) or adenocarcinoma (AC) from 1973–2012, who were followed for at least 5 years after therapy. Examined risk factors for cardiac death included age (≤55/56-65/66-75/>75), gender, race (white/non-white), stage (local/regional/distant), histology (SCC/AC), esophageal location (<18cm/18-24cm/25-32cm/33-40cm from incisors), diagnosis year (1973-1992/1993-2002/2003-2012), and receipt of surgery and/or RT. Time to cardiac death was evaluated using the Kaplan-Meier method. A Cox model was used to evaluate risk factors for cardiac death in propensity score matched data. Results Patients who received RT were younger, diagnosed more recently, had more advanced disease, SCC histology, and no surgery. The RT group had higher risk of cardiac death than the no-RT group (log-rank p<0.0001). The median time to cardiac death in the RT group was 289 months (95% CI, 255–367) and was not reached in the no-RT group. The probability of cardiac death increased with age and decreased with diagnosis year, and this trend was more pronounced in the RT group. Multivariate analysis found RT to be associated with higher probability of cardiac death (OR 1.23, 95% CI 1.03–1.47, HR 1.961, 95% CI 1.466–2.624). Lower esophageal subsite (33–40 cm) was also associated with a higher risk of cardiac death. Other variables were not associated with cardiac death. Conclusions Recognizing the limitations of a SEER analysis including lack of comorbidity accountability, these data should prompt more definitive study as to whether a possible associative effect of RT on cardiac death could potentially be a causative effect.
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Affiliation(s)
- Laila Gharzai
- College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States of America
- * E-mail:
| | - Vivek Verma
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, United States of America
| | - Kyle A. Denniston
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, United States of America
| | - Abhijeet R. Bhirud
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, United States of America
| | - Nathan R. Bennion
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, United States of America
| | - Chi Lin
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, United States of America
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Chuong MD, Hallemeier CL, Jabbour SK, Yu J, Badiyan S, Merrell KW, Mishra MV, Li H, Verma V, Lin SH. Improving Outcomes for Esophageal Cancer using Proton Beam Therapy. Int J Radiat Oncol Biol Phys 2016; 95:488-497. [PMID: 27084662 PMCID: PMC10862360 DOI: 10.1016/j.ijrobp.2015.11.043] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/25/2015] [Accepted: 11/30/2015] [Indexed: 12/15/2022]
Abstract
Radiation therapy (RT) plays an essential role in the management of esophageal cancer. Because the esophagus is a centrally located thoracic structure there is a need to balance the delivery of appropriately high dose to the target while minimizing dose to nearby critical structures. Radiation dose received by these critical structures, especially the heart and lungs, may lead to clinically significant toxicities, including pneumonitis, pericarditis, and myocardial infarction. Although technological advancements in photon RT delivery like intensity modulated RT have decreased the risk of such toxicities, a growing body of evidence indicates that further risk reductions are achieved with proton beam therapy (PBT). Herein we review the published dosimetric and clinical PBT literature for esophageal cancer, including motion management considerations, the potential for reirradiation, radiation dose escalation, and ongoing esophageal PBT clinical trials. We also consider the potential cost-effectiveness of PBT relative to photon RT.
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Affiliation(s)
- Michael D Chuong
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, Maryland
| | | | - Salma K Jabbour
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
| | - Jen Yu
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, Maryland
| | - Shahed Badiyan
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, Maryland
| | | | - Mark V Mishra
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, Maryland
| | - Heng Li
- Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Vivek Verma
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Steven H Lin
- Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas.
