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Zukauskaite R, Kristensen MH, Eriksen JG, Johansen J, Samsøe E, Johnsen L, Lønkvist CK, Grau C, Hansen CR. Comparison of 3-year local control using DAHANCA radiotherapy guidelines before and after implementation of five millimetres geometrical GTV to high-dose CTV margin. Radiother Oncol 2024; 196:110284. [PMID: 38636711 DOI: 10.1016/j.radonc.2024.110284] [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: 12/21/2023] [Revised: 03/26/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
INTRODUCTION Treatment planning using a five-millimetre geometrical margin from GTV to high-dose CTV (CTV1) has been used in DAHANCA treatment centres since 2013. We aimed to evaluate changes in CTV1 volumes, local control (LC), and recurrence pattern after the implementation of five-millimetre geometrical margins nationally. MATERIALS AND METHODS 1,948 patients with pharyngeal, and laryngeal squamous cell carcinomas completed definitive IMRT-based treatment in 2010-2012 and 2013-2015 in three centres. The patient-specific margin was calculated as median surface distance from primary tumour GTV (GTV-T) to CTV1. Radiologically verified local recurrences were analysed using a centre of mass (COM) of the delineated recurrence volume, measuring the shortest distance between COM to GTV-T and CTV1 boundaries. RESULTS Median GTV-CTV1 was 0.9 (0.0-0.97) and 0.47 cm (0.4-0.5) for 2010-2012 and 2013-2015, respectively. Median CTV1 changed in three centres from 76, 28, 42 cm3 to 61, 53, 62 cm3 for 2010-2012 and 2013-2015, respectively. Local failures occurred at 247 patients during first three years after radiotherapy. The 3-year LC rate for 2010-2012 and 2013-2015 was 0.84 and 0.87 (p = 0.06). Out of 146 radiology-verified analysable local recurrences, 102 (69.9%) were inside the CTV1. In 74.6% and 91% of cases, the LRs were covered by 95% isodose in 2010-2012 and 2013-2015, respectively. CONCLUSION DAHANCA radiotherapy guidelines based on a geometrically generated isotropic CTV1 margin led to less variation in treatment volumes and between centres than previous guidelines. The transition towards consensus GTV-CTV1 margins did not influence local tumour control. The majority of local recurrences were inside CTV1 and covered by the prescription dose.
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Affiliation(s)
- Ruta Zukauskaite
- Department of Oncology, Odense University Hospital, Odense, Denmark.
| | | | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Eva Samsøe
- Department of Oncology, Zealand University Hospital, Næstved, Denmark
| | - Lars Johnsen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - Camilla Kjær Lønkvist
- Department of Oncology, Herlev and Gentofte Hospital, University of Copenhagen, Denmark
| | - Cai Grau
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Christian Rønn Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark; Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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Kristensen MH, Holm AIS, Hansen CR, Zukauskaite R, Samsøe E, Maare C, Johansen J, Primdahl H, Bratland Å, Kristensen CA, Andersen M, Overgaard J, Eriksen JG. High-dose loco-regional pattern of failure after primary radiotherapy in p16 positive and negative head and neck squamous cell carcinoma - A DAHANCA 19 study. Clin Transl Radiat Oncol 2024; 46:100772. [PMID: 38596816 PMCID: PMC11002542 DOI: 10.1016/j.ctro.2024.100772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/28/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024] Open
Abstract
Introduction Patients with failure after primary radiotherapy (RT) for head and neck squamous cell carcinoma (HNSCC) have a poor prognosis. This study investigates pattern of failure after primary curatively intended IMRT in a randomized controlled trial in relation to HPV/p16 status. Material and methods Patients with HNSCC of the oral cavity, oropharynx (OPSCC), hypopharynx or larynx were treated with primary curative IMRT (+/-cisplatin) and concomitant nimorazole between 2007 and 12. Of 608 patients, 151 had loco-regional failure within five years, from whom 130 pairs of scans (planning-CT and diagnostic failure scan) were collected and deformably co-registered. Point of origin-based pattern of failure analysis was conducted, including distance to CTV1 and GTV, and estimated dose coverage of the point of origin. Results Of 130 patients with pairs of scans, 104 (80 %) had at least one local or regional failure site covered by 95 % of prescribed dose and 87 (67 %) of the failures had point of origin within the high-dose CTV (CTV1). Of failures from primary p16 + OPSCC, the majority of both mucosal (84 %) and nodal (61 %) failures were covered by curative doses. For p16- tumors (oral cavity, OPSCC p16neg, hypopharynx and larynx), 75 % of mucosal and 66 % of nodal failures were high-dose failures. Conclusion Radioresistance is the primary cause of failure after RT for HNSCC irrespective of HPV/p16 status. Thus, focus on predictors for the response to RT is warranted to identify patients with higher risk of high-dose failure that might benefit from intensified treatment regimens.
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Affiliation(s)
- Morten Horsholt Kristensen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Anne Ivalu Sander Holm
- Department of Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Christian Rønn Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
- Danish Centre for Particle Therapy, Aarhus University Hospital, Palle Juul-Jensens Boulevard 25, 8200 Aarhus N, Denmark
- Department of Clinical Research, University of Southern Denmark, Sdr. Boulevard 29, 5000 Odense C, Denmark
| | - Ruta Zukauskaite
- Department of Oncology, Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
| | - Eva Samsøe
- Department of Oncology, Zealand University Hospital, Rådmandsengen 5, 4700 Næstved, Denmark
| | - Christian Maare
- Department of Oncology, Copenhagen University Hospital – Herlev, Borgmester Ib Juuls Vej 1, 2730 Herlev, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
| | - Hanne Primdahl
- Department of Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Åse Bratland
- Department of Oncology, Oslo University Hospital, Ullernchausseen 70, 0372 Oslo, Norway
| | - Claus Andrup Kristensen
- Department of Oncology, Copenhagen University Hospital – Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Maria Andersen
- Department of Oncology, Aalborg University Hospital, Hobrovej 18, 9000 Aalborg, Denmark
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
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Mackeprang PH, Bryjova K, Heusel AE, Henzen D, Scricciolo M, Elicin O. Consideration of image guidance in patterns of failure analyses of intensity-modulated radiotherapy for head and neck cancer: a systematic review. Radiat Oncol 2024; 19:30. [PMID: 38444011 PMCID: PMC10916111 DOI: 10.1186/s13014-024-02421-w] [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: 05/09/2023] [Accepted: 02/12/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Intensity-modulated radiation therapy (IMRT) is considered standard of care for head and neck squamous cell carcinoma (HNSCC). Improved conformity of IMRT and smaller margins, however, have led to concerns of increased rates of marginal failures. We hypothesize that while patterns of failure (PoF) after IMRT for HNSCC have been published before, the quality of patient positioning and image guided radiotherapy (IGRT) have rarely been taken into account, and their importance remains unclear. This work provides a systematic review of the consideration of IGRT in PoF studies after IMRT for HNSCC. MATERIALS AND METHODS A systematic literature search according to PRISMA guidelines was performed on PubMed for HNSCC, IMRT and PoF terms and conference abstracts from ESTRO and ASTRO 2020 and 2021 were screened. Studies were included if they related PoF of HNSCC after IMRT to the treated volumes. Data on patient and treatment characteristics, IGRT, treatment adaptation, PoF and correlation of PoF to IGRT was extracted, categorized and analyzed. RESULTS One-hundred ten studies were included. The majority (70) did not report any information on IGRT. The remainder reported daily IGRT (18), daily on day 1-3 or 1-5, then weekly (7), at least weekly (12), or other schemes (3). Immobilization was performed with masks (78), non-invasive frames (4), or not reported (28). The most common PoF classification was "in-field/marginal/out-of-field", reported by 76 studies. Only one study correlated PoF in nasopharyngeal cancer patients to IGRT. CONCLUSION The impact of IGRT on PoF in HNSCC is severely underreported in existing literature. Only one study correlated PoF to IGRT measures and setup uncertainty. Further, most PoF studies relied on outdated terminology ("in/out-of-field"). A clearly defined and up-to-date PoF terminology is necessary to evaluate PoFs properly, as is systematic and preferably prospective data generation. PoF studies should consistently and comprehensively consider and report on IGRT.
