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Khalatbari H, Shulkin BL, Parisi MT. PET/CT and PET/MR in Soft Tissue Sarcoma: An Update. Semin Nucl Med 2024; 54:313-331. [PMID: 38423851 DOI: 10.1053/j.semnuclmed.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 01/24/2024] [Indexed: 03/02/2024]
Abstract
Soft tissue sarcomas account for 6%-8% of pediatric cancers. The rhabdomyosarcoma family is the most frequent soft tissue sarcoma in this age group accounting for 3% of pediatric cancers. Rhabdomyosarcomas are high-grade tumors with a high propensity to metastasize. The risk-adapted, multimodal therapeutic approach for rhabdomyosarcomas incorporates a combination of surgery, radiotherapy, and multi-agent cytotoxic chemotherapy. Soft tissue sarcomas other than rhabdomyosarcoma account for 3%-4% of pediatric cancers. The nonrhabdomyosarcoma soft tissue sarcomas include both low-grade and high-grade tumors. While surgery is the mainstay of therapy in most non-rhabdomyosarcoma soft tissue sarcomas, many cases require a multimodal therapeutic approach including radiotherapy and chemotherapy. In North America, most pediatric patients with soft tissue sarcomas are treated in Children's Oncology Group clinical trials. In this article, we will primarily focus on the staging, risk stratification, imaging recommendations, and interpretations in accordance with the Children's Oncology Group trials. We will review the results and recommendations of International Soft Tissue Sarcoma Database Consortium and European trials in relevant sections where they provide complementary guidelines.
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Affiliation(s)
- Hedieh Khalatbari
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN
| | | | - Marguerite T Parisi
- University of Washington School of Medicine and Seattle Children's Hospital, Seattle, WA
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2
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Guja KE, Behr G, Bedmutha A, Kuhn M, Nadel HR, Pandit-Taskar N. Molecular Imaging with PET-CT and PET-MRI in Pediatric Musculoskeletal Diseases. Semin Nucl Med 2024; 54:438-455. [PMID: 38688770 DOI: 10.1053/j.semnuclmed.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 05/02/2024]
Abstract
Molecular imaging has emerged as an integral part of oncologic imaging. Given the physiologic changes that precede anatomic changes, molecular imaging can enable early detection of disease and monitoring of response. [18F] Fluorodeoxyglucose (FDG) Positron emission tomography (PET) is the predominant molecular imaging modality used in oncologic assessment and can be performed using PET/CT or PET/MR. In pediatric patients, PET/MRI imaging is generally preferred due to low radiation exposure and PET/MRI is particularly advantageous for imaging musculoskeletal (MSK) diseases, as MRI provides superior characterization of tissue changes as compared to CT. In this article, we provide an overview of the typical role of PET CT/MRI in assessment of some common pediatric malignancies and benign MSK diseases with case examples. We also discuss the relative advantages of PET/MRI compared to PET/CT, and review published data with a primary focus on the use of PET/MR.
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Affiliation(s)
- Kip E Guja
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA
| | - Gerald Behr
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York; Weil Cornell Medical College, New York, New York
| | - Akshay Bedmutha
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Marlena Kuhn
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Helen R Nadel
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA
| | - Neeta Pandit-Taskar
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York; Weil Cornell Medical College, New York, New York.
