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Bonanno L, Attili I, Pavan A, Sepulcri M, Pasello G, Rea F, Guarneri V, Conte P. Treatment strategies for locally advanced non-small cell lung cancer in elderly patients: Translating scientific evidence into clinical practice. Crit Rev Oncol Hematol 2021; 163:103378. [PMID: 34087343 DOI: 10.1016/j.critrevonc.2021.103378] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 02/19/2021] [Accepted: 05/29/2021] [Indexed: 12/20/2022] Open
Abstract
Treatment of locally advanced NSCLC (LA-NSCLC) is focused on multimodal strategy, including chemotherapy and radiotherapy (in combination or as alternative treatments), followed by surgery in selected cases. Recently, durvalumab consolidation after definitive chemo-radiation has shown a meaningful overall survival benefit. However, it is important to note that elderly patients represent a high proportion of NSCLC population and frailty and comorbidities can significantly limit treatment options. Indeed, elderly patients are under-represented in clinical trials and data to drive treatment selection in this category of patients are scanty. Available data, main issues and controversies on multimodal treatment in elderly LA-NSCLC patients will be reviewed in this paper.
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Affiliation(s)
- Laura Bonanno
- Medical Oncology 2, Istituto Oncologico Veneto IRCCS, Padova, Italy.
| | - Ilaria Attili
- Division of Thoracic Oncology, European Institute of Oncology IRCSS, Milan, Italy
| | - Alberto Pavan
- Medical Oncology 2, Istituto Oncologico Veneto IRCCS, Padova, Italy
| | - Matteo Sepulcri
- Radiotherapy, Istituto Oncologico Veneto IOV IRCCS, Padova, Italy
| | - Giulia Pasello
- Medical Oncology 2, Istituto Oncologico Veneto IRCCS, Padova, Italy; Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Federico Rea
- Thoracic Surgery, Department of Cardiothoracic Surgery and Vascular Sciences, University of Padova, Padova, Italy
| | - Valentina Guarneri
- Medical Oncology 2, Istituto Oncologico Veneto IRCCS, Padova, Italy; Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - PierFranco Conte
- Medical Oncology 2, Istituto Oncologico Veneto IRCCS, Padova, Italy; Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
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A forward planned treatment planning technique for non-small-cell lung cancer stereotactic ablative body radiotherapy based on a systematic review of literature. JOURNAL OF RADIOTHERAPY IN PRACTICE 2015. [DOI: 10.1017/s1460396915000333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractPurpose and MethodA systematic literature review of six computerised databases was undertaken in order to review and summarise a forward planned lung stereotactic ablative body radiotherapy (SABR) treatment planning (TP) technique as a starting point for clinical implementation in the author’s department based on current empirical research. The data were abstracted and content analysed to synthesise the findings based upon a SIGN quality checklist tool.FindingsA four-dimensional computed tomography scan should be performed upon which the internal target volume and organs at risk (OAR) are drawn. A set-up margin of 5 mm is applied to account for inter-fraction motion. The field arrangement consists of a combination of 7–13 coplanar and non-coplanar beams all evenly spaced. Beam modifiers are used to assist in the homogeneity of the beam, although a 20% planning target volume dose homogeneity is acceptable. The recommended fractionations by the UK SABR Consortium are 54 Gy in 3 fractions (standard), 55–60 Gy in 5 fractions (conservative) and 50–60 Gy in 8–10 fractions (very conservative). Conformity indices for both the target volume and OAR will be used to assess the planned distribution.ConclusionAn overview of a clinically acceptable forward planned lung SABR TP technique based on current literature as a starting point, with a view to inverse planning with support from the UK SABR Consortium mentoring scheme.