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11
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Symptomatic radiation-induced cardiac disease in long-term survivors of esophageal cancer. Strahlenther Onkol 2016; 192:359-67. [PMID: 26884226 DOI: 10.1007/s00066-016-0956-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 02/03/2016] [Indexed: 12/25/2022]
Abstract
PURPOSE To evaluate clinical and dosimetric factors retrospectively affecting the risk of symptomatic cardiac disease (SCD) in esophageal cancer patients treated with radiotherapy. PATIENTS AND METHODS A total of 343 patients with newly diagnosed esophageal cancer were managed with concurrent chemoradiotherapy or radiotherapy alone. Of these, 58 patients were followed at our hospital for at least 4 years. Median clinical follow-up was 79 months. Cardiac toxicity was determined by Common Terminology Criteria for Adverse Events (CTCAE) v. 4.0. The maximum and mean doses to the heart and percentage of the volume were calculated from the dose-volume histograms. RESULTS SCD manifested in 11 patients. The heart diseases included three pericardial effusions, one pericardial effusion with valvular disease and paroxysmal atrial tachycardia, three atrial fibrillations, one sinus tachycardia, one coronary artery disease, one chest pain with strongly suspected coronary artery disease, and one congestive heart failure. The actual incidence of SCD was 13.8 % at 5 years. Univariate and multivariate analyses of continuous variables revealed that the risk of developing an SCD depended on the volume of the heart receiving a dose greater than 45 Gy (V45), 50 Gy (V50), and 55 Gy (V55). No other clinical factors were found to influence the risk of SCD. For V45, V50, and V55, the lowest significant cutoff values were 15, 10, and 5 %, respectively. CONCLUSION High-dose and large-volume irradiation of the heart increased the risk of SCD in long-term survivors. Using modern radiotherapy techniques, it is important to minimize the heart dose-volume parameters without reducing the tumor dose.
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Lin SH, Zhang N, Godby J, Wang J, Marsh GD, Liao Z, Komaki R, Ho L, Hofstetter WL, Swisher SG, Mehran RJ, Buchholz TA, Elting LS, Giordano SH. Radiation modality use and cardiopulmonary mortality risk in elderly patients with esophageal cancer. Cancer 2015; 122:917-28. [PMID: 26716915 DOI: 10.1002/cncr.29857] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 11/07/2015] [Accepted: 12/01/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND It is currently unclear whether the superior normal organ-sparing effect of intensity-modulated radiotherapy (IMRT) compared with 3-dimensional radiotherapy (3D) has a clinical impact on survival and cardiopulmonary mortality in patients with esophageal cancer (EC). METHODS The authors identified 2553 patients aged > 65 years from the Surveillance, Epidemiology, and End Results (SEER)-Medicare and Texas Cancer Registry-Medicare databases who had nonmetastatic EC diagnosed between 2002 and 2009 and were treated with either 3D (2240 patients) or IMRT (313 patients) within 6 months of diagnosis. The outcomes of the 2 cohorts were compared using inverse probability of treatment weighting adjustment. RESULTS Except for marital status, year of diagnosis, and SEER region, both radiation cohorts were well balanced with regard to various patient, tumor, and treatment characteristics, including the use of IMRT versus 3D in urban/metropolitan or rural areas. IMRT use increased from 2.6% in 2002 to 30% in 2009, whereas the use of 3D decreased from 97.4% in 2002 to 70% in 2009. On propensity score inverse probability of treatment weighting-adjusted multivariate analysis, IMRT was not found to be associated with EC-specific mortality (hazard ratio [HR], 0.93; 95% confidence interval [95% CI], 0.80-1.10) or pulmonary mortality (HR, 1.11; 95% CI, 0.37-3.36), but was significantly associated with lower all-cause mortality (HR, 0.83; 95% CI, 0.72-0.95), cardiac mortality (HR, 0.18; 95% CI, 0.06-0.54), and other-cause mortality (HR, 0.54; 95% CI, 0.35-0.84). Similar associations were noted after adjusting for the type of chemotherapy, physician experience, and sensitivity analysis removing hybrid radiation claims. CONCLUSIONS In this population-based analysis, the use of IMRT was found to be significantly associated with lower all-cause mortality, cardiac mortality, and other-cause mortality in patients with EC.
