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Berthet C, Lucia F, Bourbonne V, Schick U, Lecouillard I, Le Deroff C, Barateau A, de Crevoisier R, Castelli J. The dosimetric parameters impact on local recurrence in stereotactic radiotherapy for brain metastases. Br J Radiol 2024; 97:820-827. [PMID: 38377402 PMCID: PMC11025672 DOI: 10.1093/bjr/tqae029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 11/15/2023] [Accepted: 01/30/2024] [Indexed: 02/22/2024] Open
Abstract
OBJECTIVES Stereotactic radiotherapy (SRT) for brain metastases (BM) allows very good local control (LC). However, approximately 20%-30% of these lesions will recur. The objective of this retrospective study was to evaluate the impact of dosimetric parameters on LC in cerebral SRT. METHODS Patients treated with SRT for 1-3 BM between January 2015 and December 2018 were retrospectively included. A total of 349 patients with 538 lesions were included. The median gross tumour volume (GTV) was 2 cm3 (IQR, 0-7). The median biological effective dose with α/β = 10 (BED10) was 60 Gy (IQR, 32-82). The median prescription isodose was 71% (IQR, 70-80). Correlations with LC were examined using the Cox regression model. RESULTS The median follow-up period was 55 months (min-max, 7-85). Median overall survival was 17.8 months (IQR, 15.2-21.9). There were 95 recurrences and LC at 1 and 2 years was 87.1% (95% CI, 84-90) and 78.1% (95% CI, 73.9-82.4), respectively. Univariate analysis showed that systemic treatment, dose to 2% and 50% of the planning target volume (PTV), BED10 > 50 Gy, and low PTV and GTV volume were significantly correlated with better LC. In the multivariate analysis, GTV volume, isodose, and BED10 were significantly associated with LC. CONCLUSION These results show the importance of a BED10 > 50 Gy associated with a prescription isodose <80% to optimize LC during SRT for BM. ADVANCES IN KNOWLEDGE Isodose, BED, and GTV volume were significantly associated with LC. A low isodose improves LC without increasing the risk of radionecrosis.
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Affiliation(s)
- Camille Berthet
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
| | - François Lucia
- Radiation Oncology Department, University Hospital, Brest, 29200, France
| | - Vincent Bourbonne
- Radiation Oncology Department, University Hospital, Brest, 29200, France
| | - Ulrike Schick
- Radiation Oncology Department, University Hospital, Brest, 29200, France
| | | | - Coralie Le Deroff
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
| | - Anais Barateau
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
- Univ Rennes, CLCC Eugène Marquis, Inserm, LTSI – UMR 1099, Rennes, 35000, France
| | - Renaud de Crevoisier
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
- Univ Rennes, CLCC Eugène Marquis, Inserm, LTSI – UMR 1099, Rennes, 35000, France
| | - Joel Castelli
- Radiation Oncology Department, CLCC Eugene Marquis, Rennes, 35000, France
- Univ Rennes, CLCC Eugène Marquis, Inserm, LTSI – UMR 1099, Rennes, 35000, France
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Latorzeff I, Antoni D, Josset S, Noël G, Tallet-Richard A. Radiation therapy for brain metastases. Cancer Radiother 2021; 26:129-136. [PMID: 34955413 DOI: 10.1016/j.canrad.2021.11.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We present the update of the recommendations of the French society for radiation oncology on radiation therapy for the management of brain metastases. It has evolved in recent years and has become more complex. As the life expectancy of patients has increased and retreatments have become more frequent, side effects must be absolutely avoided. Cognitive side effects must in particular be prevented, and the most modern radiation therapy techniques must be used systematically. New prognostic classifications specific to the primary tumour of patients, advances in imaging and radiation therapy technology and new systemic therapeutic strategies, are making treatment more relevant. Stereotactic radiation therapy has supplanted whole-brain radiation therapy both for patients with metastases in place and for those who underwent surgery. Hippocampus protection is possible with intensity-modulated radiation therapy. Its relevance in terms of cognitive functioning should be more clearly demonstrated but the requirement for its use is constantly increasing. New targeted cancer treatment therapies based on the nature of the primitive have complicated the notion of the place and timing of radiation therapy and the discussion during multidisciplinary care meeting to indicate the best sequences is becoming a challenging issue as data on the interaction between treatments remain to be documented. In the end, although aimed at patients in the palliative phase, the management of brain metastases is one of the locations for which technical reflection is the most challenging and treatment become increasingly personalized.