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Yu Y, Guan H, Xing LG, Xiang YB. Role of gross tumor volume in the prognosis of non-small cell lung cancer treated with 3D conformal radiotherapy: a meta-analysis. Clin Ther 2015; 37:2256-66. [PMID: 26293808 DOI: 10.1016/j.clinthera.2015.07.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 07/15/2015] [Accepted: 07/16/2015] [Indexed: 12/26/2022]
Abstract
PURPOSE Three-dimensional conformal radiotherapy (3D-CRT) has become widely applied in patients with non-small cell lung cancer (NSCLC), and gross tumor volume (GTV) is a reliable index for predicting prognosis in patients with NSCLC. This meta-analysis investigated the association between GTV and prognosis in patients with NSCLC after 3D-CRT. METHODS Electronic bibliographic databases were searched to identify articles related to NSCLC and 3D-CRT. The search results were carefully screened, using predetermined selection criteria, to select the most relevant studies. Newcastle-Ottawa Scale criteria were applied by 2 reviewers independently to evaluate the quality of the methodology of each included article., Based on GTV, each patient was assigned to either the study group (large GTV [≥112 cm(3)]) or the control group (small GTV [<112 cm(3)]), and the mean rates of overall survival (OS) and survival at 1, 3, and 5 years were calculated in each group. Summary hazard ratio (HR) with 95% CI was calculated. FINDINGS The data from 10 cohort studies were incorporated into the current meta-analysis (1473 patients; study group, 773; control group, 700). The OS in the study group was significantly less than that in the control group (HR = 1.52; 95% CI, 1.10-1.94; P < 0.01). The study and control groups also had significantly different survival rates at 1 year (HR = 1.27; 95% CI, 1.10-1.46, P = 0.01), 3 years (HR = 2.06; 95% CI, 1.63-2.61; P < 0.01), and 5 years (HR = 2.25; 95% CI, 1.63-3.10; P < 0.01). Findings from funnel plots and Egger tests of the OS and 3-year survival rate suggested no publication bias. With respect to the 1- and 5-year survival rates, however, the funnel plots and Egger tests demonstrated publication bias among the included studies. IMPLICATIONS The relatively small number of studies and small sample size, as well as the lack of a specific and standard method of defining small and large GTV, may have influenced the credibility and reliability of our results. The findings suggest that GTV influences prognosis in patients with NSCLC after 3D-CRT. However, further studies with larger sample sizes are needed to confirm our finding that a larger GTV is negatively associated with NSCLC prognosis after 3D-CRT.
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Affiliation(s)
- Yang Yu
- Department of Radiation Oncology, Shandong's Key Laboratory of Radiation Oncology
| | - Hui Guan
- Department of Radiation Oncology, Shandong's Key Laboratory of Radiation Oncology
| | - Li-Gang Xing
- Department of Oncology, Shandong Cancer Hospital and Institute, School of Medicine and Life Sciences, University of Jinan and Shandong Academy of Medical Sciences, Jinan.
| | - Yong-Bing Xiang
- Department of Oncology, Renji Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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PET-CT use and the occurrence of elective nodal failure in involved field radiotherapy for non-small cell lung cancer: A systematic review. Radiother Oncol 2015; 115:151-6. [DOI: 10.1016/j.radonc.2015.04.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/26/2015] [Accepted: 04/05/2015] [Indexed: 11/19/2022]
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Daly PE, Ball DL. Tumor size and outcomes in non-small-cell lung carcinoma treated with radiotherapy: a critical review. Lung Cancer Manag 2014. [DOI: 10.2217/lmt.14.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SUMMARY: The relationship between tumor volume and outcome in non-small-cell lung cancer treated with chemoradiotherapy is complex. The tumor node metastasis classification and its inherent prognostic information are based on surgical data. Studies have shown the tumor node metastasis staging to be insufficient in providing prognostic information in patients treated with chemoradiotherapy. For larger lesions, intrinsic tumor composition and radiobiological factors may play a more important role in outcomes, while irradiating larger volumes increases the risk of toxicity. In an attempt to review the conflicting data on this topic, we systematically reviewed published studies that addressed the relationship between tumor volume and outcome in patients with non-small-cell lung cancer treated with chemoradiotherapy.