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Affiliation(s)
- Steven H Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ning Zhang
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Joy Godby
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jingya Wang
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Gary D Marsh
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Zhongxing Liao
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ritsuko Komaki
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Linus Ho
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Wayne L Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Stephen G Swisher
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Reza J Mehran
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Thomas A Buchholz
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Linda S Elting
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sharon H Giordano
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, Texas
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Ming X, Feng Y, Liu H, Zhang Y, Zhou L, Deng J. Cardiac Exposure in the Dynamic Conformal Arc Therapy, Intensity-Modulated Radiotherapy and Volumetric Modulated Arc Therapy of Lung Cancer. PLoS One 2015; 10:e0144211. [PMID: 26630566 PMCID: PMC4667972 DOI: 10.1371/journal.pone.0144211] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 11/13/2015] [Indexed: 02/05/2023] Open
Abstract
Purpose To retrospectively evaluate the cardiac exposure in three cohorts of lung cancer patients treated with dynamic conformal arc therapy (DCAT), intensity-modulated radiotherapy (IMRT), or volumetric modulated arc therapy (VMAT) at our institution in the past seven years. Methods and Materials A total of 140 lung cancer patients were included in this institutional review board approved study: 25 treated with DCAT, 70 with IMRT and 45 with VMAT. All plans were generated in a same commercial treatment planning system and have been clinically accepted and delivered. The dose distribution to the heart and the effects of tumor laterality, the irradiated heart volume and the beam-to-heart distance on the cardiac exposure were investigated. Results The mean dose to the heart among all 140 plans was 4.5 Gy. Specifically, the heart received on average 2.3, 5.2 and 4.6 Gy in the DCAT, IMRT and VMAT plans, respectively. The mean heart doses for the left and right lung tumors were 4.1 and 4.8 Gy, respectively. No patients died with evidence of cardiac disease. Three patients (2%) with preexisting cardiac condition developed cardiac disease after treatment. Furthermore, the cardiac exposure was found to increase linearly with the irradiated heart volume while decreasing exponentially with the beam-to-heart distance. Conclusions Compared to old technologies for lung cancer treatment, modern radiotherapy treatment modalities demonstrated better heart sparing. But the heart dose in lung cancer radiotherapy is still higher than that in the radiotherapy of breast cancer and Hodgkin’s disease where cardiac complications have been extensively studied. With strong correlations of mean heart dose with beam-to-heart distance and irradiated heart volume, cautions should be exercised to avoid long-term cardiac toxicity in the lung cancer patients undergoing radiotherapy.
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Affiliation(s)
- Xin Ming
- Department of Biomedical Engineering, Tianjin University, Tianjin, China
- Department of Therapeutic Radiology, Yale University, New Haven, CT, United States of America
| | - Yuanming Feng
- Department of Biomedical Engineering, Tianjin University, Tianjin, China
| | - Huan Liu
- Department of Therapeutic Radiology, Yale-New Haven Hospital, New Haven, CT, United States of America
| | - Ying Zhang
- Department of Biomedical Engineering, Tianjin University, Tianjin, China
- Department of Therapeutic Radiology, Yale University, New Haven, CT, United States of America
| | - Li Zhou
- Center for Radiation Physics and Technology, West China Hospital Cancer Center, Sichuan University, Chengdu, China
| | - Jun Deng
- Department of Therapeutic Radiology, Yale University, New Haven, CT, United States of America
- Department of Therapeutic Radiology, Yale-New Haven Hospital, New Haven, CT, United States of America
- * E-mail:
