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Beddok A, Kirova Y, Laki F, Reyal F, Vincent Salomon A, Servois V, Fourquet A. The place of the boost in the breast cancer treatment: State of art. Radiother Oncol 2022; 170:55-63. [DOI: 10.1016/j.radonc.2022.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/01/2022] [Accepted: 03/14/2022] [Indexed: 10/18/2022]
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Acree P, Kapadia A, Mahatme R, Zhang L, Patel D, Almoney C, Park G, Kofsky M, Matin S, Habibi M. Review of Current Accepted Practices in Identification of the Breast Lumpectomy Tumor Bed. Adv Radiat Oncol 2022; 7:100848. [PMID: 36148372 PMCID: PMC9486415 DOI: 10.1016/j.adro.2021.100848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 11/01/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose Of the 260,000 women diagnosed with breast cancer annually in the United States, more than 60% are treated with breast-conserving surgery or lumpectomy, followed by radiation to decrease the chance of local recurrence. More than 70% of breast cancer recurrences are localized to the original tumor cavity. Hence, targeted radiation therapy after lumpectomy is critical for recurrence prevention. With 30,000 patients annually opting for oncoplastic reconstruction of the breast after lumpectomy to improve cosmesis, the resulting tissue rearrangement increases the difficulty for radiation oncologists to accurately delineate the cavity when planning radiation therapy. Owing to the absence of a standardized protocol, it is important to assess the efficacy of various methods used to mark the tumor cavity for improved delineation. Methods and Materials A keyword search and analysis was used to compile relevant articles on PubMed (National Center for Biotechnology Information). Results Currently, a common practice for tumor cavity localization is applying titanium surgical clips to the borders of lumpectomy cavity. Tissue movement and seroma formation both impact the positioning of surgical clips within the tumor cavity and lead to significant interobserver variability. Furthermore, the main application of surgical clips is to control the small vessels during surgery, and that can create confusion when the same clips are used for tumor bed localization. All alternative solutions present more precise tumor bed delineation but possess individual concerns with workflow integration, patient comfort, and accuracy. Though liquid-based fiducials were found to be the most effective for delineating tumor cavities, there are still drawbacks for clinical use. Conclusions These findings should encourage medical innovators to develop novel techniques for tumor cavity marking to increase delineation accuracy and effectively target at-risk tissue. Future solutions in this space should consider the properties of liquid-based fiducial markers to improve radiation oncologists' ability to precisely delineate the tumor cavity.
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Bourgier C, Cowen D, Castan F, Lemanski C, Gourgou S, Rivera S, Labib A, Peignaux K, Blanc-Onfroy ML, Benyoucef A, Mege A, Douadi-Gaci Z, Racadot S, Latorzeff I, Schick U, Jacquot S, Massabeau C, Guilbert P, Geffrelot J, Ellis S, Lecouillard I, Breton-Callu C, Richard-Tallet A, Boulbair F, Cretin J, Belkacémi Y, Bons F, Azria D, Fenoglietto P. Quality assurance program and early toxicities in the phase III BONBIS randomized trial evaluating the role of a localized radiation boost in ductal carcinoma in situ. Radiother Oncol 2021; 164:57-65. [PMID: 34571090 DOI: 10.1016/j.radonc.2021.09.014] [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: 02/08/2021] [Revised: 09/15/2021] [Accepted: 09/19/2021] [Indexed: 11/26/2022]
Abstract
PURPOSE To describe the quality assurance (QA) program and early toxicities in the phase III randomized trial BONBIS (NCT00907868) on the role of a localized radiation boost in ductal carcinoma in situ (DCIS). MATERIALS AND METHODS From November 2008 to July 2014, 2004 patients were randomized in arm A (only whole breast radiotherapy, WBRT) and arm B (WBRT + boost). The QA program involved 44 participant centers that performed the dummy run (DR). Compliance and uniformity of clinical target volume (CTV) delineations, and dose prescription and delivery according to the BONBIS trial radiotherapy guidelines were analyzed. Acute toxicities (during and up to 3 months after radiotherapy completion, NCI-CTCAE v3.0 classification) were evaluated in 1929 patients. RESULTS The differences in whole breast CTV (CTV1) and planning target volume (PTV1) were ≤10%, and the differences in boost CTV (CTV2) and PTV (PTV2) were ≥20% compared with the reference DR values; 95% of the prescribed dose encompassed 98.7% and 100% of the median CTV1 and CTV2. Grade ≥2 breast erythema (38.3% vs. 22.4% of grade 2 and 5.4% vs. 2.1% of grade 3, p < 0.001), grade ≥2 dermatitis (2.8% vs. 0.7%, p < 0.001), and grade 2 hyperpigmentation (6.9% vs. 3.6%, p = 0.005) were more frequent in arm B than arm A. No acute lung or cardiac toxicity was observed. Smoking history, large breast size, and large breast CTV were strong predictive factors of grade ≥2 acute skin toxicities. CONCLUSIONS The QA program showed deviations in breast and tumor bed delineation. The boost significantly increased acute skin toxicities.
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Affiliation(s)
- Celine Bourgier
- Univ Montpellier, Montpellier, France; Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Didier Cowen
- Aix Marseille Univ, APHM, Hôpital Timone-Hôpital Nord, Département de Radiothérapie, Marseille, France
| | - Florence Castan
- Unité de Biométrie, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Claire Lemanski
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Sophie Gourgou
- Unité de Biométrie, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Sofia Rivera
- Gustave Roussy, Département d'oncologie radiothérapie, Villejuif, France; Université Paris-Saclay, Inserm, U1030, Villejuif, France
| | | | - Karine Peignaux
- Département d'Oncologie Radiothérapie Centre Georges-François LECLERC, Dijon, France
| | | | - Ahmed Benyoucef
- Département de Radiothérapie et de Physique médicale, Centre Henri Becquerel, Rouen, France
| | - Alice Mege
- Sainte Catherine, Institut du Cancer Avignon-Provence, Avignon, France
| | | | | | - Igor Latorzeff
- Département de radiothérapie-oncologie, Clinique Pasteur, Toulouse, France
| | - Ulrike Schick
- Department of Radiation Oncology, University Hospital of Brest, UBO, LaTIM UMR 1101, Brest, France
| | - Stephane Jacquot
- Centre de Cancerologie du Grand Montpellier, Montpellier, France
| | - Carole Massabeau
- Département de Radiotherapie, Institut Claudius Regaud IUCT-O, Toulouse, France
| | | | - Julien Geffrelot
- Service de Radiothérapie, Centre François Baclesse, Caen, France
| | - Stephen Ellis
- Service de Radiothérapie, Centre Catalan d'Oncologie, Perpignan, France
| | | | | | - Agnès Richard-Tallet