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Affiliation(s)
- Patricia E Daly
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - DL Ball
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, Australia
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Kunkler IH, Audisio R, Belkacemi Y, Betz M, Gore E, Hoffe S, Kirova Y, Koper P, Lagrange JL, Markouizou A, Pfeffer R, Villa S. Review of current best practice and priorities for research in radiation oncology for elderly patients with cancer: the International Society of Geriatric Oncology (SIOG) task force. Ann Oncol 2014; 25:2134-2146. [PMID: 24625455 DOI: 10.1093/annonc/mdu104] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Radiotherapy (RT) is a key component of the management of older cancer patients. Level I evidence in older patients is limited. The International Society of Geriatric Oncology (SIOG) established a task force to make recommendations for curative RT in older patients and to identify future research priorities. Evidence-based guidelines are provided for breast, lung, endometrial, prostate, rectal, pancreatic, oesophageal, head and neck, central nervous system malignancies and lymphomas. Patient selection should include comorbidity and geriatric evaluation. Advances in radiation planning and delivery improve target coverage, reduce toxicity and widen eligibility for treatment. Shorter courses of hypofractionated whole breast RT are safe and effective. Conformal RT and involved-field techniques without elective nodal irradiation have improved outcomes in non-small-cell lung cancer (NSCLC) without increasing toxicity. Where comorbidities preclude surgery, stereotactic body radiotherapy (SBRT) is an option for early-stage NSCLC and pancreatic cancer. Modern involved-field RT for lymphoma based on pre-treatment positron emission tomography data has reduced toxicity. Significant comorbidity is a relative contraindication to aggressive treatment in low-risk prostate cancer (PC). For intermediate-risk disease, 4-6 months of hormones are combined with external beam radiotherapy (EBRT). For high-risk PC, combined modality therapy (CMT) is advised. For high-intermediate risk, endometrial cancer vaginal brachytherapy is recommended. Short-course EBRT is an alternative to CMT in older patients with rectal cancer without significant comorbidities. Endorectal RT may be an option for early disease. For primary brain tumours, shorter courses of postoperative RT following maximal debulking provide equivalent survival to longer schedules. MGMT methylation status may help select older patients for temozolomide alone. Stereotactic RT provides an alternative to whole-brain RT in patients with limited brain metastases. Intensity-modulated radiation therapy provides an excellent technique to reduce dose to the carotids in head and neck cancer and improves locoregional control in oesophageal cancer. Best practice and research priorities are summarised.
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Affiliation(s)
- I H Kunkler
- Edinburgh Cancer Research Centre, University of Edinburgh, Edinburgh.
| | - R Audisio
- Department of Surgical Oncology, University of Liverpool, St Helens, UK
| | - Y Belkacemi
- Service de Radiothérapie, APHP-GH Henri Mondor, and UPEC (Université Paris Est Créteil), Créteil, France
| | - M Betz
- Institut de Radio-oncologie, Hirslanden Lausanne, Lausanne, Switzerland
| | - E Gore
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee
| | - S Hoffe
- Moffitt Cancer Center, Tampa, USA
| | - Y Kirova
- Service D'Oncologie Radiothérapie, Institut Curie, Paris, France
| | - P Koper
- Radiotherapy Center West (RCWest), The Hague, The Netherlands
| | - J-L Lagrange
- Service de Radiothérapie, APHP-GH Henri Mondor, and UPEC (Université Paris Est Créteil), Créteil, France
| | - A Markouizou
- Department of Radiation Oncology, Metaxa Cancer Hospital, Piraeus, Greece
| | - R Pfeffer
- Department of Radiation Oncology, Assuta Medical Center and Tel Aviv University, Tel Aviv, Israel
| | - S Villa
- Department of Radiation Oncology, Catalan Institute of Oncology, Badalona, Catalonia, Spain
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Liu Y, Xia T, Zhang W, Zhong Y, Zhang L, Wang X, Yu H. Variations of circulating endothelial progenitor cells and transforming growth factor-beta-1 (TGF-β1) during thoracic radiotherapy are predictive for radiation pneumonitis. Radiat Oncol 2013; 8:189. [PMID: 23885707 PMCID: PMC3766170 DOI: 10.1186/1748-717x-8-189] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 06/14/2013] [Indexed: 01/08/2023] Open