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Affiliation(s)
- I Latorzeff
- Service de radiothérapie, groupe Oncorad Garonne, clinique Pasteur, l'« Atrium », 1, rue de la Petite-Vitesse, 31300 Toulouse, France; Centre régional de radiochirurgie stéréotaxique, CHU Rangueil, avenue Jean-Poulhès, 31052 Toulouse cedex, France.
| | - D Antoni
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France
| | - S Josset
- Service de physique médicale, institut de cancérologie de l'Ouest, Unicancer, 44805 Saint-Herblain, France
| | - G Noël
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France
| | - A Tallet-Richard
- Département universitaire de radiothérapie, institut Paoli-Calmettes, Unicancer, 232, boulevard de Sainte-Marguerite, 13273 Marseille, France
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3
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Under-recognized toxicities of cranial irradiation. Cancer Radiother 2021; 25:713-722. [PMID: 34274224 DOI: 10.1016/j.canrad.2021.06.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 06/21/2021] [Accepted: 06/24/2021] [Indexed: 11/23/2022]
Abstract
Cranial irradiation of primary or metastatic lesions is frequent, historically with 3D-conformal radiation therapy and now with stereotactic radiosurgery and intensity modulation. Evolution of radiotherapy technique is concomitant to systemic treatment evolution permitting long time survival. Thus, physicians have to face underestimated toxicities on long-survivor patients and unknown toxicities from combination of cranial radiotherapy to new therapeutics as targeted therapies and immunotherapies. This article proposes to develop these toxicities, without being exhaustive, to allow a better apprehension of cranial irradiation in current context.
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Nguyen MN, Noel G, Antoni D. La réirradiation des métastases cérébrales : revue des cinq dernières années. Cancer Radiother 2019; 23:531-540. [DOI: 10.1016/j.canrad.2019.07.144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 07/15/2019] [Indexed: 10/26/2022]
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Dahan O, Guichard F, Galland-Girodet S, Monteil P, Guichard P, Mollier O. [Interest of robotic stereotactic radiosurgery in the management of brain metastases: Results of a retrospective, single center analysis]. Neurochirurgie 2018; 64:415-421. [PMID: 30424956 DOI: 10.1016/j.neuchi.2018.05.180] [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: 10/20/2017] [Revised: 04/26/2018] [Accepted: 05/20/2018] [Indexed: 10/27/2022]
Abstract
PURPOSE The management of malignant brain metastases becomes a main issue for the treatment of patients, because of the survival extension related to the improvement in systemic treatments. Robotic stereotactic radiosurgery (RSR) is a new approach in this indication. The purpose of this analysis was to define the efficacy of RSR, in order to determine prognostic factors of survival and factors of response. PATIENTS AND METHODS It was a retrospective, single center (polyclinique de Bordeaux Nord Aquitaine) analysis performed from 2012 to 2015, involving patients with malignant brain metastases treated by RSR using the Cyberknife® technique. We analyzed the following parameters: response to RSR, prognostic and predictive factors of response, and survival. RESULTS A total of 72 RSRs were performed among 55 analyzed patients; 62 treatments were assessable with a median follow-up of 9.4 months. The main delivered dose on the 80%-isodose was 20Gy. A complete response was achieved in 40.3% of patients (stability or regression=83.9%). The overall survival was 13 months. The risk of failure was significantly correlated with the increase in metastasis size and non-adenocarcinoma histology. A performance status<2 was the main prognostic factor of survival. CONCLUSIONS The RSR allowed treating 3 to 5 brain metastases, avoiding an entire brain irradiation, and maintaining survival and quality of life.