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Affiliation(s)
- Paul-Henry Mackeprang
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, 3010, Bern, Switzerland.
- Division of Medical Radiation Physics, Inselspital, Bern University Hospital and University of Bern, 3010, Bern, Switzerland.
| | - Katarina Bryjova
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, 3010, Bern, Switzerland
| | - Astrid E Heusel
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, 3010, Bern, Switzerland
| | - Dominik Henzen
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, 3010, Bern, Switzerland
- Division of Medical Radiation Physics, Inselspital, Bern University Hospital and University of Bern, 3010, Bern, Switzerland
| | - Melissa Scricciolo
- Radiation Oncology Division, Clinical Radiology Department, Ospedale dell'Angelo, Via Paccagnella 11, 30174, Venezia, Italy
| | - Olgun Elicin
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, 3010, Bern, Switzerland
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Yuvnik T, Chia L, Laura OC, Tieu TT, Mahesh K, Bradley B, Daron C, Chris W. Differences in geometric patterns of failure in human papillomavirus (HPV)-associated and HPV-non-associated oropharyngeal cancer after definitive radiotherapy. Head Neck 2024; 46:552-560. [PMID: 38108534 DOI: 10.1002/hed.27606] [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: 08/25/2023] [Revised: 11/28/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023] Open
Abstract
INTRODUCTION The aim of this study was to evaluate and compare the spatial pattern of locoregional recurrences in patients diagnosed with HPV-associated and HPV-non-associated oropharyngeal SCC (OPSCC) treated with definitive radiotherapy. METHODS AND MATERIALS Patients who had locoregional recurrence following definitive intensity-modulated radiation therapy were identified at a single tertiary institution. Target volumes were delineated according to the latest consensus international guidelines. Recurrences were classified into five categories based on radiotherapy dose distribution and target volume, using a previously validated methodology; type A (central high dose), type B (peripheral high dose), type C (central elective dose), type D (peripheral elective dose), and type E (extraneous dose). The types of failure were compared between p16-positive and p16-negative tumors using the Pearson chi-square test. RESULTS Fifty-eight locoregional recurrences were observed in 36 patients. The majority of recurrences were in nodal locations (66%, 38/58). Among these, 34 (59%) were classified as type A, 6 (10%) as type B, 9 (15%) as type C, 5 (9%) as type D, and 4 (7%) as type E failure. A significant difference was found in the types of failure between p16-positive and p16-negative tumors (X2 9.52, p = 0.044). p16-negative tumors were more likely to have recurrences in a peripheral location compared to p16-positive tumors (32% vs. 7%). p16-positive tumor were more likely to have extraneous recurrences (17% vs. 0%). CONCLUSION Our study results identified a significant difference in patterns of locoregional failure among patients diagnosed with oropharyngeal cancer following consensus-based tumor delineation and modern radiotherapy. Further confirmatory pattern of failure studies are required to enable greater individualization of radiotherapy for patients diagnosed with oropharyngeal malignancy in the future.
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Affiliation(s)
- Trada Yuvnik
- Calvary Mater Newcastle - Radiation Oncology, Waratah, New South Wales, Australia
- University of Sydney, Camperdown, New South Wales, Australia
| | - Low Chia
- Canberra Region Cancer Centre, Garran, Australian Capital Territory, Australia
| | - O' Connor Laura
- Calvary Mater Newcastle - Radiation Oncology, Waratah, New South Wales, Australia
- University of Newcastle, Newcastle, New South Wales, Australia
| | - Tieu Thi Tieu
- Calvary Mater Newcastle - Radiation Oncology, Waratah, New South Wales, Australia
- University of Newcastle, Newcastle, New South Wales, Australia
| | - Kumar Mahesh
- Calvary Mater Newcastle - Radiation Oncology, Waratah, New South Wales, Australia
- University of Newcastle, Newcastle, New South Wales, Australia
| | - Beeksma Bradley
- Calvary Mater Newcastle - Radiation Oncology, Waratah, New South Wales, Australia
- University of Newcastle, Newcastle, New South Wales, Australia
| | - Cope Daron
- University of Newcastle, Newcastle, New South Wales, Australia
- John Hunter Hospital - Surgical Services, New Lambton Heights, New South Wales, Australia
- Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Wratten Chris
- Calvary Mater Newcastle - Radiation Oncology, Waratah, New South Wales, Australia
- University of Newcastle, Newcastle, New South Wales, Australia
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Bollen H, Gulyban A, Nuyts S. Impact of consensus guidelines on delineation of primary tumor clinical target volume (CTVp) for head and neck cancer: Results of a national review project. Radiother Oncol 2023; 189:109915. [PMID: 37739317 DOI: 10.1016/j.radonc.2023.109915] [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: 06/15/2023] [Revised: 08/31/2023] [Accepted: 09/12/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND AND PURPOSE A significant interobserver variability (IOV) for clinical target volume of the primary tumor (CTVp) delineation was shown in a previous national review project. Since then, international expert consensus guidelines (CG) for the delineation of CTVp were published. The aim of this follow-up study was to 1) objectify the extent of implementation of the CG, 2) assess its impact on delineation quality and consistency, 3) identify any remaining ambiguities. MATERIALS AND METHODS All Belgian RT departments were invited to complete an online survey and submit CTVp for 5 reference cases. Organs at risk and GTV of the primary tumor were predefined. Margins, volumes, IOV between all participating centers (IOVall) and IOV compared to a reference consensus delineation (IOVref) were calculated and compared to the previous analysis. A qualitative analysis was performed assessing the correct interpretation of the CG for each case. RESULTS 17 RT centers completed both survey and delineations, of which 88% had implemented CG. Median DSCref for CTVp_total was 0.80-0.92. IOVall and IOVref improved significantly for the centers following CG (p = 0.005). IOVref for CTVp_high was small with a DSC higher than 0.90 for all cases. A significant volume decrease for the CTVp receiving 70 Gy was observed. Interpretation of CG was more accurate for (supra)glottic carcinoma. 60% of the radiation oncologists thinks clarification of CG is indicated. CONCLUSION Implementation of consensus guidelines for CTVp delineation is already fairly advanced on a national level, resulting in significantly increased delineation uniformity. The accompanying substantial decrease of CTV receiving high dose RT calls for caution and correct interpretation of CG. Clarification of the existing guidelines seems appropriate especially for oropharyngeal and hypopharyngeal carcinoma.