Abstract
Background The vascular endothelial cells are important targets of radiotherapy, which may be involved in the pathogenesis of radiation pneumonitis (RP). This study investigated the variations of circulating endothelial progenitor cells (EPCs) and transforming growth factor-beta-1 (TGF-β1) during three-dimensional conformal radiation therapy (3D-CRT) in patients with non–small-cell lung cancer (NSCLC) and analyzed the correlation between these variations with the occurrence of RP. Patients and methods From November 2008 to November 2009, eighty-four consecutive patients receiving 3D-CRT for stage III disease were evaluated prospectively. Circulating EPCs and TGF-β1 levels were measured at baseline, every 2 weeks during, and at the end of treatment. RP was evaluated prospectively at 6 weeks after 3D-CRT. Results Thirty-eight patients (47.5%) experienced score 1 or more of RP. The baseline levels of EPCs and TGF-β1 were analyzed, no difference was found between patients with and without RP during and after 3D-CRT. By serial measurement of TGF-β1 and EPCs levels, we found that the mean levels of EPCs in the whole population remained stable during radiotherapy, but the mean levels of TGF-β1 increased slowly during radiotherapy. TGF-β1 and EPCs levels were all significantly higher at week 2, week 4 and week 6 in patients with RP than that in patients without RP, respectively. During the period of radiation treatment, TGF-β1 levels began to increase in the first 2 weeks and became significantly higher at week 6 (P < 0.01). EPCs levels also began to increase in the first 2 weeks and reached a peak at week 4. Using an ANOVA model for repeated-measures, we found significant associations between the levels of TGF-β1 and EPCs during the course of 3D-CRT and the risk of developing RP (P < 0.01). Most of the dosimetric factors showed a significant association with RP. Conclusion Early variations of TGF-β1 and EPCs levels during 3D-CRT are significantly associated with the risk of RP. Variations of circulating TGF-β1 and EPCs levels during 3D-CRT may serve as independent predictive factors for RP. Trial registration Trials registration number: 20070618
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Affiliation(s)
- Yunfang Liu
- Department of Radiotherapy, Capital Medical University Affiliated Beijing Chao- yang Hospital, Beijing 100020, China.
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Mehta N, King CR, Agazaryan N, Steinberg M, Hua A, Lee P. Stereotactic body radiation therapy and 3-dimensional conformal radiotherapy for stage I non-small cell lung cancer: A pooled analysis of biological equivalent dose and local control. Pract Radiat Oncol 2011; 2:288-295. [PMID: 24674167 DOI: 10.1016/j.prro.2011.10.004] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 10/20/2011] [Accepted: 10/24/2011] [Indexed: 12/25/2022]
Abstract
PURPOSE To determine the relationship between tumor control probability (TCP) and biological effective dose (BED) for radiation therapy in medically inoperable stage I non-small cell lung cancer (NSCLC). METHODS AND MATERIALS Forty-two studies on 3-dimensional conformal radiation therapy (3D-CRT) and SBRT for stage I NSCLC were reviewed for tumor control (TC), defined as crude local control ≥ 2 years, as a function of BED. For each dose-fractionation schedule, BED was calculated at isocenter using the linear quadratic (LQ) and universal survival curve (USC) models. A scatter plot of TC versus BED was generated and fitted to the standard TCP equation for both models. RESULTS A total of 2696 patients were included in this study (SBRT: 1640; 3D-CRT: 1056). Daily fraction size was 1.2-4 Gy (total dose: 48-102.9) with 3D-CRT and 6-26 (total dose: 20-66) with SBRT. Median BED was 118.6 Gy (range, 68.5-320.3) and 95.6 Gy (range, 46.1-178.1) for the LQ and USC models, respectively. According to the LQ model, BED to achieve 50% TC (TCD50) was 61 Gy (95% confidence interval, 50.2-71.1). TCP as a function of BED was sigmoidal, with TCP ≥ 90% achieved with BED ≥ 159 Gy and 124 Gy for the LQ and USC models, respectively. CONCLUSIONS Dose-escalation beyond a BED 159 by LQ model likely translates into clinically insignificant gain in TCP but may result in clinically significant toxicity. When delivered with SBRT, BED of 159 Gy corresponds to a total dose of 53 Gy in 3 fractions at the isocenter.