- Institut Paoli-Calmettes, département d'Oncologie Radiothérapie, Marseille, France; Centre de Recherche en Cancérologie de Marseille (CRCM), INSERM UMR 1068, Marseille, France
| | | | | | - Yazid Belkacémi
- Department of Radiation Oncology and Henri Mondor Breast Center, AP HP - Henri Mondor University Hospital, University of Paris-Est (UPEC), INSERM Unit 955, Team 21-IMRB, Creteil, France
| | - Françoise Bons
- Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France; Service de Radiothérapie, CHU Nîmes, France
| | - David Azria
- Univ Montpellier, Montpellier, France; Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
| | - Pascal Fenoglietto
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM U1194, Montpellier, France; Fédération Universitaire d'Oncologie Radiothérapie d'Occitanie Méditerranée, Institut régional du Cancer Montpellier (ICM), Montpellier, France
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Zhao C, Li J, Wang W, Gong G, Xu L, Zhang Y, Li F, Shao Q, Wang J, Liu X, Xu M. DE-MR simulation imaging for prone radiotherapy after breast-conserving surgery: assessing its application in lumpectomy cavity delineation based on deformable image registration. Radiat Oncol 2021; 16:91. [PMID: 34001182 PMCID: PMC8130288 DOI: 10.1186/s13014-021-01817-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/05/2021] [Indexed: 11/10/2022] Open
Abstract
Background The application of delayed-enhancement magnetic resonance (DE-MR) simulation imaging in lumpectomy cavity (LC) delineation for prone radiotherapy in patients with an invisible seroma or a low seroma clarity score (SCS) after breast-conserving surgery (BCS) based on deformable image registration (DIR) was assessed. Methods Twenty-six patients who were suitable for radiotherapy in prone positions after BCS were enrolled, and both computed tomography (CT) and DE-MR simulation scans were acquired. The LC delineated based on titanium surgical clips on CT images was denoted as LCCT. The LC delineated based on the signal of cavity boundaries on fat-suppressed T2-weighted imaging (T2WI) and multiphase delayed-enhancement T1-weighted imaging (DE-T1WI), which was performed at 2 min, 5 min and 10 min postinjection, were denoted as LCT2, LC2T1, LC5T1 and LC10T1, respectively. Afterwards, DIR was performed to compare the volumes and locations of the LCs with MIM software. The generalized conformity index (CIgen) of inter (intra) observer (Inter-CIgen and Intra-CIgen) was also used to explore the inter(intra) observer variation for LC delineation on each image modality. Results LCCT–LC10T1 provided the best conformal index (CI) and degree of inclusion (DI), increasing by 2.08% and 4.48% compared to LCCT–LCT2, 11.36% and 2.94% for LCCT–LC2T1, and 8.89% and 7.69% for LC5T1–LCCT, respectively. The center of mass (COM) of LCCT–LC10T1 decreased by 17.86%, 6.12% and 13.21% compared with that of LCCT–LCT2, LCCT–LC2T1 and LCCT–LC5T1, respectively. The agreement of LC delineation was strongest for 10th min DE-TIWI (coefficient of variation, COV = 2.30%, Inter-CIgen = 87.06%, Intra-CIgen = 92.64%). Conclusion For patients with a low SCS (SCS ≤ 2) after BCS, it is feasible to contour the LC based on prone DE-MR simulation images. Furthermore, the LC derived from prone DE-T1WI at 10 min was found to be most similar to that derived from prone CT simulation scans using titanium surgical clips regardless of the volume and location of the LC. Inter (intra) variability was minimal for the delineation of the LC based on 10th min DE-TIWI.
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Affiliation(s)
- Changhui Zhao
- School of Medicine, Shandong University, Jinan, 250012, Shandong Province, China
| | - Jianbin Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China.
| | - Wei Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China.
| | - Guanzhong Gong
- Department of Medical Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, Shandong Province, China
| | - Liang Xu
- Department of Medical Imagings, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Yingjie Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Fengxiang Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Qian Shao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Jinzhi Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Xijun Liu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
| | - Min Xu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
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Kumar A, Wadasadawala T, Joshi K, Pathak R, Scaria L, Upreti RR, Bhajbhuje R, Shet T, Parmar V, Gupta S, Mokal S, Sarin R. What is the dosimetric impact of isotropic vs anisotropic safety margins for delineation of the clinical target volume in breast brachytherapy? Brachytherapy 2020; 20:155-162. [PMID: 32888852 DOI: 10.1016/j.brachy.2020.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE The purpose of the study was to report dosimetric differences for breast brachytherapy plans optimized for clinical target volume (CTV) generated using conventional isotropic expansion of tumor bed volume (TBV) and Groupe Européen de Curiethérapie-European Society for Radiotherapy and Oncology (GEC-ESTRO) recommendations to expand the TBV anisotropically to achieve a total safety margin of 2 cm (resection margin size + added safety margin). METHODS Institutional records of 100 patients who underwent accelerated partial breast irradiation using multicatheter interstitial brachytherapy from May 2015 to March 2020 were reviewed retrospectively. Two sets of CT-based plans were made, one with 1-cm isotropic margins around the tumor bed (CTV_ISO) and the other with anisotropic margins (CTV_GEC). Plans were evaluated and compared using the American Brachytherapy Society and GEC-ESTRO guidelines. RESULTS The median TBV was 36.97 cc. The median margin widths were as follows: anterior 1.2, posterior 1.0, superior 1.0, inferior 0.9, medial 1.2, and lateral 1.2 cm. The mean tumor bed coverage index was 0.94; 0.93 [p.066], the CTV coverage index 0.86; 0.84 [p 0.001], the dose homogeneity index (DHI) 0.77; 0.75 [p < 0.001] and the conformity index 0.66; 0.64 [p < 0.001] in CTV_ISO and CTV_GEC plans, respectively. In smaller volume implants (TBV< 35 cc), the DHI was 0.76; 0.75 [p 0.008] and the conformity index was 0.66; 0.62 [p < 0.001], whereas in larger volumes >35 cc, the CTV coverage index was 0.86; 0.84 [p 0.003] and the DHI 0.78; 0.76 [p 0.001] in CTV_ISO and CTV_GEC plans, respectively. CONCLUSIONS In this cohort of patients who underwent accelerated partial breast irradiation, plans with anisotropic margins had lower conformity, the impact of which was predominantly seen in smaller implants. Rest of the dosimetric constraints were achieved in both the plans as per the American Brachytherapy Society and GEC-ESTRO guidelines.
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Affiliation(s)
- Anuj Kumar
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Tabassum Wadasadawala
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India.