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Affiliation(s)
- Heleen Bollen
- KU Leuven, Dept. Oncology, Laboratory of Experimental Radiotherapy, & UZ Leuven, Radiation Oncology, B-3000, Leuven, Belgium.
| | - Akos Gulyban
- Medical Physics department, Institut Jules Bordet, Brussels, Belgium; Radiophysics and MRI physics laboratory, Faculty of Medicine, Free University of Bruxelles (ULB), Brussels, Belgium
| | - Sandra Nuyts
- KU Leuven, Dept. Oncology, Laboratory of Experimental Radiotherapy, & UZ Leuven, Radiation Oncology, B-3000, Leuven, Belgium
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Lindegaard AM, Håkansson K, Bernsdorf M, Gothelf AB, Kristensen CA, Specht L, Vogelius IR, Friborg J. A systematic review on clinical adaptive radiotherapy for head and neck cancer. Acta Oncol 2023; 62:1360-1368. [PMID: 37560990 DOI: 10.1080/0284186x.2023.2245555] [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: 05/23/2023] [Accepted: 08/01/2023] [Indexed: 08/11/2023]
Abstract
INTRODUCTION Head and neck cancer (HNC) patients' anatomy may undergo significant changes during radiotherapy (RT). This potentially affects dose distribution and compromises conformity between planned and delivered dose. Adaptive radiotherapy (ART) is a promising technique to overcome this problem but requires a significant workload. This systematic review aims to estimate the clinical and dosimetric benefits of ART using prospective data. MATERIAL AND METHODS A search on PubMed and Web of Science according to the PRISMA guidelines was made on Feb 6, 2023. Search string used was: 'adaptive radiotherapy head neck cancer'. English language filter was applied. All studies were screened for inclusion on title and abstract, and the full text was read and discussed in the research group in case of uncertainty. Inclusion criteria were a prospective ART strategy for HNC investigating clinical or dosimetric outcomes. RESULTS A total of 1251 articles were identified of which 15 met inclusion criteria. All included studies were published between 2010 and 2023 with a substantial diversity in design, endpoints, and nomenclature. The number of patients treated with ART was small with a median of 20 patients per study (range 4 to 86), undergoing 1-2 replannings. Mean dose to the parotid glands was reduced by 0.4-7.1 Gy. Maximum dose to the spinal cord was reduced by 0.5-4.6 Gy. Only five studies reported clinical outcome and disease control was excellent. Data on toxicity were ambiguous with some studies indicating reduced acute toxicity and xerostomia, while others found reduced quality of life in patients treated with ART. CONCLUSION The literature on clinical ART in HNC is limited. ART is associated with small reductions in doses to organs at risk, but the influence on toxicity and disease control is uncertain. There is a clear need for larger, prospective trials with a well-defined control group.
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Affiliation(s)
- Anne Marie Lindegaard
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Katrin Håkansson
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Mogens Bernsdorf
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Anita B Gothelf
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Claus A Kristensen
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Lena Specht
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Ivan R Vogelius
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Jeppe Friborg
- Department of Oncology, Centre for Cancer and Organ diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
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Krogh SL, Brink C, Lorenzen EL, Samsøe E, Vogelius IR, Zukauskaite R, Vrou Offersen B, Eriksen JG, Hansen O, Johansen J, Olloni A, Ruhlmann CH, Hoffmann L, Nissen HD, Skovmos Nielsen M, Andersen K, Grau C, Hansen CR. A national repository of complete radiotherapy plans: design, Results, and experiences. Acta Oncol 2023; 62:1161-1168. [PMID: 37850659 DOI: 10.1080/0284186x.2023.2270143] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 10/04/2023] [Indexed: 10/19/2023]
Abstract
BACKGROUND Previously, many radiotherapy (RT) trials were based on a few selected dose measures. Many research questions, however, rely on access to the complete dose information. To support such access, a national RT plan database was created. The system focuses on data security, ease of use, and re-use of data. This article reports on the development and structure, and the functionality and experience of this national database. METHODS AND MATERIALS A system based on the DICOM-RT standard, DcmCollab, was implemented with direct connections to all Danish RT centres. Data is segregated into any number of collaboration projects. User access to the system is provided through a web interface. The database has a finely defined access permission model to support legal requirements. RESULTS Currently, data for more than 14,000 patients have been submitted to the system, and more than 50 research projects are registered. The system is used for data collection, trial quality assurance, and audit data set generation.Users reported that the process of submitting data, waiting for it to be processed, and then manually attaching it to a project was resource intensive. This was accommodated with the introduction of triggering features, eliminating much of the need for users to manage data manually. Many other features, including structure name mapping, RT plan viewer, and the Audit Tool were developed based on user input. CONCLUSION The DcmCollab system has provided an efficient means to collect and access complete datasets for multi-centre RT research. This stands in contrast with previous methods of collecting RT data in multi-centre settings, where only singular data points were manually reported. To accommodate the evolving legal environment, DcmCollab has been defined as a 'data processor', meaning that it is a tool for other research projects to use rather than a research project in and of itself.
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Affiliation(s)
- Simon Long Krogh
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Carsten Brink
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Ebbe Laugaard Lorenzen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Eva Samsøe
- Department of Oncology, Radiotherapy, Zealand University Hospital, Naestved, Denmark
| | | | - Ruta Zukauskaite
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Birgitte Vrou Offersen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Danish Center for Particle Therapy, Aarhus, Denmark
| | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Olfred Hansen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Agon Olloni
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | | | - Lone Hoffmann
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Henrik Dahl Nissen
- Department of Oncology, University Hospital of Southern Denmark, Vejle, Denmark
| | | | - Karen Andersen
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
| | - Cai Grau
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Christian Rønn Hansen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Danish Center for Particle Therapy, Aarhus, Denmark
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Clasen K, Nachbar M, Gatidis S, Zips D, Thorwarth D, Welz S. Impact of MRI on target volume definition in head and neck cancer patients. Radiat Oncol 2023; 18:148. [PMID: 37674171 PMCID: PMC10483850 DOI: 10.1186/s13014-023-02326-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 08/03/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND Target volume definition for curative radiochemotherapy in head and neck cancer is crucial since the predominant recurrence pattern is local. Additional diagnostic imaging like MRI is increasingly used, yet it is usually hampered by different patient positioning compared to radiotherapy. In this study, we investigated the impact of diagnostic MRI in treatment position for target volume delineation. METHODS We prospectively analyzed patients who were suitable and agreed to undergo an MRI in treatment position with immobilization devices prior to radiotherapy planning from 2017 to 2019. Target volume delineation for the primary tumor was first performed using all available information except for the MRI and subsequently with additional consideration of the co-registered MRI. The derived volumes were compared by subjective visual judgment and by quantitative mathematical methods. RESULTS Sixteen patients were included and underwent the planning CT, MRI and subsequent definitive radiochemotherapy. In 69% of the patients, there were visually relevant changes to the gross tumor volume (GTV) by use of the MRI. In 44%, the GTV_MRI would not have been covered completely by the planning target volume (PTV) of the CT-only contour. Yet, median Hausdorff und DSI values did not reflect these differences. The 3-year local control rate was 94%. CONCLUSIONS Adding a diagnostic MRI in RT treatment position is feasible and results in relevant changes in target volumes in the majority of patients.