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Frandsen J, Boothe D, Gaffney DK, Wilson BD, Lloyd S. Increased risk of death due to heart disease after radiotherapy for esophageal cancer. J Gastrointest Oncol 2015; 6:516-23. [PMID: 26487946 DOI: 10.3978/j.issn.2078-6891.2015.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE To evaluate the risk of heart disease related death (HDRD) following radiation therapy (RT) for esophageal cancer (EC). METHODS Using the Surveillance, Epidemiology, and End Results (SEER) database, two cohorts of patients with EC were created: (I) patients who received RT with their initial therapy; and (II) those who did not. Heart disease specific survival (HDSS) was analyzed using Kaplan-Meier methods. Cox proportional-hazards regression methods were used for univariate and multivariate analyses. RESULTS We identified 40,778 patients with EC. A total of 26,377 patients received RT and 14,401 did not. HDSS analysis revealed increased risk of HDRD in those receiving RT (P<0.05), with an absolute risk of HDRD of 2.8%, 5.3% and 9.4% at 5-, 10- and 20-year, respectively. Log rank test of HDSS revealed the risk of HDRD became significant at 8 months (P<0.05). The following were associated with HDRD: RT, age, race, stage at presentation, time period of diagnosis, and known comorbid condition keeping one from esophagectomy. On multivariate analysis, RT remained predictive of HDRD [hazard ratio (HR) 1.46, P<0.05]. When considering only candidates for definitive therapy, RT remained predictive of HDRD on univariate (HR 1.53, P<0.0001) and multivariate (HR 1.62, P<0.0001) analyses. CONCLUSIONS The use of RT leads to increased risk of HDRD that is detectable as early as eight months from diagnosis. More research is needed to define optimal dose volume parameters to prevent cardiac death. Consideration should be given to this risk in relation to prognosis and the expected benefits of RT.
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Affiliation(s)
- Jonathan Frandsen
- 1 Radiation Oncology Department, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA ; 2 Division of Cardiology, University of Utah, University Hospital, Salt Lake City, UT 84112, USA
| | - Dustin Boothe
- 1 Radiation Oncology Department, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA ; 2 Division of Cardiology, University of Utah, University Hospital, Salt Lake City, UT 84112, USA
| | - David K Gaffney
- 1 Radiation Oncology Department, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA ; 2 Division of Cardiology, University of Utah, University Hospital, Salt Lake City, UT 84112, USA
| | - Brent D Wilson
- 1 Radiation Oncology Department, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA ; 2 Division of Cardiology, University of Utah, University Hospital, Salt Lake City, UT 84112, USA
| | - Shane Lloyd
- 1 Radiation Oncology Department, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA ; 2 Division of Cardiology, University of Utah, University Hospital, Salt Lake City, UT 84112, USA
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15
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Sculier J, Botta I, Bucalau A, Compagnie M, Eskenazi A, Fischler R, Gorham J, Mans L, Rozen L, Speybrouck S, Wang X, Meert A, Berghmans T. Medical anticancer treatment of lung cancer associated with comorbidities: A review. Lung Cancer 2015; 87:241-8. [DOI: 10.1016/j.lungcan.2015.01.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 01/09/2015] [Indexed: 12/26/2022]
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Beukema JC, van Luijk P, Widder J, Langendijk JA, Muijs CT. Is cardiac toxicity a relevant issue in the radiation treatment of esophageal cancer? Radiother Oncol 2014; 114:85-90. [PMID: 25554226 DOI: 10.1016/j.radonc.2014.11.037] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 11/04/2014] [Accepted: 11/23/2014] [Indexed: 01/22/2023]
Abstract
PURPOSE In recent years several papers have been published on radiation-induced cardiac toxicity, especially in breast cancer patients. However, in esophageal cancer patients the radiation dose to the heart is usually markedly higher. To determine whether radiation-induced cardiac toxicity is also a relevant issue for this group, we conducted a review of the current literature. METHODS A literature search was performed in Medline for papers concerning cardiac toxicity in esophageal cancer patients treated with radiotherapy with or without chemotherapy. RESULTS The overall crude incidence of symptomatic cardiac toxicity was as high as 10.8%. Toxicities corresponded with several dose-volume parameters of the heart. The most frequently reported complications were pericardial effusion, ischemic heart disease and heart failure. CONCLUSION Cardiac toxicity is a relevant issue in the treatment of esophageal cancer. However, valid Normal Tissue Complication Probability models for esophageal cancer are not available at present.