| | - Kishore Joshi
- Department of Medical Physics, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Rima Pathak
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Libin Scaria
- Department of Medical Physics, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Ritu Raj Upreti
- Department of Medical Physics, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Rajesh Bhajbhuje
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Tanuja Shet
- Department of Pathology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Vani Parmar
- Department of Surgical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Sudeep Gupta
- Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
| | - Smruti Mokal
- Department of Biostatistics, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, Navi Mumbai, India
| | - Rajiv Sarin
- Department of Radiation Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
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Yu T, Li Y, Wang W, Li F, Wang J, Xu M, Zhang Y, Li J, Yu J. Interobserver Variability of Target Volumes Delineated in the Supine and Prone Positions Based on Computed Tomography Images for External-Beam Partial Breast Irradiation After Breast-Conserving Surgery: A Comparative Study. Front Oncol 2020; 10:323. [PMID: 32373505 PMCID: PMC7179679 DOI: 10.3389/fonc.2020.00323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/24/2020] [Indexed: 11/13/2022] Open
Abstract
Background: Although the supine position remains the dominant position for external-beam partial breast irradiation (EB-PBI), the advantages of administering EB-PBI in the prone position have been recognized. The interobserver variability between target volumes delineated in the different positions for EB-PBI after breast-conserving surgery needs to be investigated. Methods: Twenty-seven patients suitable for EB-PBI were enrolled from July 2016 to April 2017. Supine and prone simulation CT images were sequentially acquired for all enrolled patients during free breathing. Five experienced radiotherapists delineated the target volumes for all patients on supine and prone simulation CT images. The selected parameters, including target volumes, the coefficient of variation (COV), the matching degree (MD), and so on, were calculated to analyze the interobserver variability. Results: Regardless of the patient position, the interobserver variability between tumor bed (TB) and clinical target volume (CTV) measurements in supine and prone positions were statistically significant (F = 31.34, 19.467; 44.000, 41.985; P = 0.000, 0.001; 0.000, 0.001). The interobserver variability of COVCTV was significantly greater in the supine position than in the prone position (T = 2.64, P = 0.014). Furthermore, the interobserver variabilities of MDTB and MDCTV were statistically lower in the supine position than in the prone position (Z = −3.460, −3.195, P = 0.000, 0.001). Conclusion: When delineating the target volume for EB-PBI, the interobserver variability in the prone position was lower than that in the supine position. Hence, the administration of EB-PBI in the prone position during free breathing is a reasonable option.
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Affiliation(s)
- Ting Yu
- Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China.,Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - YanKang Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.,Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Wei Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Fengxiang Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Jinzhi Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Min Xu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Yingjie Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Jianbin Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Jinming Yu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute (Shandong Cancer Hospital), Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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Corrao G, Rojas DP, Ciardo D, Fanetti G, Dicuonzo S, Mantovani M, Gerardi MA, Dell'Acqua V, Morra A, Fodor C, Galimberti VE, Veronesi P, Cattani F, Orecchia R, Jereczek-Fossa BA, Leonardi MC. Intra- and inter-observer variability in breast tumour bed contouring and the controversial role of surgical clips. Med Oncol 2019; 36:51. [PMID: 31037520 DOI: 10.1007/s12032-019-1273-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 04/17/2019] [Indexed: 10/26/2022]
Abstract
The purpose of this study was to evaluate whether the visualization of surgical clips (SCs) on the same set of planning computed tomography (CT) of breast cancer (BC) patients influences agreement on tumour bed (TB) delineation. Planning CT (CTorig) of 47 BC patients with SCs to visualize the TB was processed in order to blur SCs and create a virtual CT (CTmod). Four radiation oncologists (ROs, 2 juniors and 2 seniors) contoured TB on both the CT sets. Centre of mass distance (CMD), percentage overlap as Dice similarity coefficient (DSC), surface distance as average Hausdorff distance (AHD) and TB volume size were analysed. The intra-observer variability when contouring TB with and without SCs was statistically significant (p-values = 0.016, 0.0002 and ≪ 0.001 for CMD, AHD and DSC, respectively). Junior ROs showed worse reproducibility compared to seniors. The median DSC was < 0.7. The inter-observer variability with and without SCs was statistically significant (p < 0.001) for all metrics, with an increase of 48.7% in DSC and decrease of 50.7% and 57.1% in CMD and AHD, respectively, as relative median values, when SCs were visible. Regarding TB volumes, when SCs were visible, the intra-observer analysis revealed that 3/4 ROs delineated larger volumes, especially juniors. The inter-observer analysis showed that, in presence of visible SCs, the difference in TB volume among all the ROs fell from statistically significant to borderline significance (p = 0.052). TB contouring is confirmed to be an observer-dependent task. SCs decreased the intra and inter-observer variability but the overall agreement between ROs remained low.
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Affiliation(s)
- Giulia Corrao
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Via Festa del Perdono 7, 20122, Milan, Italy
| | - Damaris Patricia Rojas
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
| | - Delia Ciardo
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
| | - Giuseppe Fanetti
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
| | - Samantha Dicuonzo
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy.
| | - Marinella Mantovani
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Via Festa del Perdono 7, 20122, Milan, Italy
| | - Marianna Alessandra Gerardi
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
| | - Veronica Dell'Acqua
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
| | - Anna Morra
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
| | - Cristiana Fodor
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
| | | | - Paolo Veronesi
- Division of Breast Surgery, IEO, European Institute of Oncology IRCCS, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Via Festa del Perdono 7, 20122, Milan, Italy
| | - Federica Cattani
- Unit of Medical Physics, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Roberto Orecchia
- Scientific Direction, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Barbara Alicja Jereczek-Fossa
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Via Festa del Perdono 7, 20122, Milan, Italy
| | - Maria Cristina Leonardi
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, Via Ripamonti 435, 20141, Milan, Italy
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8
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Wang W, Li J, Xing J, Xu M, Shao Q, Fan T, Guo B, Liu S. Analysis of the variability among radiation oncologists in delineation of the postsurgical tumor bed based on 4D-CT. Oncotarget 2018; 7:70516-70523. [PMID: 27655639 PMCID: PMC5342570 DOI: 10.18632/oncotarget.12044] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 08/24/2016] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE This study investigated interobserver and intraobserver variability in radiation oncologists' definition of the tumor bed (TB) after breast-conserving surgery (BCS). RESULTS The TB volume, CVS and number of surgical clips were not significantly related to intraobserver variability. Moreover, no correlation was noted between CT slice thickness and interobserver variability (Δinter, DSCinter) in TB delineation, and no significant difference was noted among the three groups. The TB volume was negatively correlated with Δinter. DSCinter improved significantly with increased TB volume and decreased Δinter. DSCinter also increased significantly in patients with a CVS of 3 to 5 compared with patients with a CVS of 1 to 2. DSCinter was thus positively correlated with the CVS, with a correlation coefficient of 0.451. The use of 7 to 9 surgical clips neither decreased Δinter nor increased DSCinter. MATERIALS AND METHODS Five or more surgical clips were placed at the TB during lumpectomy. The TB was delineated on the end expiration scan. The data were stratified based on the cavity visualization score (CVS), CT slice thickness and surgical clip number. The Dice similarity coefficient (DSC) and inter(intra)observer variability (Δinter and Δintra) in different groups were evaluated and compared. CONCLUSIONS Inter(intra)observer variability in TB delineation was decreased for breast cancer patients implanted with 5 or more surgical clips in the cohort with a higher CVS and a larger TB. The use of more than 6 surgical clips did not significantly improve TB delineation, so 5 to 6 surgical clips are likely adequate to delineate the TB.