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Affiliation(s)
- Kerstin Clasen
- Department of Radiation Oncology, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.
| | - Marcel Nachbar
- Section for Biomedical Physics, Department of Radiation Oncology, University Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Sergios Gatidis
- Department of Radiology, University Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Daniel Zips
- Department of Radiation Oncology, University Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Daniela Thorwarth
- Section for Biomedical Physics, Department of Radiation Oncology, University Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Stefan Welz
- Department of Radiation Oncology, University Hospital Tübingen, University of Tübingen, Tübingen, Germany
- Department of Radiation Oncology, Marienhospital, Stuttgart, Germany
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Håkansson K, Lindegaard AM, Bernsdorf M, Gothelf A, Kristensen CA, Specht L, Friborg J, Vogelius I. A comparison of loco-regional relapse pattern in HPV positive vs negative oropharyngeal cancers following radiotherapy; relation to pretreatment FDG-PET and radiotherapy target volumes. Acta Oncol 2023; 62:1028-1035. [PMID: 37489000 DOI: 10.1080/0284186x.2023.2238889] [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: 05/10/2023] [Accepted: 07/11/2023] [Indexed: 07/26/2023]
Abstract
BACKGROUND Previous studies have shown that a large proportion of relapses in head-and neck squamous cell carcinoma (HNSCC) following radiotherapy (RT) occur in the pretreatment FDG-PET avid volume (GTV-PET). The aim of the current work was to see if this was valid also in an oropharynx squamous cell carcinoma (OPSCC) only population, and to compare the loco-regional relapse pattern between HPV positive and HPV negative patients. MATERIAL AND METHODS Among 633 OPSCC patients treated between 2009 and 2017, 46 patients with known HPV (p16) status and isolated loco-regional relapse were included. Oncologists contoured relapse volumes (RV) on relapse scans (PET/CT, CT or MR), which were thereafter deformed to match the anatomy of the planning CTs. The point of origin (center of volume) of the deformed RVs were determined and analyzed in relation to the RT target volumes (GTV-PET, GTV and CTVs). The relapse pattern was compared between HPV positive and HPV negative patients using Fischer's exact test. RESULTS Sixty RVs were contoured in the 46 patients. 55% (95% CI 44-67%) of relapses originated in GTV-PET, while the other RT volumes harbored 12% (5-20%) (GTV), 18% (9-28%) (high risk CTV) and 5% (0-11%) (low risk CTV) of relapses. Six relapses were found outside the RT target volumes. No significant difference in relapse pattern between HPV positive and HPV negative patients was found (p = .95). CONCLUSION There were no signs of difference in loco-regional relapse pattern between HPV positive and HPV negative patients. In agreement with previous findings, GTV-PET was the most frequent RT target volume of relapse.
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Affiliation(s)
- Katrin Håkansson
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Anne Marie Lindegaard
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Mogens Bernsdorf
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Anita Gothelf
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Claus Andrup Kristensen
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Lena Specht
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Jeppe Friborg
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Ivan Vogelius
- Department of Oncology, Centre for Cancer and Organ Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health Science, University of Copenhagen, Copenhagen, Denmark
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10
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García-Anaya MJ, Segado-Guillot S, Cabrera-Rodríguez J, Toledo-Serrano MD, Medina-Carmona JA, Gómez-Millán J. DOSE AND VOLUME DE-ESCALATION OF RADIOTHERAPY IN HEAD AND NECK CANCER. Crit Rev Oncol Hematol 2023; 186:103994. [PMID: 37061074 DOI: 10.1016/j.critrevonc.2023.103994] [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: 07/26/2022] [Revised: 03/16/2023] [Accepted: 04/11/2023] [Indexed: 04/17/2023] Open
Abstract
Radiotherapy plays a key role in the treatment of head and neck cancer. However, irradiation of the head and neck region is associated with high rates of acute and chronic toxicity. Technological advances have led to better visualisation of target volumes and critical structures and improved dose conformality in the treatment volume. Despite this, acute toxicity has not been substantially reduced and late toxicity has a significant impact on patients' quality of life. The greater radiosensitivity of tumours associated with the HPV and the development of new imaging techniques have encouraged research into new deintensified strategies to reduce the side effects of radiotherapy. The aim of this paper is to review the literature on the strategies of de-escalated treatment in dose and/or volume in head and neck cancer.
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Affiliation(s)
- M J García-Anaya
- Department of Radiation Oncology, Hospital Universitario Virgen de la Victoria, Malaga, Spain.
| | - S Segado-Guillot
- Department of Radiation Oncology, Hospital Universitario Virgen de la Victoria, Malaga, Spain
| | - J Cabrera-Rodríguez
- Department of Radiation Oncology, Hospital Universitario de Badajoz. Badajoz, Spain
| | - M D Toledo-Serrano
- Department of Radiation Oncology, Hospital Universitario Virgen de la Victoria, Malaga, Spain
| | - J A Medina-Carmona
- Department of Radiation Oncology, Hospital Universitario Virgen de la Victoria, Malaga, Spain
| | - J Gómez-Millán
- Department of Radiation Oncology, Hospital Universitario Virgen de la Victoria, Malaga, Spain; Instituto de Investigación Biomédica de Malaga, Malaga, Spain
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11
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Patient anatomy-specific trade-offs between sub-clinical disease coverage and normal tissue dose reduction in head-and-neck cancer. Radiother Oncol 2023; 182:109526. [PMID: 36764458 DOI: 10.1016/j.radonc.2023.109526] [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: 07/28/2022] [Revised: 01/02/2023] [Accepted: 01/30/2023] [Indexed: 02/11/2023]
Abstract
PURPOSE Risk of subclinical disease decreases with increasing distance from the GTV in head- and-neck squamous cell carcinoma (HNSCC). Depending on individual patient anatomy, OAR sparing could be improved by reducing target coverage in regions with low risk of subclinical spread. Using automated multi-criteria optimization, we investigate patient-specific optimal trade-offs between target periphery coverage and OAR sparing. METHODS VMAT plans for 39 HNSCC patients were retrospectively created following our clinical three-target-level protocol: high-risk (PTV1), intermediate-risk (PTV2, 5 mm expansion from PTV1), and elective (PTV3). A baseline plan fulfilling clinical constraints (D 99 % ≥95 % for all PTVs) was compared to three plans with reduced PTV2 coverage (goals: PTV2 D 99 % ≥90 % or 85 %, or no PTV2) at the outer edge of PTV2. Plans were compared on PTV D 99 %, OAR D mean, and NTCP (xerostomia/dysphagia). RESULTS Trade-offs between PTV2 coverage and OAR doses varied considerably between patients. For plans with PTV2 D 99 % -goal 90 %, median PTV2 D 99 % was 91.5 % resulting in xerostomia (≥grade 4) and dysphagia (≥grade 2) NTCP decrease of median [maximum] 1.9 % [5.3 %] and 1.1 % [4.1 %], respectively, compared to nominal PTV2 D 99 % -goal 95 %. For PTV2 D 99 % -goal 85 % median PTV D 99 % was 87 % with NTCP improvements of 4.6 % [9.9 %] and 1.5 % [5.4 %]. For no-margin plans, PTV2 D 99 % decreased to 83.3 % with NTCP reductions of 5.1 % [10.2 %] and 1.4 % [6.1 %]. CONCLUSION Clinically relevant, patient-specific reductions in OARs and NTCP were observed at limited cost in target under-coverage at the outermost PTV edge. Given the observed inter-patient variations, individual evaluation is warranted to determine whether trade- offs would benefit a specific patient.