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Affiliation(s)
- O Dahan
- Service d'oncoradiothérapie, polyclinique de Bordeaux Nord, 15, rue Claude-Boucher, 33000 Bordeaux, France.
| | - F Guichard
- Service d'oncoradiothérapie, polyclinique de Bordeaux Nord, 15, rue Claude-Boucher, 33000 Bordeaux, France
| | - S Galland-Girodet
- Service d'oncoradiothérapie, polyclinique de Bordeaux Nord, 15, rue Claude-Boucher, 33000 Bordeaux, France
| | - P Monteil
- Service de Neurochirurgie, centre hospitalier universitaire de Bordeaux, place Amélie-Raba-Léon, 33000 Bordeaux, France
| | - P Guichard
- Service d'oncoradiothérapie, polyclinique de Bordeaux Nord, 15, rue Claude-Boucher, 33000 Bordeaux, France
| | - O Mollier
- Service de Neurochirurgie, centre hospitalier universitaire de Bordeaux, place Amélie-Raba-Léon, 33000 Bordeaux, France
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Apport du guidage par l’image pour le repositionnement au cours de la radiothérapie des tumeurs encéphaliques. Cancer Radiother 2018; 22:593-601. [DOI: 10.1016/j.canrad.2018.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 06/29/2018] [Indexed: 11/20/2022]
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Brun L, Dupic G, Chassin V, Verrelle P, Lapeyre M, Biau J. [Radionecrosis following stereotactic radiotherapy of a 3-cm brain metastasis: Can we improve the dosimetric results?]. Cancer Radiother 2018; 22:423-428. [PMID: 30078613 DOI: 10.1016/j.canrad.2017.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/13/2017] [Accepted: 12/01/2017] [Indexed: 10/28/2022]
Abstract
Stereotactic radiotherapy is a major issue in the management of brain metastases. Radionecrosis is a major concern, especially for large lesions. Optimizing dosimetric parameters is essential to allow optimal local control rate while minimizing potential toxicity. We report the case of a 30-mm brain metastases treated with stereotactic radiotherapy after initial whole brain radiotherapy, complicated with symptomatic radionecrosis. A dose of 24Gy in three fractions on the 80% isodose were delivered using a dynamic conformal arc technique (Novalis TX®). We realized a dosimetric comparison with: (i) optimization of initial conformal arc plan, (ii) volumetric modulated arctherapy with coplanar arcs and (iii) volumetric modulated arctherapy with coplanar and non-coplanar arcs. The optimal dose planning in terms of planning target volume coverage (99.2%) and normal brain sparing (V24Gy=0.4cm3, V18Gy=6.5cm3, V10Gy=25.4cm3, V5=83.9cm3) was obtained with volumetric modulated arctherapy with coplanar and non-coplanar arcs. Volumetric modulated arctherapy-based stereotactic irradiation with coplanar and non-coplonar arcs seems an interesting option for the treatment of large brain metastases to optimize dosimetric parameters.
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Affiliation(s)
- L Brun
- Département de radiothérapie, centre Jean-Perrin, 58, rue Montalembert, 63011 Clermont-Ferrand, France
| | - G Dupic
- Département de radiothérapie, centre Jean-Perrin, 58, rue Montalembert, 63011 Clermont-Ferrand, France
| | - V Chassin
- Département de physique médicale, centre Jean-Perrin, 58, rue Montalembert, 63011 Clermont-Ferrand, France
| | - P Verrelle
- Département de radiothérapie, centre Jean-Perrin, 58, rue Montalembert, 63011 Clermont-Ferrand, France
| | - M Lapeyre
- Département de radiothérapie, centre Jean-Perrin, 58, rue Montalembert, 63011 Clermont-Ferrand, France
| | - J Biau
- Département de radiothérapie, centre Jean-Perrin, 58, rue Montalembert, 63011 Clermont-Ferrand, France; Université Clermont Auvergne, 49, boulevard François-Mitterrand, CS 60032, 63001 Clermont-Ferrand, France; Inserm, U1240 imagerie moléculaire et stratégies théranostiques (Imost), 58, rue Montalembert, 63005 Clermont-Ferrand, France.