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Affiliation(s)
- Wei Wang
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
| | - Jianbin Li
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
| | - Jun Xing
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
| | - Min Xu
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
| | - Qian Shao
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
| | - Tingyong Fan
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
| | - Bing Guo
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
| | - Shanshan Liu
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong province, China, 250117
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Kawamura M, Maeda Y, Yamamoto K, Takamatsu S, Sato Y, Minami H, Saga Y, Kume K, Tameshige Y, Sasaki M, Tamamura H, Ohta K, Itoh Y, Naganawa S. Development of the breast immobilization system in prone setup: The effect of bra in prone position to improve the breast setup error. J Appl Clin Med Phys 2017; 18:155-160. [PMID: 28594079 PMCID: PMC5875815 DOI: 10.1002/acm2.12116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 03/24/2017] [Accepted: 04/17/2017] [Indexed: 11/10/2022] Open
Abstract
Purpose/objective(s) Accurate and reproducible positioning of the breast is difficult due to its deformability and softness; thus, targeting a breast tumor or tumor bed with fractionated radiotherapy using external beam radiation is difficult. The aim of this study was to develop a novel bra to aid in breast immobilization in the prone position. Materials & methods To assess the accuracy of prone position fixation of breast tumors, 33 breast cancer patients with 34 lesions were recruited. The bra used in this verification was customized from a commercially available bra. Duplicate MRI were acquired in the prone position, alternating with and without the bra, and for each series, patients were asked to step off the MRI table and re‐set up in the prone position. Patients were also asked to remove and re‐fit the bra for the second MRI. Each pair of images were superimposed to match the shape of the skin surface, and the maximum difference in tumor geometric center in three axes was measured. The required set up margin was calculated as: required margin = mean difference in geometric center + 2.5 standard deviation. The volumetric overlap of the tumor, as well as contouring uncertainties, was evaluated using contour analysis software. Results The median breast size was 498 cc. The required margins for the lateral, vertical, and longitudinal directions were estimated to be 4.1, 4.1, and 5.0 mm, respectively, with the bra, and 5.1, 6.9, and 6.7 mm, respectively, without the bra. These margins covered the dislocation of more than 33 lesions in total. With the bra, 33 lesions had achieved an objective overlap of 95% and 99% with 2 and 4 mm margins, respectively, whereas 4 and 8 mm, respectively, were needed without the bra. Conclusion The use of an immobilizing bra reduced the setup margin for prone position fixation of breast tumors.
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Affiliation(s)
- Mariko Kawamura
- Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yoshikazu Maeda
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | | | - Shigeyuki Takamatsu
- Department of Radiotherapy, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Yoshitaka Sato
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Hiroki Minami
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Yusuke Saga
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Kyo Kume
- Research and Development Division, The Wakasa Wan Energy Research Center, Fukui, Japan
| | - Yuji Tameshige
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | - Makoto Sasaki
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui, Japan
| | | | - Kouji Ohta
- Department of Surgery, Fukui Prefectural Hospital, Fukui, Japan
| | - Yoshiyuki Itoh
- Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Shinji Naganawa
- Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Guo B, Li JB, Wang W, Xu M, Li YK, Liu TH. A comparison of dosimetric variance for external-beam partial breast irradiation using three-dimensional and four-dimensional computed tomography. Onco Targets Ther 2016; 9:1857-63. [PMID: 27099517 PMCID: PMC4821394 DOI: 10.2147/ott.s100629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose To investigate the potential dosimetric benefits from four-dimensional computed tomography (4DCT) compared with three-dimensional computed tomography (3DCT) in radiotherapy treatment planning for external-beam partial breast irradiation (EB-PBI). Patients and methods 3DCT and 4DCT scan sets were acquired for 20 patients who underwent EB-PBI. The volume of the tumor bed (TB) was determined based on seroma or surgical clips on 3DCT images (defined as TB3D) and the end inhalation (EI) and end exhalation (EE) phases of 4DCT images (defined as TBEI and TBEE, respectively). The clinical target volume (CTV) consisted of the TB plus a 1.0 cm margin. The planning target volume (PTV) was the CTV plus 0.5 cm (defined as PTV3D, PTVEI, and PTVEE). For each patient, a conventional 3D conformal plan (3D-CRT) was generated (defined as EB-PBI3D, EB-PBIEI, and EB-PBIEE). Results The PTV3D, PTVEI, and PTVEE were similar (P=0.549), but the PTV coverage of EB-PBI3D was significantly less than that of EB-PBIEI or EB-PBIEE (P=0.001 and P=0.025, respectively). There were no significant differences in the homogeneity or conformity indexes between the three treatment plans (P=0.125 and P=0.536, respectively). The EB-PBI3D plan resulted in the largest organs at risk dose. Conclusion There was a significant benefit for patients when using 3D-CRT based on 4DCT for EB-PBI with regard to reducing nontarget organ exposure. Respiratory motion did not affect the dosimetric distribution during free breathing, but might result in poor dose coverage when the PTV is determined using 3DCT.
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Affiliation(s)
- Bing Guo
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong Province, People's Republic of China; Department of Radiation Oncology, Shandong Cancer Hospital & Institute, Jinan, Shandong Province, People's Republic of China
| | - Jian-Bin Li
- Department of Radiation Oncology, Shandong Cancer Hospital & Institute, Jinan, Shandong Province, People's Republic of China
| | - Wei Wang
- Department of Radiation Oncology, Shandong Cancer Hospital & Institute, Jinan, Shandong Province, People's Republic of China
| | - Min Xu
- Department of Radiation Oncology, Shandong Cancer Hospital & Institute, Jinan, Shandong Province, People's Republic of China
| | - Yan-Kang Li
- Department of Radiation Oncology, Shandong Cancer Hospital & Institute, Jinan, Shandong Province, People's Republic of China; School of Medicine, Shandong University, Jinan, Shandong Province, People's Republic of China
| | - Tong-Hai Liu
- Department of Radiation Oncology, Shandong Cancer Hospital & Institute, Jinan, Shandong Province, People's Republic of China
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Major T, Gutiérrez C, Guix B, van Limbergen E, Strnad V, Polgár C. Recommendations from GEC ESTRO Breast Cancer Working Group (II): Target definition and target delineation for accelerated or boost partial breast irradiation using multicatheter interstitial brachytherapy after breast conserving open cavity surgery. Radiother Oncol 2016; 118:199-204. [PMID: 26776444 DOI: 10.1016/j.radonc.2015.12.006] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 12/18/2015] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To prepare guidelines for target definition and delineations after open cavity breast conserving surgery in accelerated partial breast irradiations or boost treatments using multicatheter interstitial brachytherapy based on the consensus of the Breast Working Group of GEC-ESTRO. METHOD Following a study on interobserver variations of target volume delineation in multicatheter breast brachytherapy after open cavity surgery and a number of discussions in consensus meetings these guidelines were worked out by experts on the field. PROPOSED RECOMMENDATIONS (1) Consistent windowing has to be used for proper cavity visualization. (2) The cavity visualization score has to be at least 3 in order to minimize the interobserver variations of target definition. (3) At delineation of surgical cavity only the homogeneous part of the postoperative seroma has to be included in the contours and protrusions or sharp irregularities have to be excluded. When surgical clips are present, they have to be surrounded by the contour with close contact. (4) CTV is created from the outlined surgical cavity with a nonisotropic geometrical extension. In each direction the safety margin is calculated by taking into account the size of the free resection margin. The total size of safety margin is always 20mm which is the sum of the surgical and added safety margins. CTV is limited to chest wall/pectoral muscles and 5mm below the skin surface. CONCLUSION Following these guidelines the target volume definition in breast brachytherapy after open cavity surgery is expected to be accomplished in more consistent way with low interobserver variations.