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3
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Schoot RA, van Ewijk R, von Witzleben AA, Kao SC, Merks JHMH, Morosi C, Pace E, Shulkin BL, Ferrari A, von Kalle T, van Rijn RR, Weiss AR, Sparber-Sauer M, Ter Horst SAJ, McCarville MB. INternational Soft Tissue saRcoma ConsorTium (INSTRuCT) consensus statement: Imaging recommendations for the management of rhabdomyosarcoma. Eur J Radiol 2023; 166:111012. [PMID: 37541182 DOI: 10.1016/j.ejrad.2023.111012] [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: 05/19/2023] [Revised: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 08/06/2023]
Abstract
Rhabdomyosarcoma is the most common soft-tissue neoplasm in the pediatric population. The survival of children with rhabdomyosarcoma has only marginally improved over the past 25 years and remains poor for those with metastatic disease. A significant challenge to advances in treatment of rhabdomyosarcoma is the relative rarity of this disease, necessitating years to complete clinical trials. Progress can be accelerated by international cooperation and sharing national experiences. This necessitates agreement on a common language to describe patient cohorts and consensus standards to guide diagnosis, treatment, and response assessment. These goals formed the premise for creating the INternational Soft Tissue saRcoma ConsorTium (INSTRuCT) in 2017. Multidisciplinary members of this consortium have since developed international consensus statements on the diagnosis, treatment, and management of pediatric soft-tissue sarcomas. Herein, members of the INSTRuCT Diagnostic Imaging Working Group present international consensus recommendations for imaging of patients with rhabdomyosarcoma at diagnosis, at staging, and during and after completion of therapy. The intent is to promote a standardized imaging approach to pediatric patients with this malignancy to create more-reliable comparisons of results of clinical trials internationally, thereby accelerating progress in managing rhabdomyosarcoma and improving survival.
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Affiliation(s)
- Reineke A Schoot
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands.
| | - Roelof van Ewijk
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands.
| | - Anna-Anais von Witzleben
- Institute of Radiology Olgahospital, Zentrum für Kinder-, Jugend- und Frauenmedizin, Klinikum Stuttgart, Stuttgart, Germany.
| | - Simon C Kao
- Department of Radiology, The University of Iowa Carver College of Medicine, Iowa City, IA, USA.
| | - J H M Hans Merks
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands.
| | - Carlo Morosi
- Department of Radiology, Istituto Nazionale Tumori, Milan, Italy.
| | - Erika Pace
- Department of Radiology, The Royal Marsden NHS Foundation Trust, London, England, United Kingdom.
| | - Barry L Shulkin
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, USA.
| | - Andrea Ferrari
- Pediatric Oncology Unit, Medical Oncology and Hematology Department, Istituto Nazionale Tumori, Milan, Italy.
| | - Thekla von Kalle
- Institute of Radiology Olgahospital, Zentrum für Kinder-, Jugend- und Frauenmedizin, Klinikum Stuttgart, Stuttgart, Germany.
| | - Rick R van Rijn
- Department of Radiology and Nuclear Medicine, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands.
| | - Aaron R Weiss
- Department of Pediatrics, Division of Pediatric Hematology-Oncology, Maine Medical Center, Portland, ME, USA.
| | - Monika Sparber-Sauer
- Klinikum der Landeshauptstadt Stuttgart gKAöR, Olgahospital, Stuttgart Cancer Center, Zentrum für Kinder-, Jugend- und Frauenmedizin, Pädiatrie 5 (Pädiatrische Onkologie, Hämatologie, Immunologie), Stuttgart, Germany; University of Medicine Tübingen, Tübingen, Germany.
| | - Simone A J Ter Horst
- Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands; Department of Radiology and Nuclear Medicine, Wilhelmina Children's Hospital/University Medical Centre Utrecht, Utrecht, the Netherlands.
| | - M Beth McCarville
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, USA.