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12
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Lycke Wind K, Garm Spindler KL, Maria Lutz C, Nyvang L, Kronborg C. Estimated dose to site of loco-regional recurrence after radiotherapy in anal cancer using point of origin methods. Phys Imaging Radiat Oncol 2023; 25:100424. [PMID: 36817982 PMCID: PMC9929855 DOI: 10.1016/j.phro.2023.100424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Background and purpose Loco-regional recurrence (LRR) dominates the failure pattern after curative radiotherapy in anal cancer. The aim of this study was to estimate dose of LRRs in anal cancer using a point of origin-based method. Method and materials Of 321 patients with squamous cell carcinoma of the anus, 31 patients with LRR (29 local recurrences and 5 regional lymph node recurrences) were available for analysis. The recurrence volumes were delineated on recurrence magnetic resonance imaging (rMRI). Rigid and subsequent deformable co-registration of planning computerised tomography scans and rMRI were performed. Point of origin was estimated as the centre of mass (COM) and an observer-based point of origin (obs-PO). Doses to COM and obs-PO, as well as the full recurrence volume, were estimated and the relation to target volumes was extracted. Results The median minimum dose to COM was 63.8 Gy (range 32.5-65.1 Gy) and 63.7 Gy (range 35.5-65.2 Gy) to obs-PO of local recurrences. COM was included in the high dose volume (64 Gy) in 86 % of cases, and obs-PO was included in 75 % of cases. There was no difference in minimum dose to COM and obs-PO, and the median distance between the two points was 3.3 mm (range 0.6-19.8 mm). No recurrences occurred in primarily boosted lymph nodes. Conclusion The majority of LLRs were located within the high dose volume indicating radioresistance as the primary cause of recurrence in anal cancer. No difference between the use of COM and obs-PO was evident.
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Affiliation(s)
- Karen Lycke Wind
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark,Department of Clinical Medicine, Faculty of Health, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark,Corresponding author.
| | - Karen-Lise Garm Spindler
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark,Department of Clinical Medicine, Faculty of Health, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Christina Maria Lutz
- Department of Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Lars Nyvang
- Department of Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Camilla Kronborg
- Department of Clinical Medicine, Faculty of Health, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark,Danish Centre for Particle Therapy, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
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13
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Sharma MB, Jensen K, Friborg J, Smulders B, Andersen E, Samsøe E, Johansen J, Hansen CR, Andersen M, Nielsen MS, Filtenborg MV, Ren J, Korreman SS, Overgaard J, Grau C. Target coverage and local recurrences after radiotherapy for sinonasal cancer in Denmark 2008-2015. A DAHANCA study. Acta Oncol 2022; 61:120-126. [PMID: 34979878 DOI: 10.1080/0284186x.2021.2022199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE The study aimed to investigate the pattern of failure and describe compromises in the definition and coverage of the target for patients treated with curatively intended radiotherapy (RT) for sinonasal cancer (SNC). METHODS AND MATERIAL Patients treated with curatively intended RT in 2008-2015 in Denmark for SNC were eligible for the retrospective cohort study. Information regarding diagnosis and treatment was retrieved from the national database of the Danish Head and Neck Cancer Group (DAHANCA). Imaging from the diagnosis of recurrences was collected, and the point of origin (PO) of the recurrent tumour was estimated. All treatment plans were collected and reviewed with the focus on target coverage, manual modifications of target volumes, and dose to organs at risk (OARs) above defined constraints. RESULTS A total of 184 patients were included in the analysis, and 76 (41%) relapsed. The majority of recurrences involved T-site (76%). Recurrence imaging of 39 patients was evaluated, and PO was established. Twenty-nine POs (74%) were located within the CTV, and the minimum dose to the PO was median 64.1 Gy (3.1-70.7). The criteria for target coverage (V95%) was not met in 89/184 (48%) of the CTV and 131/184 (71%) of the PTV. A total of 24% of CTVs had been manually modified to spare OARs of high-dose irradiation. No difference in target volume modifications was observed between patients who suffered recurrence and patients with lasting remission. CONCLUSION The majority of relapses after radical treatment of SNC were located in the T-site (the primary tumour site). Multiple compromises with regards to target coverage and tolerance levels for OARs in the sinonasal region, as defined from RT guidelines, were taken. No common practice in this respect could be derived from the study.