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Affiliation(s)
- Tibor Major
- Radiotherapy Centre, National Institute of Oncology, Budapest, Hungary
| | - Cristina Gutiérrez
- Department of Radiation Oncology, Catalan Institute of Oncology, Barcelona, Spain
| | - Benjamin Guix
- Radiation Oncology, Institute IMOR, Barcelona, Spain
| | - Erik van Limbergen
- Department of Radiotherapy, University Hospital Gasthuisberg, Leuven, Belgium
| | - Vratislav Strnad
- Department of Radiation Oncology, University Hospital Erlangen, Germany
| | - Csaba Polgár
- Radiotherapy Centre, National Institute of Oncology, Budapest, Hungary
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Interobserver variations of target volume delineation in multicatheter partial breast brachytherapy after open cavity surgery. Brachytherapy 2015. [DOI: 10.1016/j.brachy.2015.06.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Jacob J, Heymann S, Borget I, Dumas I, Riahi E, Maroun P, Ezra P, Roberti E, Rivera S, Deutsch E, Bourgier C. Dosimetric Effects of the Interfraction Variations during Whole Breast Radiotherapy: A Prospective Study. Front Oncol 2015; 5:199. [PMID: 26442211 PMCID: PMC4584980 DOI: 10.3389/fonc.2015.00199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 08/31/2015] [Indexed: 11/27/2022] Open
Abstract
Introduction The aim of this work was to assess the dosimetric impact of the interfraction variations during breast radiotherapy. Materials and methods Daily portal imaging measurements were prospectively performed in 10 patients treated with adjuvant whole breast irradiation (50 Gy/25 fractions). Margins between the clinical target volume and the planning target volume (PTV) were 5 mm in the three dimensions. Parameters of interest were the central lung distance (CLD) and the inferior central margin (ICM). Daily movements were applied to the baseline treatment planning (TP1) to design a further TP (TP2). The PTV coverage and organ at risk exposure were measured on both TP1 and TP2, before being compared. Results A total of 241 portal images were analyzed. The random and systematic errors were 2.6 and 3.7 mm for the CLD, 4.3 and 6.9 mm for the ICM, respectively. No significant consequence on the PTV treatments was observed (mean variations: +0.1%, p = 0.56 and −1.8%, p = 0.08 for the breast and the tumor bed, respectively). The ipsilateral lung and heart exposure was not significantly modified. Conclusion In our series, the daily interfraction variations had no significant effect on the PTV coverage or healthy tissue exposure during breast radiotherapy.
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Affiliation(s)
- Julian Jacob
- Department of Radiotherapy, Gustave Roussy , Villejuif , France
| | - Steve Heymann
- Department of Radiotherapy, Gustave Roussy , Villejuif , France
| | - Isabelle Borget
- Department of Biostatistics and Epidemiology, Gustave Roussy , Villejuif , France ; University Paris-Sud , Kremlin-Bicêtre , France
| | - Isabelle Dumas
- Department of Physics, Gustave Roussy , Villejuif , France
| | - Elyes Riahi
- Department of Physics, Gustave Roussy , Villejuif , France
| | - Pierre Maroun
- Department of Radiotherapy, Gustave Roussy , Villejuif , France
| | - Patrick Ezra
- Department of Radiotherapy, Gustave Roussy , Villejuif , France
| | - Elena Roberti
- Department of Radiotherapy, Gustave Roussy , Villejuif , France
| | - Sofia Rivera
- Department of Radiotherapy, Gustave Roussy , Villejuif , France
| | - Eric Deutsch
- Department of Radiotherapy, Gustave Roussy , Villejuif , France ; University Paris-Sud , Kremlin-Bicêtre , France
| | - Céline Bourgier
- Department of Oncologic Radiotherapy, Institut du Cancer de Montpellier , Montpellier , France
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Recommendations from GEC ESTRO Breast Cancer Working Group (I): Target definition and target delineation for accelerated or boost Partial Breast Irradiation using multicatheter interstitial brachytherapy after breast conserving closed cavity surgery. Radiother Oncol 2015; 115:342-8. [DOI: 10.1016/j.radonc.2015.06.010] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/08/2015] [Accepted: 06/08/2015] [Indexed: 11/18/2022]
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15
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Guo B, Li J, Wang W, Xu M, Shao Q, Zhang Y, Liang C, Guo Y. Interobserver variability in the delineation of the tumour bed using seroma and surgical clips based on 4DCT scan for external-beam partial breast irradiation. Radiat Oncol 2015; 10:66. [PMID: 25889620 PMCID: PMC4363049 DOI: 10.1186/s13014-015-0370-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 02/25/2015] [Indexed: 11/30/2022] Open
Abstract
Background To explore the interobserver variability in the delineation of the tumour bed using seroma and surgical clips based on the four-dimensional computed tomography (4DCT) scan for external-beam partial breast irradiation (EB-PBI) during free breathing. Methods Patients with a seroma clarity score (SCS) 3 ~ 5 and ≥5 surgical clips in the lumpectomy cavity after breast-conserving surgery who were recruited for EB-PBI underwent 4DCT simulation. Based on the ten sets of 4DCT images acquired, the tumour bed formed using the clips, the seroma, and both the clips and seroma (defined as TBC, TBS and TBC+S, respectively) were delineated by five radiation oncologists using specific guidelines. The following parameters were calculated to analyse interobserver variability: volume of the tumour bed (TBC, TBS, TBC+S), coefficient of variation (COVC, COVS, COVC+S), and matching degree (MDC, MDS, MDC+S). Results The interobserver variability for TBC and TBC+S and for COVC and COVC+S were statistically significant (p = 0.021, 0.008, 0.002, 0.015). No significant difference was observed for TBS and COVS (p = 0.867, 0.061). Significant differences in interobserver variability were observed for MDC vs MDS, MDC vs MDC+S, MDS vs MDC+S (p = 0.000, 0.032, 0.008), the interobserver variability of MDS was smaller than that of MDC and MDC+S (MDS > MDC+S > MDC). Conclusions When the SCS was 3 ~ 5 points and the number of surgical clips was ≥5, interobserver variability was minimal for the delineation of the tumour bed based on seroma.
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Affiliation(s)
- Bing Guo
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China. .,Medicine and Life Sciences College of Shandong Academy of Medical Sciences, Jinan University, Jinan, Shandong Province, People's Republic of China.
| | - Jianbin Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Wei Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Min Xu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Qian Shao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Yingjie Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Chaoqian Liang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China.
| | - Yanluan Guo
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jiyan Road, Jinan, Shandong Province, 250117, China. .,Medicine and Life Sciences College of Shandong Academy of Medical Sciences, Jinan University, Jinan, Shandong Province, People's Republic of China.
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Ippolito E, Trodella L, Silipigni S, D'Angelillo R, Di Donato A, Fiore M, Grasso A, Angelini E, Ramella S, Altomare V. Estimating the Value of Surgical Clips for Target Volume Delineation in External Beam Partial Breast Radiotherapy. Clin Oncol (R Coll Radiol) 2014; 26:677-83. [DOI: 10.1016/j.clon.2014.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 07/15/2014] [Accepted: 07/21/2014] [Indexed: 11/25/2022]
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17
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[Partial breast irradiation]. Bull Cancer 2014; 101:52-5. [PMID: 24445657 DOI: 10.1684/bdc.2013.1869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Owing to breast cancer screening, breast cancer is more and more diagnosed at early stage. For those breast cancer women, breast conserving treatment (breast conserving surgery followed by whole breast irradiation) is commonly used since many years. New radiation modalities have been recently developed in early breast cancers particularly accelerated partial breast irradiation (APBI). Among all techniques of radiotherapy, 3D-conformal APBI and intraoperative radiotherapy (IORT) are the main modalities of radiotherapy used. The present review states on indications, treatment modalities and updated results of local control and side effects of partial breast irradiation.