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Affiliation(s)
- Niraj Mehta
- Department of Radiation Oncology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
| | - Christopher R King
- Department of Radiation Oncology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
| | - Nzhde Agazaryan
- Department of Radiation Oncology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
| | - Michael Steinberg
- Department of Radiation Oncology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
| | - Amanda Hua
- Department of Radiation Oncology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
| | - Percy Lee
- Department of Radiation Oncology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California.
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Wang J, Xia TY, Wang YJ, Li HQ, Li P, Wang JD, Chang DS, Liu LY, Di YP, Wang X, Wu WZ. Prospective Study of Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitors Concurrent With Individualized Radiotherapy for Patients With Locally Advanced or Metastatic Non–Small-Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2011; 81:e59-65. [DOI: 10.1016/j.ijrobp.2010.12.035] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2010] [Revised: 12/09/2010] [Accepted: 12/15/2010] [Indexed: 12/25/2022]
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Park CH, Bonomi M, Cesaretti J, Neugut AI, Wisnivesky JP. Effect of radiotherapy planning complexity on survival of elderly patients with unresected localized lung cancer. Int J Radiat Oncol Biol Phys 2010; 81:706-11. [PMID: 20932683 DOI: 10.1016/j.ijrobp.2010.06.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 06/15/2010] [Accepted: 06/18/2010] [Indexed: 11/17/2022]
Abstract
PURPOSE To evaluate whether complex radiotherapy (RT) planning was associated with improved outcomes in a cohort of elderly patients with unresected Stage I-II non-small-cell lung cancer (NSCLC). METHODS AND MATERIALS Using the Surveillance, Epidemiology, and End Results registry linked to Medicare claims, we identified 1998 patients aged >65 years with histologically confirmed, unresected stage I-II NSCLC. Patients were classified into an intermediate or complex RT planning group using Medicare physician codes. To address potential selection bias, we used propensity score modeling. Survival of patients who received intermediate and complex simulation was compared using Cox regression models adjusting for propensity scores and in a stratified and matched analysis according to propensity scores. RESULTS Overall, 25% of patients received complex RT planning. Complex RT planning was associated with better overall (hazard ratio 0.84; 95% confidence interval, 0.75-0.95) and lung cancer-specific (hazard ratio 0.81; 95% confidence interval, 0.71-0.93) survival after controlling for propensity scores. Similarly, stratified and matched analyses showed better overall and lung cancer-specific survival of patients treated with complex RT planning. CONCLUSIONS The use of complex RT planning is associated with improved survival among elderly patients with unresected Stage I-II NSCLC. These findings should be validated in prospective randomized controlled trials.
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Affiliation(s)
- Chang H Park
- Brookdale Department of Geriatrics and Adult Development, Mount Sinai School of Medicine, New York, NY 10029, USA
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Radiotherapy for lung cancer in the elderly. Lung Cancer 2010; 68:129-36. [DOI: 10.1016/j.lungcan.2009.12.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Revised: 11/30/2009] [Accepted: 12/07/2009] [Indexed: 12/25/2022]
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Abstract
This article has reviewed radiation treatment of thoracic malignancies in elderly patients. In general the literature suggests that thoracic irradiation is equally efficacious in elderly patients as in younger patients and is associated with increased but acceptable toxicity. Technical advances are allowing a further reduction in morbidity with preliminary results suggestive of stable outcomes. Prospective data from elderly specific trials are needed to determine the optimal treatment of lung cancer and to compare innovative radiation technology with standard therapies.