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Royer P, Salleron J, Vogin G, Taillandier L, Clément-Duchêne C, Klein O, Faivre JC, Peiffert D, Bernier V. [Hypofractionated stereotactic radiotherapy for brain metastasis: Benefit of additional whole brain radiotherapy?]. Cancer Radiother 2017; 21:731-740. [PMID: 28711413 DOI: 10.1016/j.canrad.2017.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 02/01/2017] [Accepted: 02/28/2017] [Indexed: 02/03/2023]
Abstract
PURPOSE To study overall survival, risk of neurological death, local recurrence and development of new brain metastasis in patients treated for brain oligometastases with hypofractionated stereotactic radiotherapy with CyberKnife®, according to the association or not with an additional whole brain irradiation. PATIENTS AND METHODS Institutional retrospective study of 102 patients treated for one to three brain metastasis: 76 with exclusive hypofractionated stereotactic radiotherapy and 26 with hypofractionated stereotactic radiotherapy and whole brain irradiation. Objectives were assessed and compared between these two groups according to the Kaplan-Meier method and Cox model. RESULTS Median follow-up was 18.8 months. There were no difference between exclusive hypofractionated stereotactic radiotherapy and hypofractionated stereotactic radiotherapy with whole brain irradiation for overall survival (respective median 21.5 and 20.1 months), risk of neurological death (respectively 9.2% and 15.4% at one year). At one year: the risk of cerebral progressive disease was greater in the group receiving exclusive hypofractionated stereotactic radiotherapy (respectively 43.4% vs. 26.2%, P=0.043), the risk of local recurrence was 25% versus 17.6% (P=0.28) and the development of new brain metastasis was 23.7% versus 11.5% (P=0.27). After salvage treatments, crude local control was similar in the two groups, respectively 78.6% and 73.5%. Whole brain irradiation has been avoided for 72.4% of patients in the group receving exclusive hypofractionated stereotactic radiotherapy. CONCLUSION Whole brain irradiation improves local control of brain metastatic disease in addition to hypofractionated stereotactic radiotherapy. Sparing whole brain irradiation for salvage treatments only does not affect overall survival or risk of neurological death in selected patients with favourable prognosis.
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Affiliation(s)
- P Royer
- Département universitaire de radiothérapie-curiethérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne, 54519 Vandœuvre-lès-Nancy, France.