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18
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Ding Y, Li J, Wang W, Wang S, Fan T, Xu M, Shao Q, Ma Z. Displacement of the lumpectomy cavity defined by surgical clips and seroma based on 4D-CT scan for external-beam partial breast irradiation after breast-conserving surgery: a comparative study. Br J Radiol 2013; 86:20130416. [PMID: 23995875 DOI: 10.1259/bjr.20130416] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To compare the displacements of the lumpectomy cavity delineated by the surgical clips and the seroma based on four-dimensional CT (4D-CT) for external-beam partial breast irradiation (EB-PBI) after breast-conserving surgery (BCS). METHODS 14 breast cancer patients after BCS were recruited for EB-PBI and undertook 4D-CT simulation. On the 10 sets of the 4D-CT images, all the surgical clips in the cavity were delineated. The gross tumour volume (GTV) formed by the clips, the seroma, and both the clips and the seroma were defined as GTVc, GTVs and GTVc+s, respectively. The displacements of the centre of mass (COM) of the clips, GTVc, GTVs, GTVc+s and the selected clips in the three-dimensional (3D) directions were recorded and compared. RESULTS In the left-right, anterior-posterior and superior-inferior directions, the displacements were 2.20, 1.80 and 2.70 mm for the clip COM; 0.90, 1.05 and 1.20 mm for GTVc; 0.80, 1.05 and 0.80 mm for GTVs; and 0.90, 1.20 and 1.40 mm for GTVc+s, respectively. In the 3D directions, the displacements of the clip COM were greater than the GTVc, GTVs, GTVc+s, and the displacements of the clip COM, GTVc+s, GTVc and GTVs were significantly greater than the displacements of the selected clips (p<0.05). CONCLUSION The displacements of the clip COM were greater than that of the GTVc, GTVs, GTVc+s and the four selected clips. The optimal internal target volume should be defined based on the boundary displacements. ADVANCES IN KNOWLEDGE When the GTV was delineated using the clips and/or the seroma, there was displacement difference between the lumpectomy cavity centre and the boundary for the EB-PBI. The optimal internal target volume should be defined based on the boundary displacements of the lumpectomy cavity.
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Affiliation(s)
- Y Ding
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, China
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Schaverien MV, Stallard S, Dodwell D, Doughty JC. Use of boost radiotherapy in oncoplastic breast-conserving surgery - a systematic review. Eur J Surg Oncol 2013; 39:1179-85. [PMID: 23988230 DOI: 10.1016/j.ejso.2013.07.240] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 07/10/2013] [Accepted: 07/29/2013] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND The use of local boost radiotherapy to the tumour bed has been demonstrated in randomised-controlled trials to reduce local recurrence rates following breast-conserving surgery (BCS) and is the standard of care. Oncoplastic BCS techniques with parenchymal rearrangement present new challenges to the localisation of the tumour bed and therefore delivery of local boost radiotherapy. The aim of this review was to evaluate the reporting of boost radiotherapy in the oncoplastic BCS literature. METHODS Pubmed, Ovid MEDLINE, EMBASE, and the Cochrane Database of Systematic Reviews were searched for studies reporting oncoplastic BCS using volume displacement techniques. RESULTS 24 studies met the inclusion criteria (n = 1933 patients). Use of boost radiotherapy was reported in 11 studies, in 2 of which it was for the treatment of incomplete or close margins, and marking of the tumour bed was only reported in 8 studies. None of the studies reported the number of patients where the tumour bed could not be localised. CONCLUSIONS The use of local boost radiotherapy and tumour bed marking was not reported in the majority of studies of oncoplastic BCS. Future studies need to provide detailed information regarding the use of boost radiotherapy and difficulties determining the target volume so that current radiotherapy approaches can be reviewed and improved for these advanced techniques.
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Affiliation(s)
- M V Schaverien
- Department of Surgery, Western Infirmary, Dumbarton Road, Glasgow G11 6NT, Scotland, UK; Canniesburn Plastic Surgery Unit Jubilee Building, Royal Infirmary, 84 Castle Street, Glasgow G4 0SF, UK.
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Yang TJ, Tao R, Elkhuizen PH, van Vliet-Vroegindeweij C, Li G, Powell SN. Tumor bed delineation for external beam accelerated partial breast irradiation: A systematic review. Radiother Oncol 2013; 108:181-9. [DOI: 10.1016/j.radonc.2013.05.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 05/12/2013] [Accepted: 05/12/2013] [Indexed: 11/15/2022]
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Moser EC, Vrieling C. Accelerated partial breast irradiation: the need for well-defined patient selection criteria, improved volume definitions, close follow-up and discussion of salvage treatment. Breast 2012; 21:707-15. [PMID: 23127279 DOI: 10.1016/j.breast.2012.09.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 08/17/2012] [Accepted: 09/23/2012] [Indexed: 12/24/2022] Open
Abstract
Breast-conserving therapy, including whole breast irradiation, has become a well-established alternative to mastectomy in early-stage breast cancer patients, with similar survival rates and better cosmetic outcome. However, many women are still treated with mastectomy, due to logistical issues related to the long course of radiotherapy (RT). To reduce mastectomy rates and/or omission of RT after breast-conserving surgery, shorter, hypofractionated RT treatments have been introduced. More recently, the necessity of routinely treating the entire breast in all patients has been questioned, leading to the development of partial breast radiotherapy. With accelerated partial breast irradiation (APBI) these two approaches have been combined: the tumor bed with a 1-2 cm margin is irradiated either intra-operatively (single fraction) or postoperatively over 5-15 days. Different techniques have been developed, including interstitial brachytherapy, intra-cavity brachytherapy, intra-operative radiotherapy and external beam radiotherapy. These techniques are being evaluated in several ongoing phase III studies. Since its introduction, APBI has been the subject of continuous debate. ASTRO and GEC-ESTRO have published guidelines for patient selection for APBI, and strongly recommend that APBI be carried out within ongoing clinical trials. Recently, the patient selection criteria for APBI have also been up for debate, following the publication of results from different groups that do/do not confirm a difference in recurrence risk among the ASTRO defined risk groups. This paper reviews the different APBI techniques, current recommendations for patient selection, available clinical data and ongoing clinical trials. A case report is included to illustrate the need for careful follow-up of patients treated with APBI.
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Affiliation(s)
- Elizabeth C Moser
- Breast Unit/Department of Radiotherapy, Champalimaud Cancer Centre, Lisbon, Portugal.
