1
|
Allignet B, Pou P, Izarn F, Ray-Coquard I, Blay JY, Dufresne A, Brahmi M, Bouhamama A, Meeus P, Vaz G, Gouin F, Meurgey A, Karanian M, Moncharmont C, Waissi W, Sunyach MP. Efficacy and Safety of Adjuvant Radiotherapy in Re-excised Soft-tissue Sarcoma After Unplanned Resection. Oncologist 2023; 28:633-639. [PMID: 36971503 PMCID: PMC10322143 DOI: 10.1093/oncolo/oyad076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/21/2023] [Indexed: 07/20/2023] Open
Abstract
INTRODUCTION The objective of this study was to evaluate the efficacy and safety of adjuvant radiotherapy (aRT) in patients with soft-tissue sarcoma (STS) re-excised after unplanned tumor resection (UPR). MATERIALS AND METHODS From 2000 to 2015, we retrospectively evaluated patients with STS of limb or trunk who underwent post-UPR re-excision in our expert center and received or not aRT. RESULTS Median follow-up was 121 months (IQR 94-165). Among the 145 patients, 37 were not treated with aRT (no-RT) and 108 received aRT with a median radiation dose of 50 Gy (IQR 50-60). At 10 years, patients in the aRT and no-RT groups showed a cumulative incidence of local failure (10y-LF) of 14.7% and 37.7%, and a local recurrence-free survival (10y-LRFS) of 61.3% and 45.8%, respectively. Multivariate analysis identified aRT and age ≥70 years as independent predictors of both LF and LRFS, while grade 3 and deep-seated tumor were independent predictors of LRFS. In overall population, 10-year distant metastasis-free survival (10y-DMFS) and overall survival (10y-OS) were 63.7% and 69.4%. In multivariate analyses, age ≥70 years, grade 3, and deep-seated lesion were associated with shorter DMFS and OS. Acute severe adverse events were not significantly increased in aRT group (14.8% vs. 18.1%, P = .85) but dramatically increased if radiation dose exceeded 50 Gy (risk ratio 2.96 compared to ≤50 Gy, P = .04). CONCLUSION In STS patients re-excised after UPR, 50 Gy aRT was safe and associated with reduced LF and longer LRFS. It seems to be beneficial even in absence of residual disease or in absence of initial adverse prognostic factors.
Collapse
Affiliation(s)
- Benoît Allignet
- Corresponding author: Benoît Allignet, MD, Department of Radiation Oncology, Centre Léon Bérard, Lyon, France. Tel: +33 4 26 55 26 77; Fax: +33 4 78 78 51 40;
| | - Paul Pou
- Department of Radiation Oncology, Centre Léon Bérard, Lyon, France
- Department of Radiation Oncology, Ramsay Générale de Santé, Centre de Radiothérapie Haute Savoie Nord, Contamine Sur Arve, France
| | - Floriane Izarn
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | | | - Jean-Yves Blay
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | - Armelle Dufresne
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | - Mehdi Brahmi
- Department of Medical Oncology, Centre Léon Bérard, Lyon, France
| | | | - Pierre Meeus
- Department of Surgical Oncology, Centre Léon Bérard, Lyon, France
| | - Gualter Vaz
- Department of Surgical Oncology, Centre Léon Bérard, Lyon, France
| | - Francois Gouin
- Department of Surgical Oncology, Centre Léon Bérard, Lyon, France
| | | | - Marie Karanian
- Department of Biopathology, Centre Léon Bérard, Lyon, France
| | | | - Waisse Waissi
- Department of Radiation Oncology, Centre Léon Bérard, Lyon, France
| | | |
Collapse
|
2
|
Whiteside L, McDaid L, Hales RB, Rodgers J, Dubec M, Huddart RA, Choudhury A, Eccles CL. To see or not to see: Evaluation of magnetic resonance imaging sequences for use in MR Linac-based radiotherapy treatment. J Med Imaging Radiat Sci 2022; 53:362-373. [PMID: 35850925 DOI: 10.1016/j.jmir.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 06/01/2022] [Accepted: 06/20/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND/PURPOSE This work evaluated the suitability of MR derived sequences for use in online adaptive RT workflows on a 1.5 Tesla (T) MR-Linear Accelerator (MR Linac). MATERIALS/METHODS Non-patient volunteers were recruited to an ethics approved MR Linac imaging study. Participants attended 1-3 imaging sessions in which a combination of DIXON, 2D and 3D volumetric T1 and T2 weighted images were acquired axially, with volunteers positioned using immobilisation devices typical for radiotherapy to the anatomical region being scanned. Images from each session were appraised by three independent reviewers to determine optimal sequences over six anatomical regions: head and neck, female and male pelvis, thorax (lung), thorax (breast/chest wall) and abdomen. Site specific anatomical structures were graded by the perceived ability to accurately contour a typical organ at risk. Each structure was independently graded on a 4-point Likert scale as 'Very Clear', 'Clear', 'Unclear' or 'Not visible' by observers, consisting of radiographers (therapeutic and diagnostic) and clinicians. RESULTS From July 2019 to September 2019, 18 non-patient volunteers underwent 24 imaging sessions in the following anatomical regions: head and neck (n=3), male pelvis (n=4), female pelvis (n=5), lung/oesophagus (n=5) abdomen (n=4) and chest wall/breast (n=3). T2 sequences were the most preferred for perceived ability to contour anatomy in both male and female pelvis. For all other sites T1 weighted DIXON sequences were most favourable. CONCLUSION This study has determined the preferential sequence selection for organ visualisation, as a pre-requisite to our institution adopting MR-guided radiotherapy for a more diverse range of disease sites.
Collapse
Affiliation(s)
- Lee Whiteside
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom.
| | - Lisa McDaid
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom
| | - Rosie B Hales
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom
| | - John Rodgers
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom
| | - Michael Dubec
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom; Christie Medical Physics and Engineering, The Christie NHS Foundation Trust, United Kingdom
| | - Robert A Huddart
- The Institute of Cancer Research, London UK; The Royal Marsden, London, United Kingdom
| | - Ananya Choudhury
- Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom; Department of Clinical Oncology, The Christie NHS Foundation Trust, United Kingdom
| | - Cynthia L Eccles
- The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom; Division of Cancer Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
| |
Collapse
|