| | - J Salleron
- Cellule datamanagement et biostatistiques, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne, 54519 Vandœuvre-lès-Nancy, France
| | - G Vogin
- Département universitaire de radiothérapie-curiethérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne, 54519 Vandœuvre-lès-Nancy, France
| | - L Taillandier
- Service de neurologie, université de Lorraine, CHRU de Nancy, 29, avenue du Maréchal-de-Lattre-de-Tassigny, CO 60034, 54035 Nancy, France
| | - C Clément-Duchêne
- Département universitaire d'oncologie médicale, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne, 54519 Vandœuvre-lès-Nancy, France
| | - O Klein
- Service de neurochirurgie pédiatrique, hôpital d'enfants, université de Lorraine, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
| | - J-C Faivre
- Département universitaire de radiothérapie-curiethérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne, 54519 Vandœuvre-lès-Nancy, France
| | - D Peiffert
- Département universitaire de radiothérapie-curiethérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne, 54519 Vandœuvre-lès-Nancy, France
| | - V Bernier
- Département universitaire de radiothérapie-curiethérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne, 54519 Vandœuvre-lès-Nancy, France
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Keller A, Doré M, Antoni D, Menoux I, Thillays F, Clavier JB, Delpon G, Jarnet D, Bourrier C, Lefebvre F, Chibbaro S, Darié I, Proust F, Noël G. [Risk of radionecrosis after hypofractionated stereotactic radiotherapy targeting the postoperative resection cavity of brain metastases]. Cancer Radiother 2017; 21:377-388. [PMID: 28551018 DOI: 10.1016/j.canrad.2017.01.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 01/02/2017] [Accepted: 01/31/2017] [Indexed: 10/19/2022]
Abstract
PURPOSE To investigate the factors that potentially lead to brain radionecrosis after hypofractionated stereotactic radiotherapy targeting the postoperative resection cavity of brain metastases. METHODS AND MATERIALS A retrospective analysis conducted in two French centres, was performed in patients treated with trifractionated stereotactic radiotherapy (3×7.7Gy prescribed to the 70% isodose line) for resected brain metastases. Patients with previous whole-brain irradiation were excluded of the analysis. Radionecrosis was diagnosed according to a combination of criteria including clinical, serial imaging or, in some cases, histology. Univariate and multivariate analyses were performed to determine the predictive factors of radionecrosis including clinical and dosimetric variables such as volume of brain receiving a specific dose (V8Gy-V22Gy). RESULTS One hundred eighty-one patients, with a total of 189 cavities were treated between March 2008 and February 2015. Thirty-five patients (18.5%) developed radionecrosis after a median follow-up of 15 months (range: 3-38 months) after hypofractionated stereotactic radiotherapy. One third of patients with radionecrosis were symptomatic. Multivariate analysis showed that infra-tentorial location was predictive of radionecrosis (hazard ratio [HR]: 2.97; 95% confidence interval [95% CI]: 1.47-6.01; P=0.0025). None V8Gy-V22Gy was associated with appearance of radionecrosis, even if V14Gy trended toward significance (P=0.059). CONCLUSION Analysis of patients and treatment variables revealed that infratentorial location of brain metastases was predictive for radionecrosis after hypofractionated stereotactic radiotherapy for postoperative resection cavities.
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Affiliation(s)
- A Keller
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France
| | - M Doré
- Département de radiothérapie, institut de cancérologie de l'Ouest, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - D Antoni
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France; Laboratoire EA 3430, fédération de médecine translationnelle de Strasbourg, université de Strasbourg, 67000 Strasbourg, France
| | - I Menoux
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France
| | - F Thillays
- Département de radiothérapie, institut de cancérologie de l'Ouest, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - J B Clavier
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France
| | - G Delpon
- Département de radiothérapie, institut de cancérologie de l'Ouest, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - D Jarnet
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France
| | - C Bourrier
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France
| | - F Lefebvre
- Laboratoire de biostatistiques, faculté de médecine, 4, rue Kirschleger, 67085 Strasbourg cedex, France
| | - S Chibbaro
- Département de neurochirurgie, hôpital de Hautepierre, avenue Molière, 67200 Strasbourg, France
| | - I Darié
- Service de neurochirurgie, centre hospitalier régional d'Orléans, 1, rue Porte-Madeleine, 45000 Orléans, France
| | - F Proust
- Département de neurochirurgie, hôpital de Hautepierre, avenue Molière, 67200 Strasbourg, France
| | - G Noël
- Département universitaire de radiothérapie, centre Paul-Strauss, Unicancer, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg cedex, France; Laboratoire EA 3430, fédération de médecine translationnelle de Strasbourg, université de Strasbourg, 67000 Strasbourg, France.