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Affiliation(s)
- Jannet C Beukema
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - Peter van Luijk
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Joachim Widder
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Johannes A Langendijk
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Christina T Muijs
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Lancellotti P, Nkomo VT, Badano LP, Bergler-Klein J, Bogaert J, Davin L, Cosyns B, Coucke P, Dulgheru R, Edvardsen T, Gaemperli O, Galderisi M, Griffin B, Heidenreich PA, Nieman K, Plana JC, Port SC, Scherrer-Crosbie M, Schwartz RG, Sebag IA, Voigt JU, Wann S, Yang PC. Expert consensus for multi-modality imaging evaluation of cardiovascular complications of radiotherapy in adults: a report from the European Association of Cardiovascular Imaging and the American Society of Echocardiography. Eur Heart J Cardiovasc Imaging 2014; 14:721-40. [PMID: 23847385 DOI: 10.1093/ehjci/jet123] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cardiac toxicity is one of the most concerning side effects of anti-cancer therapy. The gain in life expectancy obtained with anti-cancer therapy can be compromised by increased morbidity and mortality associated with its cardiac complications. While radiosensitivity of the heart was initially recognized only in the early 1970s, the heart is regarded in the current era as one of the most critical dose-limiting organs in radiotherapy. Several clinical studies have identified adverse clinical consequences of radiation-induced heart disease (RIHD) on the outcome of long-term cancer survivors. A comprehensive review of potential cardiac complications related to radiotherapy is warranted. An evidence-based review of several imaging approaches used to detect, evaluate, and monitor RIHD is discussed. Recommendations for the early identification and monitoring of cardiovascular complications of radiotherapy by cardiac imaging are also proposed.
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Affiliation(s)
- Patrizio Lancellotti
- Department of Cardiology, GIGA Cardiovascular Sciences, Heart Valve Clinic, University of Liège Hospital, CHU du Sart-Tilman, Liège 4000, Belgium.
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Lancellotti P, Nkomo VT, Badano LP, Bergler-Klein J, Bergler J, Bogaert J, Davin L, Cosyns B, Coucke P, Dulgheru R, Edvardsen T, Gaemperli O, Galderisi M, Griffin B, Heidenreich PA, Nieman K, Plana JC, Port SC, Scherrer-Crosbie M, Schwartz RG, Sebag IA, Voigt JU, Wann S, Yang PC. Expert consensus for multi-modality imaging evaluation of cardiovascular complications of radiotherapy in adults: a report from the European Association of Cardiovascular Imaging and the American Society of Echocardiography. J Am Soc Echocardiogr 2013; 26:1013-32. [PMID: 23998694 DOI: 10.1016/j.echo.2013.07.005] [Citation(s) in RCA: 162] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cardiac toxicity is one of the most concerning side effects of anti-cancer therapy. The gain in life expectancy obtained with anti-cancer therapy can be compromised by increased morbidity and mortality associated with its cardiac complications. While radiosensitivity of the heart was initially recognized only in the early 1970s, the heart is regarded in the current era as one of the most critical dose-limiting organs in radiotherapy. Several clinical studies have identified adverse clinical consequences of radiation-induced heart disease (RIHD) on the outcome of long-term cancer survivors. A comprehensive review of potential cardiac complications related to radiotherapy is warranted. An evidence-based review of several imaging approaches used to detect, evaluate, and monitor RIHD is discussed. Recommendations for the early identification and monitoring of cardiovascular complications of radiotherapy by cardiac imaging are also proposed.
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Affiliation(s)
- Patrizio Lancellotti
- Department of Cardiology, GIGA Cardiovascular Sciences, Heart Valve Clinic, University of Liège Hospital, CHU du Sart-Tilman, Liège 4000, Belgium.