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Bourgier C, Dumas I, Marsiglia H, Rossier C, Taright N, Biron B, Auzac G. Irradiation partielle accélérée du cancer du sein : aspect théorique. Cancer Radiother 2012; 16:470-2. [DOI: 10.1016/j.canrad.2012.05.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 05/23/2012] [Indexed: 10/28/2022]
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Bourgier C, Acevedo-Henao C, Dunant A, Rossier C, Levy A, El Nemr M, Dumas I, Delaloge S, Mathieu MC, Garbay JR, Taghian A, Marsiglia H. Higher toxicity with 42 Gy in 10 fractions as a total dose for 3D-conformal accelerated partial breast irradiation: results from a dose escalation phase II trial. Radiat Oncol 2012; 7:141. [PMID: 22913640 PMCID: PMC3502482 DOI: 10.1186/1748-717x-7-141] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Accepted: 07/13/2012] [Indexed: 11/25/2022] Open
Abstract
Objective Recent recommendations regarding indications of accelerated partial breast irradiation (APBI) have been put forward for selected breast cancer (BC) patients. However, some treatment planning parameters, such as total dose, are not yet well defined. The Institut Gustave Roussy has initiated a dose escalation trial at the 40 Gy/10 fractions/5 days and at a further step of total dose (TD) of 42 Gy/10 fractions/ 5 days. Here, we report early results of the latest step compared with the 40 Gy dose level. Methods and materials From October 2007 to March 2010, a total of 48 pT1N0 BC patients were enrolled within this clinical trial: 17 patients at a TD of 42 Gy/10f/5d and 31 at a TD of 40 Gy/10f/5d. Median follow-up was 19 months (min-max, 12–26). All the patients were treated by APBI using a technique with 2 minitangents and an “enface” electrons delivering 20% of the total dose. Toxicities were systematically assessed at 1; 2; 6 months and then every 6 months. Results Patients’ recruitment of 42 Gy step was ended owing to persistent grade 3 toxicity 6 months after APBI completion (n = 1). Early toxicities were statistically higher after a total dose of 42 Gy regarding grade ≥2 dry (p = 0.01) and moist (p = 0.05) skin desquamation. Breast pain was also statistically higher in the 42 Gy step compared to 40 Gy step (p = 0.02). Other late toxicities (grade ≥2 fibrosis and telangectasia) were not statistically different between 42 Gy and 40 Gy. Conclusions Early toxicities were more severe and higher rates of late toxicities were observed after 42 Gy/10 fractions/5 days when compared to 40 Gy/10 fractions/5 days. This data suggest that 40 Gy/10 fractions/ 5 days could potentially be the maximum tolerance for PBI although longer follow-up is warranted to better assess late toxicities.
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Affiliation(s)
- Celine Bourgier
- Department of Radiation Oncology, Institut Gustave Roussy, 114 rue Edouard Vaillant, 94 805, Villejuif, France.
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Bartelink H, Bourgier C, Elkhuizen P. Has partial breast irradiation by IORT or brachytherapy been prematurely introduced into the clinic? Radiother Oncol 2012; 104:139-42. [PMID: 22857804 DOI: 10.1016/j.radonc.2012.07.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 07/19/2012] [Accepted: 07/20/2012] [Indexed: 11/29/2022]
Abstract
In contrast to most new oncology treatments, wide clinical introduction of partial breast irradiation (PBI) is not based on level A trial evidence. Despite promising phase I/II data, new reports based upon large cohorts of patients mention more recurrences and/or complications from PBI compared with whole breast irradiation (WBI), necessitating more careful selection of patients for PBI while awaiting long term results of major clinical trials. In an attempt to improve this we give preoperative PBI within a prospective trial.
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Acevedo-Henao CM, Heymann S, Rossier C, Garbay JR, Arnedos M, Balleyguier C, Ferchiou M, Marsiglia H, Bourgier C. [Conformal accelerated partial breast irradiation: state of the art]. Cancer Radiother 2012; 16:641-9. [PMID: 22727723 DOI: 10.1016/j.canrad.2012.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 03/09/2012] [Accepted: 03/27/2012] [Indexed: 11/26/2022]
Abstract
Breast conserving treatment (breast conserving surgery followed by whole breast irradiation) has commonly been used in early breast cancer since many years. New radiation modalities have been recently developed in early breast cancers, particularly accelerated partial breast irradiation. Three-dimensional conformal accelerated partial breast irradiation is the most commonly used modality of radiotherapy. Other techniques are currently being developed, such as intensity-modulated radiotherapy, arctherapy, and tomotherapy. The present article reviews the indications, treatment modalities and side effects of accelerated partial breast irradiation.
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Affiliation(s)
- C-M Acevedo-Henao
- Département de radiothérapie, institut de cancérologie Gustave-Roussy, Villejuif cedex, France
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Anbumani S, Palled SR, Prabhakar GS, Nambiraj NA, Pichandi A. Accelerated partial breast irradiation using external beam radiotherapy-A feasibility study based on dosimetric analysis. Rep Pract Oncol Radiother 2012; 17:200-6. [PMID: 24377024 DOI: 10.1016/j.rpor.2012.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 02/28/2012] [Accepted: 04/26/2012] [Indexed: 11/19/2022] Open
Abstract
AIM To investigate the feasibility of using External Beam radiotherapy for accelerated partial breast irradiation by a comparative tumour and normal tissue dose volume analysis with that of high dose rate interstitial brachytherapy. BACKGROUND Accelerated Partial Breast Irradiation (APBI) is more clinically appealing because of the reduced treatment course duration and the irradiated area. Brachytherapy application is more dependent on the clinician's expertise when it is practised free hand without image guidance and a template. It happens to be an invasive procedure with the use of local anaesthesia which adds patient discomfort apart from its cost compared to External Beam Radiotherapy. But APBI with brachytherapy is more commonly practised procedure compared to EBRT owing to its previous reults. Hence in this research study, we intend to explore the use of EBRT with the radiobiological corrections for APBI in the place of brachytherapy. It is done as a dosimetric comparison of Brachytherapy treatment plans with that of EBRT plans. MATERIALS AND METHODS The computed tomography images of 15 patients undergoing ISBT planning were simulated with conformal photon fields. Various dose volume parameters of each structure were obtained from the DVH generated in the brachytherapy and the simulated external beam planning which can correlate well with the late toxicity. The plan quality indices such as conformity index and homogeneity index for the target volume were computed from the dosimetric factors. The statistical p values for CI, HI and normal tissue dosimetric parameters were calculated and the confidence levels achievable were analysed. The dose prescribed in brachytherapy was 3400cGy in ten fractions. The equivalent prescription dose for the external beam radiotherapy planning was 3000cGy in five fractions applied with radiobiological correction. RESULTS All the fifteen patients were with complete lung data and six were with left sided tumours having complete cardiac data. The lung dosimetry data and the cardiac dosimetry data of the patients were studied. Lower percentages of lung and cardiac V 20 and V 5 volumes were obtained with conformal planning. The conformity of radiation dose to the tumour volume was akin to the interstitial brachytherapy planning. Moreover the external beam planning resulted in more homogenous dose distribution. For the sampled population, the statistical analysis showed a confidence level of 95% for using EBRT as an alternate to multi catheter ISBT. CONCLUSION The EBRT planning for Accelerated Partial Breast Irradiation was found to be technically feasible in the institution where the interstitial brachytherapy happens to be the only available technique as evident from the dose volume parameters and the statistical analysis.