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Affiliation(s)
- Maja B. Sharma
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Kenneth Jensen
- Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Jeppe Friborg
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark
| | - Bob Smulders
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark
| | - Elo Andersen
- Department of Oncology, Herlev Hospital, Copenhagen, Denmark
| | - Eva Samsøe
- Department of Oncology, Herlev Hospital, Copenhagen, Denmark
- Department of Oncology, Zealand University Hospital, Naestved, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Christian R. Hansen
- Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Maria Andersen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - Martin S. Nielsen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - Mads V. Filtenborg
- Department of Otorhinolaryngology, Head and Neck Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Jintao Ren
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Stine S. Korreman
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Overgaard
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Cai Grau
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
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14
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Lassen P, Huang SH, Su J, Waldron J, Andersen M, Primdahl H, Johansen J, Kristensen CA, Andersen E, Eriksen JG, Hansen CR, Alsner J, Lilja-Fisher J, Bratman SV, Ringash J, Kim J, Hope A, Spreafico A, de Almeida J, Xu W, O'Sullivan B, Overgaard J. Treatment outcomes and survival following definitive (chemo)radiotherapy in HPV-positive oropharynx cancer: Large-scale comparison of DAHANCA vs PMH cohorts. Int J Cancer 2021; 150:1329-1340. [PMID: 34792199 DOI: 10.1002/ijc.33876] [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: 06/20/2021] [Revised: 10/17/2021] [Accepted: 11/02/2021] [Indexed: 11/05/2022]
Abstract
We compare outcomes in two large-scale contemporaneously treated HPV-positive (HPV+) oropharynx cancer (OPC) cohorts treated with definitive radiotherapy/chemoradiotherapy (RT/CRT). p16-confirmed HPV+ OPC treated between 2007 and 2015 at PMH and DAHANCA were identified. Locoregional failure (LRF), distant metastasis (DM), and overall survival (OS) were compared. Multivariable analysis (MVA) calculated adjusted-hazard-ratio (aHR) with 95% confidence interval (95% CI), adjusting for cohort, age, gender, performance status, smoking pack-years, T-category and N-category and chemotherapy. Compared to PMH (n = 701), DAHANCA (n = 1174) contained lower TNM-8T-categories (T1-T2: 77% vs 56%), N-categories (N0-N1: 77% vs 67%) and stages (stage I: 63% vs 44% (all P < .001). PMH used standard-fractionation CRT in 69% (481) while 31% (220) received hypofractionated or moderately accelerated RT-alone. All DAHANCA patients were treated with moderately accelerated RT; 96% (1129) received nimorazole (NIM) and 73% (856) concurrent weekly cisplatin. DAHANCA had shorter overall-treatment-time (P < .001), lower gross tumor (66-68 vs 70 Gy) and elective neck (50 vs 56 Gy) doses. Median follow-up was 4.8 years. DAHANCA had higher 5-year LRF (13% vs 7%, aHR = 0.47 [0.34-0.67]), comparable DM (7% vs 12%, aHR = 1.32 [0.95-1.82]), but better OS (85% vs 80%, aHR = 1.30 [1.01-1.68]). CRT patients had a lower risk of LRF (aHR 0.56 [0.39-0.82]), DM (aHR 0.70 [0.50-1.00]) and death (aHR 0.39 [0.29-0.52]) vs RT-alone. We observed exemplary outcomes for two large-scale trans-Atlantic HPV+ OPC cohorts treated in a similar manner. Concurrent chemotherapy was a strong, independent prognostic factor for all endpoints. Our findings underscore the need for a very careful approach to de-intensification of treatment for this disease.
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Affiliation(s)
- Pernille Lassen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark.,Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Shao Hui Huang
- Department of Radiation Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Jie Su
- Department of Biostatistics, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - John Waldron
- Department of Radiation Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Maria Andersen
- Department of Oncology, Aalborg Univeristy Hospital, Aalborg, Denmark
| | - Hanne Primdahl
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense Universitetshospital, Odense, Denmark
| | | | - Elo Andersen
- Department of Oncology, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark.,Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Jan Alsner
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Jacob Lilja-Fisher
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Scott V Bratman
- Department of Radiation Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Jolie Ringash
- Department of Radiation Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - John Kim
- Department of Radiation Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Andrew Hope
- Department of Radiation Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Anna Spreafico
- Division of Medical Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - John de Almeida
- Department of Otolaryngology - Head & Neck Surgery, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Wei Xu
- Department of Biostatistics, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Brian O'Sullivan
- Department of Radiation Oncology, Princess Margaret Hospital Cancer Centre/University of Toronto, Toronto, Ontario, Canada
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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15
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Bollen H, van der Veen J, Laenen A, Nuyts S. Recurrence Patterns After IMRT/VMAT in Head and Neck Cancer. Front Oncol 2021; 11:720052. [PMID: 34604056 PMCID: PMC8483718 DOI: 10.3389/fonc.2021.720052] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/30/2021] [Indexed: 01/04/2023] Open
Abstract
Purpose Intensity-modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT), two advanced modes of high-precision radiotherapy (RT), have become standard of care in the treatment of head and neck cancer. The development in RT techniques has markedly increased the complexity of target volume definition and accurate treatment delivery. The aim of this study was to indirectly investigate the quality of current TV delineation and RT delivery by analyzing the patterns of treatment failure for head and neck cancer patients in our high-volume RT center. Methods Between 2004 and 2014, 385 patients with pharyngeal, laryngeal, and oral cavity tumors were curatively treated with primary RT (IMRT/VMAT). We retrospectively investigated locoregional recurrences (LRR), distant metastases (DM), and overall survival (OS). Results Median follow-up was 6.4 years (IQR 4.7–8.3 years) during which time 122 patients (31.7%) developed LRR (22.1%) and DM (17.7%). The estimated 2- and 5-year locoregional control was 78.2% (95% CI 73.3, 82.3) and 74.2% (95% CI 69.0, 78.8). One patient developed a local recurrence outside the high-dose volume and five patients developed a regional recurrence outside the high-dose volume. Four patients (1.0%) suffered a recurrence in the electively irradiated neck and two patients had a recurrence outside the electively irradiated neck. No marginal failures were observed. The estimated 2- and 5-year DM-free survival rates were 83.3% (95% CI 78.9, 86.9) and 80.0% (95% CI 75.2, 84.0). The estimated 2- and 5-year OS rates were 73.6% (95% CI 68.9, 77.8) and 52. 6% (95% CI 47.3, 57.6). Median OS was 5.5 years (95% CI 4.5, 6.7). Conclusion Target volume definition and treatment delivery were performed accurately, as only few recurrences occurred outside the high-dose regions and no marginal failures were observed. Research on dose intensification and identification of high-risk subvolumes might decrease the risk of locoregional relapses. The results of this study may serve as reference data for comparison with future studies, such as dose escalation or proton therapy trials.
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Affiliation(s)
- Heleen Bollen
- Laboratory of Experimental Radiotherapy, Department of Oncology, KU Leuven, Leuven, Belgium.,Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Julie van der Veen
- Laboratory of Experimental Radiotherapy, Department of Oncology, KU Leuven, Leuven, Belgium.,Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Annouschka Laenen
- Leuven Biostatistics and Statistical Bioinformatics Center, KU Leuven, Leuven, Belgium
| | - Sandra Nuyts
- Laboratory of Experimental Radiotherapy, Department of Oncology, KU Leuven, Leuven, Belgium.,Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
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16
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Jensen K, Al-Farra G, Dejanovic D, Eriksen JG, Loft A, Hansen CR, Pameijer FA, Zukauskaite R, Grau C. Imaging for Target Delineation in Head and Neck Cancer Radiotherapy. Semin Nucl Med 2020; 51:59-67. [PMID: 33246540 DOI: 10.1053/j.semnuclmed.2020.07.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The definition of tumor involved volumes in patients with head and neck cancer poses great challenges with the increasing use of highly conformal radiotherapy techniques eg, volumetric modulated arc therapy and intensity modulated proton therapy. The risk of underdosing the tumor might increase unless great care is taken in the process. The information gained from imaging is increasing with both PET and MRI becoming readily available for the definition of targets. The information gained from these techniques is indeed multidimensional as one often acquire data on eg, metabolism, diffusion, and hypoxia together with anatomical and structural information. Nevertheless, much work remains to fully exploit the available information on a patient-specific level. Multimodality target definition in radiotherapy is a chain of processes that must be individually scrutinized, optimized and quality assured. Any uncertainties or errors in image acquisition, reconstruction, interpretation, and delineation are systematic errors and hence will potentially have a detrimental effect on the entire radiotherapy treatment and hence; the chance of cure or the risk of unnecessary side effects. Common guidelines and procedures create a common minimum standard and ground for evaluation and development. In Denmark, the treatment of head and neck cancer is organized within the multidisciplinary Danish Head and Neck Cancer Group (DAHANCA). The radiotherapy quality assurance group of DAHANCA organized a workshop in January 2020 with participants from oncology, radiology, and nuclear medicine from all centers in Denmark, treating patients with head and neck cancer. The participants agreed on a national guideline on imaging for target delineation in head and neck cancer radiotherapy, which has been approved by the DAHANCA group. The guidelines are available in the Supplementary. The use of multimodality imaging is being recommended for the planning of all radical treatments with a macroscopic tumor. 2-[18F]FDG-PET/CT should be available, preferable in the treatment position. The recommended MRI sequences are T1, T2 with and without fat suppression, and T1 with contrast enhancement, preferable in the treatment position. The interpretation of clinical information, including thorough physical examination as well as imaging, should be done in a multidisciplinary setting with an oncologist, radiologist, and nuclear medicine specialist.