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Steingart RM, Yadav N, Manrique C, Carver JR, Liu J. Cancer Survivorship: Cardiotoxic Therapy in the Adult Cancer Patient; Cardiac Outcomes With Recommendations for Patient Management. Semin Oncol 2013; 40:690-708. [DOI: 10.1053/j.seminoncol.2013.09.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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20
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Comparison of heart and coronary artery doses associated with intensity-modulated radiotherapy versus three-dimensional conformal radiotherapy for distal esophageal cancer. Int J Radiat Oncol Biol Phys 2012; 83:1580-6. [PMID: 22284687 DOI: 10.1016/j.ijrobp.2011.10.053] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 10/20/2011] [Accepted: 10/25/2011] [Indexed: 12/21/2022]
Abstract
PURPOSE To compare heart and coronary artery radiation exposure using intensity-modulated radiotherapy (IMRT) vs. four-field three-dimensional conformal radiotherapy (3D-CRT) treatment plans for patients with distal esophageal cancer undergoing chemoradiation. METHODS AND MATERIALS Nineteen patients with distal esophageal cancers treated with IMRT from March 2007 to May 2008 were identified. All patients were treated to 50.4 Gy with five-field IMRT plans. Theoretical 3D-CRT plans with four-field beam arrangements were generated. Dose-volume histograms of the planning target volume, heart, right coronary artery, left coronary artery, and other critical normal tissues were compared between the IMRT and 3D-CRT plans, and selected parameters were statistically evaluated using the Wilcoxon rank-sum test. RESULTS Intensity-modulated radiotherapy treatment planning showed significant reduction (p < 0.05) in heart dose over 3D-CRT as assessed by average mean dose (22.9 vs. 28.2 Gy) and V30 (24.8% vs. 61.0%). There was also significant sparing of the right coronary artery (average mean dose, 23.8 Gy vs. 35.5 Gy), whereas the left coronary artery showed no significant improvement (mean dose, 11.2 Gy vs. 9.2 Gy), p = 0.11. There was no significant difference in percentage of total lung volume receiving at least 10, 15, or 20 Gy or in the mean lung dose between the planning methods. There were also no significant differences observed for the kidneys, liver, stomach, or spinal cord. Intensity-modulated radiotherapy achieved a significant improvement in target conformity as measured by the conformality index (ratio of total volume receiving 95% of prescription dose to planning target volume receiving 95% of prescription dose), with the mean conformality index reduced from 1.56 to 1.30 using IMRT. CONCLUSIONS Treatment of patients with distal esophageal cancer using IMRT significantly decreases the exposure of the heart and right coronary artery when compared with 3D-CRT. Long-term studies are necessary to determine how this will impact on development of coronary artery disease and other cardiac complications.
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Patient Selection according to General Condition and Associated Disease. Updates Surg 2012. [DOI: 10.1007/978-88-470-2330-7_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Nguyen NP, Krafft SP, Vinh-Hung V, Vos P, Almeida F, Jang S, Ceizyk M, Desai A, Davis R, Hamilton R, Modarresifar H, Abraham D, Smith-Raymond L. Feasibility of tomotherapy to reduce normal lung and cardiac toxicity for distal esophageal cancer compared to three-dimensional radiotherapy. Radiother Oncol 2011; 101:438-42. [PMID: 21908064 DOI: 10.1016/j.radonc.2011.07.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2010] [Revised: 06/16/2011] [Accepted: 07/24/2011] [Indexed: 11/17/2022]
Abstract
PURPOSE To compare the effectiveness of tomotherapy and three-dimensional (3D) conformal radiotherapy to spare normal critical structures (spinal cord, lungs, and ventricles) from excessive radiation in patients with distal esophageal cancers. MATERIALS AND METHODS A retrospective dosimetric study of nine patients who had advanced gastro-esophageal (GE) junction cancer (7) or thoracic esophageal cancer (2) extending into the distal esophagus. Two plans were created for each of the patients. A three-dimensional plan was constructed with either three (anteroposterior, right posterior oblique, and left posterior oblique) or four (right anterior oblique, left anterior oblique, right posterior oblique, and left posterior oblique) fields. The second plan was for tomotherapy. Doses were 45 Gy to the PTV with an integrated boost of 5 Gy for tomotherapy. RESULTS Mean lung dose was respectively 7.4 and 11.8 Gy (p=0.004) for tomotherapy and 3D plans. Corresponding values were 12.4 and 18.3 Gy (p=0.006) for cardiac ventricles. Maximum spinal cord dose was respectively 31.3 and 37.4 Gy (p < 0.007) for tomotherapy and 3D plans. Homogeneity index was two for both groups. CONCLUSIONS Compared to 3D conformal radiotherapy, tomotherapy decreased significantly the amount of normal tissue irradiated and may reduce treatment toxicity for possible dose escalation in future prospective studies.