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Affiliation(s)
- Kristin J Redmond
- Department of Radiation Oncology and Molecular Radiation Sciences, The Johns Hopkins University School of Medicine, 401 North Broadway, Suite 1440, Baltimore, MD 21231, USA
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Kimura T, Togami T, Nishiyama Y, Ohkawa M, Takashima H. Impact of incidental irradiation on clinically uninvolved nodal regions in patients with advanced non-small-cell lung cancer treated with involved-field radiation therapy: does incidental irradiation contribute to the low incidence of elective nodal failure? Int J Radiat Oncol Biol Phys 2009; 77:337-43. [PMID: 19775827 DOI: 10.1016/j.ijrobp.2009.05.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Revised: 04/27/2009] [Accepted: 05/09/2009] [Indexed: 12/29/2022]
Abstract
PURPOSE To evaluate the incidental irradiation dose to elective nodal regions in the treatment of advanced non-small-cell lung cancer with involved-field radiation therapy (IF-RT) and the pattern of elective nodal failure (ENF). METHODS AND MATERIALS Fifty patients with advanced non-small-cell lung cancer, who received IF-RT at Kagawa University were enrolled. To evaluate the dose of incidental irradiation, we delineated nodal regions with a Japanese map and the American Thoracic Society map (levels 1-11) in each patient retrospectively and calculated the dose parameters such as mean dose, D95, and V95 (40 Gy as the prescribed dose of elective nodal irradiation). RESULTS Using the Japanese map, the median mean dose was more than 40 Gy in most of the nodal regions, except at levels 1, 3, and 7. In particular, each dosimetric parameter of level 1 was significantly lower than those at other levels, and each dosimetric parameter of levels 10 to 11 ipsilateral (11I) was significantly higher than those in other nodal regions. Using the American Thoracic Society map, basically, the results were similar to those of the Japanese map. ENF was observed in 4 patients (8%), five nodal regions, and no mean dose to the nodal region exceeded 40 Gy. On the Japanese map, each parameter of these five nodal region was significantly lower than those of the other nodal regions. CONCLUSIONS These results show that a high dose of incidental irradiation may contribute to the low incidence of ENF in patients who have received IF-RT.
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Affiliation(s)
- Tomoki Kimura
- Department of Radiology, Kagawa University, Faculty of Medicine, Kagawa, Japan.
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Gomez-Millan J. Radiation therapy in the elderly: more side effects and complications? Crit Rev Oncol Hematol 2009; 71:70-8. [PMID: 19144538 DOI: 10.1016/j.critrevonc.2008.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2008] [Revised: 09/16/2008] [Accepted: 11/20/2008] [Indexed: 10/21/2022] Open
Abstract
Aging is associated with physiological changes and comorbid illnesses, which may affect an individual's tolerance to radiation. There is the belief that a relationship exists between age and radiation toxicity and therefore non-curative schemes are offered to older patients. Preclinical studies show that normal tissue radiation-induced toxicity differs little with age. In the clinical setting, retrospective and some prospective studies have reported that elderly patients treated with radical radiotherapy alone or in combination with chemotherapy, who do not have comorbidities and retain a good performance status, show a benefit in treatment outcomes. However, an increase in acute effects or a lowered functional tolerance has also been reported. To select candidates for radical treatments, a specific geriatric assessment should be used to stratify elderly patients as a function of the physiological status. Only specifically designed prospective studies can define the role of radiation treatment in elderly patients with different physiological status.
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Affiliation(s)
- Jaime Gomez-Millan
- Hospital Juan Ramón Jiménez, Radiation Oncology Department, Ronda Norte SN. 21005 Huelva, Spain.
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Høyer M. Improved accuracy and outcome in radiotherapy of lung cancer. Radiother Oncol 2008; 87:1-2. [PMID: 18378029 DOI: 10.1016/j.radonc.2008.03.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2008] [Accepted: 03/07/2008] [Indexed: 10/22/2022]
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