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Azoury F, Heymann S, Acevedo C, Spielmann M, Vielh P, Garbay JR, Taghian AG, Marsiglia H, Bourgier C. Phase II trial of 3D-conformal accelerated partial breast irradiation: Lessons learned from patients and physicians’ evaluation. Radiother Oncol 2012; 103:193-8. [DOI: 10.1016/j.radonc.2012.03.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 03/09/2012] [Accepted: 03/20/2012] [Indexed: 11/27/2022]
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Njeh CF, Saunders MW, Langton CM. Accelerated partial breast irradiation using external beam conformal radiation therapy: A review. Crit Rev Oncol Hematol 2012; 81:1-20. [PMID: 21376625 DOI: 10.1016/j.critrevonc.2011.01.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Revised: 01/03/2011] [Accepted: 01/25/2011] [Indexed: 01/03/2023] Open
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Zurrida S, Leonardi MC, Del Castillo A, Lazzari R, Arnone P, Caldarella P. Accelerated partial breast irradiation in early breast cancer: focus on intraoperative treatment with electrons (ELIOT). WOMENS HEALTH 2011; 8:89-98. [PMID: 22171778 DOI: 10.2217/whe.11.86] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Wide tumor resection plus postoperative whole breast irradiation is standard treatment for early breast cancer. Irradiation decreases recurrence rates, but may cause poor cosmesis, breast pain, and cardiac and lung toxicity. Accelerated partial breast irradiation is increasingly used in the hope of increasing convenience, decreasing sequelae and maintaining cure rates. Intraoperative radiotherapy with electrons is an attractive accelerated partial breast irradiation technique because collimator placement is under the direct control of the surgeon who removes the tumor, the skin is spared, shielding protects the chest wall and complete irradiation can be given in a single intraoperative session (avoiding 5-7 weeks of whole breast irradiation). Intraoperative radiotherapy with electrons seems as safe as whole breast irradiation; however, long-term results on local control and survival are not available yet.
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Affiliation(s)
- Stefano Zurrida
- Division of Senology, European Institute of Oncology, Milan, Italy.
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El Nemr M, Heymann S, Verstraet R, Biron B, Azoury F, Marsiglia H, Bourgier C. Mixed modality treatment planning of accelerated partial breast irradiation: to improve complex dosimetry cases. Radiat Oncol 2011; 6:154. [PMID: 22074547 PMCID: PMC3262019 DOI: 10.1186/1748-717x-6-154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 11/10/2011] [Indexed: 12/25/2022] Open
Affiliation(s)
- Mohamed El Nemr
- Department of Radiation Oncology, Institut Gustave Roussy, 94805 Villejuif, France
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Débats autour du cancer du sein : « contre » la radiothérapie peropératoire. Cancer Radiother 2011; 15:453-4. [DOI: 10.1016/j.canrad.2011.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Accepted: 05/23/2011] [Indexed: 11/23/2022]
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Practical use of the extended no action level (eNAL) correction protocol for breast cancer patients with implanted surgical clips. Int J Radiat Oncol Biol Phys 2011; 82:1031-7. [PMID: 21420248 DOI: 10.1016/j.ijrobp.2010.12.059] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Revised: 12/10/2010] [Accepted: 12/27/2010] [Indexed: 11/20/2022]
Abstract
PURPOSE To describe the practical use of the extended No Action Level (eNAL) setup correction protocol for breast cancer patients with surgical clips and evaluate its impact on the setup accuracy of both tumor bed and whole breast during simultaneously integrated boost treatments. METHODS AND MATERIALS For 80 patients, two orthogonal planar kilovoltage images and one megavoltage image (for the mediolateral beam) were acquired per fraction throughout the radiotherapy course. For setup correction, the eNAL protocol was applied, based on registration of surgical clips in the lumpectomy cavity. Differences with respect to application of a No Action Level (NAL) protocol or no protocol were quantified for tumor bed and whole breast. The correlation between clip migration during the fractionated treatment and either the method of surgery or the time elapsed from last surgery was investigated. RESULTS The distance of the clips to their center of mass (COM), averaged over all clips and patients, was reduced by 0.9 ± 1.2 mm (mean ± 1 SD). Clip migration was similar between the group of patients starting treatment within 100 days after surgery (median, 53 days) and the group starting afterward (median, 163 days) (p = 0.20). Clip migration after conventional breast surgery (closing the breast superficially) or after lumpectomy with partial breast reconstructive techniques (sutured cavity). was not significantly different either (p = 0.22). Application of eNAL on clips resulted in residual systematic errors for the clips' COM of less than 1 mm in each direction, whereas the setup of the breast was within about 2 mm of accuracy. CONCLUSIONS Surgical clips can be safely used for high-accuracy position verification and correction. Given compensation for time trends in the clips' COM throughout the treatment course, eNAL resulted in better setup accuracies for both tumor bed and whole breast than NAL.
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Étude pilote française de phase II d’irradiation partielle accélérée du sein conformationnelle tridimensionnelle bi-fractionnée hebdomadaire de 40Gy. Cancer Radiother 2010; 14:718-26. [DOI: 10.1016/j.canrad.2010.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2010] [Revised: 04/13/2010] [Accepted: 05/13/2010] [Indexed: 11/19/2022]
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Njeh CF, Saunders MW, Langton CM. Accelerated Partial Breast Irradiation (APBI): A review of available techniques. Radiat Oncol 2010; 5:90. [PMID: 20920346 PMCID: PMC2958971 DOI: 10.1186/1748-717x-5-90] [Citation(s) in RCA: 144] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 10/04/2010] [Indexed: 01/08/2023] Open
Abstract
Breast conservation therapy (BCT) is the procedure of choice for the management of the early stage breast cancer. However, its utilization has not been maximized because of logistics issues associated with the protracted treatment involved with the radiation treatment. Accelerated Partial Breast Irradiation (APBI) is an approach that treats only the lumpectomy bed plus a 1-2 cm margin, rather than the whole breast. Hence because of the small volume of irradiation a higher dose can be delivered in a shorter period of time. There has been growing interest for APBI and various approaches have been developed under phase I-III clinical studies; these include multicatheter interstitial brachytherapy, balloon catheter brachytherapy, conformal external beam radiation therapy and intra-operative radiation therapy (IORT). Balloon-based brachytherapy approaches include Mammosite, Axxent electronic brachytherapy and Contura, Hybrid brachytherapy devices include SAVI and ClearPath. This paper reviews the different techniques, identifying the weaknesses and strength of each approach and proposes a direction for future research and development. It is evident that APBI will play a role in the management of a selected group of early breast cancer. However, the relative role of the different techniques is yet to be clearly identified.
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Affiliation(s)
- Christopher F Njeh
- Radiation Oncology Department, Texas Oncology Tyler, 910 East Houston Street, Tyler, Texas, USA
| | - Mark W Saunders
- Radiation Oncology Department, Texas Oncology Tyler, 910 East Houston Street, Tyler, Texas, USA
| | - Christian M Langton
- Physics, Faculty of Science and Technology, Queensland University of Technology, Brisbane, Australia
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