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10
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Doré M, Martin S, Delpon G, Clément K, Campion L, Thillays F. Stereotactic radiotherapy following surgery for brain metastasis: Predictive factors for local control and radionecrosis. Cancer Radiother 2016; 21:4-9. [PMID: 27955888 DOI: 10.1016/j.canrad.2016.06.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 06/27/2016] [Accepted: 06/30/2016] [Indexed: 11/24/2022]
Abstract
PURPOSE To evaluate local control and adverse effects after postoperative hypofractionated stereotactic radiosurgery in patients with brain metastasis. METHODS We reviewed patients who had hypofractionated stereotactic radiosurgery (7.7Gy×3 prescribed to the 70% isodose line, with 2mm planning target volume margin) following resection from March 2008 to January 2014. The primary endpoint was local failure defined as recurrence within the surgical cavity. Secondary endpoints were distant failure rates and the occurrence of radionecrosis. RESULTS Out of 95 patients, 39.2% had metastatic lesions from a non-small cell lung cancer primary tumour. The median Graded Prognostic Assessment score was 3 (48% of patients). One-year local control rates were 84%. Factors associated with improved local control were no cavity enhancement on pre-radiation MRI (P<0.00001), planning target volume less than 12cm3 (P=0.005), Graded Prognostic Assessment score 2 or above (P=0.009). One-year distant cerebral control rates were 56%. Thirty-three percent of patients received whole brain radiation therapy. Histologically proven radionecrosis of brain tissue occurred in 7.2% of cases. The size of the preoperative lesion and the volume of healthy brain tissue receiving 21Gy (V21) were both predictive of the incidence of radionecrosis (P=0.010 and 0.036, respectively). CONCLUSION Adjuvant hypofractionated stereotactic radiosurgery to the postoperative cavity in patients with brain metastases results in excellent local control in selected patients, helps delay the use of whole brain radiation, and is associated with a relatively low risk of radionecrosis.
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Affiliation(s)
- M Doré
- Service de radiothérapie, institut de cancérologie de l'Ouest René-Gauducheau, 2, boulevard Jacques-Monod, 44805 Saint-Herblain, France.
| | - S Martin
- Service de neurochirurgie, centre hospitalier universitaire Laënnec, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - G Delpon
- Service de physique médical, institut de cancérologie de l'Ouest René-Gauducheau, 2, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - K Clément
- Service de radiothérapie, institut de cancérologie de l'Ouest René-Gauducheau, 2, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - L Campion
- Département de biostatistique, institut de cancérologie de l'Ouest René-Gauducheau, 2, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - F Thillays
- Service de radiothérapie, institut de cancérologie de l'Ouest René-Gauducheau, 2, boulevard Jacques-Monod, 44805 Saint-Herblain, France
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11
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[Imaging methods used in the differential diagnosis between brain tumour relapse and radiation necrosis after stereotactic radiosurgery of brain metastases: Literature review]. Cancer Radiother 2016; 20:837-845. [PMID: 28270324 DOI: 10.1016/j.canrad.2016.07.098] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 06/22/2016] [Accepted: 07/01/2016] [Indexed: 11/20/2022]
Abstract
After stereotactic radiosurgery for a cerebral metastasis, one of the dreaded toxicities is radionecrosis. In the follow-up of these patients, it is impossible to distinguish radiation necrosis from tumour relapse either clinically or with MRI. In current practice, many imaging methods are designed such as special sequences of MRI (dynamic susceptibility contrast perfusion and susceptibility-weighted imaging, diffusion), proton magnetic resonance spectroscopy, positron emission tomography, or more seldom 201-thallium single-photon emission computerized tomography. This article is a required literature analysis in order to establish a decision tree with the analysis of retrospective and prospective data.
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Latorzeff I, Antoni D, Gaudaire-Josset S, Feuvret L, Tallet-Richard A, Truc G, Noël G. Radiothérapie des métastases cérébrales. Cancer Radiother 2016; 20 Suppl:S80-7. [DOI: 10.1016/j.canrad.2016.07.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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