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Affiliation(s)
- Kenneth Jensen
- Danish Center for Particle Therapy. Aarhus University Hospital, Denmark.
| | - Gina Al-Farra
- Department of Radiology, Herlev and Gentofte Hospital, Denmark
| | - Danijela Dejanovic
- Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Copenhagen University Hospital, Denmark
| | | | - Annika Loft
- Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Copenhagen University Hospital, Denmark
| | - Christian R Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Denmark; Institute of Clinical Research, University of Southern Denmark, Odense, Denmark; Danish Center for Particle Therapy. Aarhus University Hospital, Denmark
| | - Frank A Pameijer
- Department of Radiology, University Medical Center Utrecht, the Netherlands
| | - Ruta Zukauskaite
- Department of Oncology, Odense University Hospital, Denmark; Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Cai Grau
- Danish Center for Particle Therapy. Aarhus University Hospital, Denmark
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17
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Saksø M, Mortensen LS, Primdahl H, Johansen J, Kallehauge J, Hansen CR, Overgaard J. Influence of FAZA PET hypoxia and HPV-status for the outcome of head and neck squamous cell carcinoma (HNSCC) treated with radiotherapy: Long-term results from the DAHANCA 24 trial (NCT01017224). Radiother Oncol 2020; 151:126-133. [PMID: 32805273 DOI: 10.1016/j.radonc.2020.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/30/2020] [Accepted: 08/11/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Hypoxic tumor volumes can be visualized with 18F-FAZA PET/CT. In head and neck squamous cell carcinoma (HNSCC), hypoxia is important for the clinical outcome after primary radiotherapy (RT). The outcome is furthermore heavily influenced by the HPV/p16-positivity of oropharyngeal tumors (OPCp16+ tumors). The study purposes were (1) to report on locoregional failures within five years after primary RT in a prospective cohort stratified by both HPV/p16-status and PET hypoxia and (2) to characterize the failure site and the spatial association to PET hypoxia. MATERIAL AND METHODS From 2009 to 2011, 38 patients with non-metastatic SCC of the larynx, oro-, hypo- and nasopharynx completing primary RT were included in the prospective DAHANCA 24 trial (NCT01017224). Fifteen patients had OPCp16+ tumors. All were imaged with a static FAZA PET/CT prior to treatment. The hypoxia threshold was determined by a tumor-to-muscle ratio (TMR) of 1.6. Recurrences were documented histologically. Imaging of the recurrence was deformable fused with the pre-treatment FAZA PET/CT. The spatial information of recurrence- and hypoxic volumes were compared visually. RESULTS Sixteen patients had more hypoxic tumors (high tracer uptake, TMR ≥1.6) before treatment (42%). With a median follow-up of 7.8 years, nine locoregional recurrences were observed, of which seven were in patients with high-uptake tumors (44% and 9%, respectively, HR 5.8 [1.2-28.2]). The risk of locoregional recurrence was highest among patients with more hypoxic, non-OPCp16+ tumors (57% [21-94%]), with a risk difference of 45% [4-86%], when comparing to less hypoxic, non-OPCp16+ tumors. Eight patients had sufficient imaging of the recurrence for co-registration with the FAZA PET/CT. Six had hypoxic primary tumors, and in two, the recurrence was overlapping the baseline hypoxic subvolume. CONCLUSION HNSCC demonstrating a TMR ≥1.6 at baseline is significantly associated with treatment failure after primary RT. In addition to HPV/p16-status, FAZA PET/CT has potential for the selection of tumors requiring treatment intensification.
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Affiliation(s)
- Mette Saksø
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark.
| | | | - Hanne Primdahl
- Department of Oncology, Aarhus University Hospital, Denmark
| | | | | | | | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
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Saksø M, Jensen K, Andersen M, Hansen CR, Eriksen JG, Overgaard J. DAHANCA 28: A phase I/II feasibility study of hyperfractionated, accelerated radiotherapy with concomitant cisplatin and nimorazole (HART-CN) for patients with locally advanced, HPV/p16-negative squamous cell carcinoma of the oropharynx, hypopharynx, larynx and oral cavity. Radiother Oncol 2020; 148:65-72. [PMID: 32335364 DOI: 10.1016/j.radonc.2020.03.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 03/05/2020] [Accepted: 03/23/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND A phase I-II study to evaluate the feasibility and efficacy of intensified, primary radiotherapy (RT) for Locally Advanced Head and Neck Squamous Cell Carcinoma (LAHNSCC) employing dose escalation by hyperfractionation, acceleration of treatment time, concomitant chemotherapy and hypoxic modification. METHODS Patients with HPV/p16- LAHNSCC receiving primary hyperfractionated, accelerated RT, 76 Gy/56 fx, 10 fx/week for 5½ weeks, concomitant weekly cisplatin (40 mg/m2) and nimorazole (HART-CN) were included. Primary endpoint was locoregional failure (LRF). Secondary endpoints were overall survival (OS) and toxicity. RESULTS 50 patients received HART-CN from 2013 to 2017. Median age was 60 years. Most patients had stage IV hypo- or oropharynx cancer with a heavy smoking history. All oropharyngeal cancers were HPV/p16-negative. Ninety-eight percent of patients completed RT, but compliance to cisplatin and nimorazole was lower. Median observation time was 44 months. LRF was diagnosed in 10 patients. All LRFs were in the high-dose CTV. The 3-year actuarial LRF was 21%, and OS was 74%. The peak incidence of acute toxicity showed that 67% of patients experienced severe dysphagia, 61% severe mucositis, and 78% were equipped with feeding tubes. Late severe morbidity was seen in 7 of 29 recurrence-free patients with at least 3 years of followup, who presented with either severe dysphagia (n = 2), severe xerostomia (n = 1), severe fibrosis of the neck (n = 3) or osteoradionecrosis (n = 1). Three were still tube dependent. CONCLUSION HART-CN is feasible in patients with HPV/p16- LAHNSCC in good health. Although acute toxicity was pronounced, the proportion of patients with late toxicity was acceptable and outcome at 3 years encouraging.