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Affiliation(s)
- Nam P Nguyen
- Department of Radiation Oncology, University of Arizona, Tucson, AZ 85724-5081, USA.
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Hawkins MA, Bedford JL, Warrington AP, Tait DM. Volumetric modulated arc therapy planning for distal oesophageal malignancies. Br J Radiol 2011; 85:44-52. [PMID: 21427179 DOI: 10.1259/bjr/25428720] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES Volumetric modulated arc therapy (VMAT) is a novel form of intensity-modulated radiation therapy that allows the radiation dose to be delivered in a single gantry rotation using conformal or modulated fields. The capability of VMAT to reduce heart and cord dose, while maintaining lung receiving 20 Gy <20%, was evaluated for chemoradiation for oesophageal cancer. METHODS An optimised forward-planned four-field arrangement was compared with inverse-planned coplanar VMAT arcs with 35 control points for 10 patients with lower gastro-oesophageal tumours prescribed 54 Gy in 30 fractions. Conformal (cARC) and intensity-modulated (VMATi) arcs were considered. Plans were assessed and compared using the planning target volume (PTV) irradiated to 95% of the prescription dose (V95), volumes of lung irradiated to 20 Gy (V20), heart irradiated to 30 Gy (V30), spinal cord maximum dose and van't Riet conformation number (CN). The monitor units per fraction and delivery time were recorded for a single representative plan. RESULTS VMATi provided a significant reduction in the heart V30 (31% vs 55%; p=0.02) with better CN (0.72 vs 0.65; p=0.01) than the conformal plan. The treatment delivery was 1 min 28 s for VMAT compared with 3 min 15 s. CONCLUSION For similar PTV coverage, VMATi delivers a lower dose to organs at risk than conformal plans in a shorter time, and this has warranted clinical implementation.
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Affiliation(s)
- M A Hawkins
- Department of Clinical Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK.
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Yusuf SW, Sami S, Daher IN. Radiation-induced heart disease: a clinical update. Cardiol Res Pract 2011; 2011:317659. [PMID: 21403872 PMCID: PMC3051159 DOI: 10.4061/2011/317659] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Accepted: 12/15/2010] [Indexed: 01/28/2023] Open
Abstract
Cardiovascular diseases and cancer are the two leading causes of morbidity and mortality worldwide. Improvement in cancer therapy has led to increasing number of cancer survivors, some of whom may suffer from adverse cardiovascular effects of radiation therapy. Longterm followup is essential, as the cardiac complication may manifest years after completion of radiation therapy. In this paper, we have discussed the cardiovascular effects of radiation therapy.
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Affiliation(s)
- Syed Wamique Yusuf
- Department of Cardiology, University of Texas MD Anderson Cancer Center, Unit 1451, Houston, TX 77030, USA
| | - Shehzad Sami
- Department of Cardiology, University of Texas MD Anderson Cancer Center, Unit 1451, Houston, TX 77030, USA
| | - Iyad N. Daher
- Department of Cardiology, University of Texas MD Anderson Cancer Center, Unit 1451, Houston, TX 77030, USA
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