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Affiliation(s)
- Mette Saksø
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark.
| | - Kenneth Jensen
- Department of Oncology, Aarhus University Hospital, Denmark
| | - Maria Andersen
- Department of Oncology, Aalborg University Hospital, Denmark
| | | | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark; Department of Oncology, Odense University Hospital, Denmark
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
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19
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Affiliation(s)
- Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Ludvig Paul Muren
- Department of Medical Physics, Aarhus University Hospital, Aarhus, Denmark
| | - Morten Høyer
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Cai Grau
- Department of Oncology and Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
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Hansen CR, Friborg J, Jensen K, Samsøe E, Johnsen L, Zukauskaite R, Grau C, Maare C, Johansen J, Primdahl H, Bratland Å, Kristensen CA, Andersen M, Eriksen JG, Overgaard J. NTCP model validation method for DAHANCA patient selection of protons versus photons in head and neck cancer radiotherapy. Acta Oncol 2019; 58:1410-1415. [PMID: 31432744 DOI: 10.1080/0284186x.2019.1654129] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Introduction: Prediction models using logistic regression may perform poorly in external patient cohorts. However, there is a need to standardize and validate models for clinical use. The purpose of this project was to describe a method for validation of external NTCP models used for patient selection in the randomized trial of protons versus photons in head and neck cancer radiotherapy, DAHANCA 35. Material and methods: Organs at risk of 588 patients treated primarily with IMRT in the randomized controlled DAHANCA19 trial were retrospectively contoured according to recent international recommendations. Dose metrics were extracted using MatLab and all clinical parameters were retrieved from the DAHANCA database. The model proposed by Christianen et al. to predict physician-rated dysphagia was validated through the closed testing, where change of the model intercept, slope and individual beta's were tested for significant prediction improvements. Results: Six months prevalence of dysphagia in the validation cohort was 33%. The closed testing procedure for physician-rated dysphagia showed that the Christianen et al. model needed an intercept refitting for the best match for the Danish patients. The intercept update increased the risk of dysphagia for the validation cohort by 7.9 ± 2.5% point. For the raw model performance, the Brier score (mean squared residual) was 0.467, which improved significantly with a new intercept to 0.415. Conclusions: The previously published Dutch dysphagia model needed an intercept update to match the Danish patient cohort. The implementation of a closed testing procedure on the current validation cohort allows quick and efficient validation of external NTCP models for patient selection in the future.
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Affiliation(s)
- C. R. Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Institute of Medical Physics, School of Physics, The University of Sydney, Sydney, Australia
| | - J. Friborg
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark
| | - K. Jensen
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - E. Samsøe
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Copenhagen University Hospital Herlev, Copenhagen, Denmark
| | - L. Johnsen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - R. Zukauskaite
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - C. Grau
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - C. Maare
- Department of Oncology, Copenhagen University Hospital Herlev, Copenhagen, Denmark
| | - J. Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - H. Primdahl
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Å. Bratland
- The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | | | - M Andersen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - J. G. Eriksen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - J. Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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Lilja-Fischer JK, Saksø M, Stougaard M, Steiniche T, Overgaard J. Distinguishing recurrence and new primary tumor as well as the origin of neck metastases in head and neck cancer clinical trials by targeted DNA sequencing. Acta Oncol 2019; 58:1506-1508. [PMID: 31271080 DOI: 10.1080/0284186x.2019.1629015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Jacob Kinggaard Lilja-Fischer
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Otorhinolaryngology – Head and Neck Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Mette Saksø
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Magnus Stougaard
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Torben Steiniche
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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Evensen JF, Sand Hansen H, Overgaard M, Johansen J, Andersen LJ, Overgaard J. DAHANCA 9 - a randomized multicenter study to compare accelerated normo-fractionated radiotherapy with accelerated hyperfractionated radiotherapy in patients with primary squamous cell carcinoma of the head and neck (HNSCC). Acta Oncol 2019; 58:1502-1505. [PMID: 31282236 DOI: 10.1080/0284186x.2019.1629012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - Hanne Sand Hansen
- Department of Oncology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Marie Overgaard
- Department of Oncology, Aarhus University Hospital, Aarhus N, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense University Hospital, Odense C, Denmark
| | | | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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23
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Andreassen C, Eriksen J, Jensen K, Hansen C, Sørensen B, Lassen P, Alsner J, Schack L, Overgaard J, Grau C. IMRT – Biomarkers for dose escalation, dose de-escalation and personalized medicine in radiotherapy for head and neck cancer. Oral Oncol 2018; 86:91-99. [DOI: 10.1016/j.oraloncology.2018.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 09/03/2018] [Indexed: 12/13/2022]
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Brink C, Lorenzen EL, Krogh SL, Westberg J, Berg M, Jensen I, Thomsen MS, Yates ES, Offersen BV. DBCG hypo trial validation of radiotherapy parameters from a national data bank versus manual reporting. Acta Oncol 2018; 57:107-112. [PMID: 29202666 DOI: 10.1080/0284186x.2017.1406140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION The current study evaluates the data quality achievable using a national data bank for reporting radiotherapy parameters relative to the classical manual reporting method of selected parameters. METHODS The data comparison is based on 1522 Danish patients of the DBCG hypo trial with data stored in the Danish national radiotherapy data bank. In line with standard DBCG trial practice selected parameters were also reported manually to the DBCG database. Categorical variables are compared using contingency tables, and comparison of continuous parameters is presented in scatter plots. RESULTS For categorical variables 25 differences between the data bank and manual values were located. Of these 23 were related to mistakes in the manual reported value whilst the remaining two were a wrong classification in the data bank. The wrong classification in the data bank was related to lack of dose information, since the two patients had been treated with an electron boost based on a manual calculation, thus data was not exported to the data bank, and this was not detected prior to comparison with the manual data. For a few database fields in the manual data an ambiguity of the parameter definition of the specific field is seen in the data. This was not the case for the data bank, which extract all data consistently. CONCLUSIONS In terms of data quality the data bank is superior to manually reported values. However, there is a need to allocate resources for checking the validity of the available data as well as ensuring that all relevant data is present. The data bank contains more detailed information, and thus facilitates research related to the actual dose distribution in the patients.
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Affiliation(s)
- Carsten Brink
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - Ebbe L. Lorenzen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - Simon Long Krogh
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - Jonas Westberg
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - Martin Berg
- Department of Medical Physics, Vejle Hospital, Vejle, Denmark
| | - Ingelise Jensen
- Department of Medical Physics, Aalborg University Hospital, Aalborg, Denmark
| | | | | | - Birgitte Vrou Offersen
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
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25
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Grau C, Høyer M, Poulsen PR, Muren LP, Korreman SS, Tanderup K, Lindegaard JC, Alsner J, Overgaard J. Rethink radiotherapy - BIGART 2017. Acta Oncol 2017; 56:1341-1352. [PMID: 29148908 DOI: 10.1080/0284186x.2017.1371326] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Cai Grau
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Morten Høyer
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Ludvig Paul Muren
- Department of Medical Physics, Aarhus University Hospital, Aarhus, Denmark
| | | | - Kari Tanderup
- Department of Medical Physics, Aarhus University Hospital, Aarhus, Denmark
| | | | - Jan Alsner
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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