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4
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Tanturri de Horatio L, Zadig PK, von Brandis E, Ording Müller LS, Rosendahl K, Avenarius DFM. Whole-body MRI in children and adolescents: Can T2-weighted Dixon fat-only images replace standard T1-weighted images in the assessment of bone marrow? Eur J Radiol 2023; 166:110968. [PMID: 37478654 DOI: 10.1016/j.ejrad.2023.110968] [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: 05/12/2023] [Revised: 06/26/2023] [Accepted: 07/07/2023] [Indexed: 07/23/2023]
Abstract
OBJECTIVE When performing whole-body MRI for bone marrow assessment in children, optimizing scan time is crucial. The aim was to compare T2 Dixon fat-only and TSE T1-weighted sequences in the assessment of bone marrow high signal areas seen on T2 Dixon water-only in healthy children and adolescents. MATERIALS AND METHODS Whole-body MRIs from 196 healthy children and adolescents aged 6 to 19 years (mean 12.0) were obtained including T2 TSE Dixon and T1 TSE-weighted images. Areas with increased signal on T2 Dixon water-only images were scored using a novel, validated scoring system and classified into "minor" or "major" findings according to size and intensity, where "major" referred to changes easily being misdiagnosed as pathology in a clinical setting. Areas were assessed for low signal on T2 Dixon fat-only images and, after at least three weeks to avoid recall bias, on the T1-weighted sequence by two experienced pediatric radiologists. RESULTS 1250 high signal areas were evaluated on T2 Dixon water-only images. In 1159/1250 (92.7%) low signal was seen on both T2 Dixon fat-only and T1-weighted sequences while in 24 (1.9%) it was not present on either sequence, with an absolute agreement of 94.6%. Discordant findings were found in 67 areas, of which in 18 (1.5%) low signal was visible on T1-weighted images alone and in 49 (3.9%) on T2 Dixon fat-only alone. The overall kappa value between the two sequences was 0.39. The agreement was higher for major as compared to minor findings (kappa values of 0.69 and 0.29, respectively) and higher for the older age groups. CONCLUSION T2 Dixon fat-only can replace T1-weighted sequence on whole-body MRI for bone marrow assessment in children over the age of nine, thus reducing scan time.
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Affiliation(s)
- Laura Tanturri de Horatio
- Department of Clinical Medicine, UiT, The Arctic University of Norway, 9037, Tromsø, Norway; Department of Pediatric Radiology, Ospedale Pediatrico Bambino Gesù, 00165 Rome, Italy.
| | - Pia K Zadig
- Department of Clinical Medicine, UiT, The Arctic University of Norway, 9037, Tromsø, Norway; Department of Radiology, University Hospital of North-Norway, 9038 Tromsø, Norway
| | - Elisabeth von Brandis
- Division of Radiology and Nuclear Medicine, Oslo University Hospital, 0372 Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway
| | | | - Karen Rosendahl
- Department of Clinical Medicine, UiT, The Arctic University of Norway, 9037, Tromsø, Norway; Department of Radiology, University Hospital of North-Norway, 9038 Tromsø, Norway
| | - Derk F M Avenarius
- Department of Clinical Medicine, UiT, The Arctic University of Norway, 9037, Tromsø, Norway; Department of Radiology, University Hospital of North-Norway, 9038 Tromsø, Norway
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Mendoza H, Nosov A, Pandit-Taskar N. Molecular imaging of sarcomas with FDG PET. Skeletal Radiol 2023; 52:461-475. [PMID: 36173459 DOI: 10.1007/s00256-022-04182-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 02/02/2023]
Abstract
Sarcoma comprises a heterogenous entity of musculoskeletal malignancies arising from a mesenchymal origin. The diagnosis and management of pediatric sarcoma requires a multidisciplinary approach and the use of various imaging modalities including CT, MRI and FDG PET scans. FDG PET/CT (FDG PET), as a metabolic imaging, complements and provides superior diagnostic information as against other imaging modalities alone. Advantages of FDG PET in differentiating malignant sarcomatous lesions from benign lesions, and value in staging and restaging have been noted in several studies. The use of FDG PET in clinical management has increased over the years. The data on prognostication of outcomes or predicting responders to therapy with FDG PET in patients with sarcoma is somewhat limited. This review will focus on the pearls and pitfalls of FDG PET and role of FDG PET in initial extent of disease assessment, treatment response, and surveillance imaging pertaining to osteosarcoma, chondrosarcoma, Ewing's sarcoma, and rhabdomyosarcoma. We also discuss the limitations and unmet needs of FDG PET in the management of patients with sarcoma.
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Affiliation(s)
- Humberto Mendoza
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Anton Nosov
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Neeta Pandit-Taskar
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
- Department of Radiology, Weill Cornell Medical College, New York, NY, USA.
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Affinita MC, Merks JHM, Chisholm JC, Haouy S, Rome A, Rabusin M, Brennan B, Bisogno G. Rhabdomyosarcoma with unknown primary tumor site: A report from European pediatric Soft tissue sarcoma Study Group (EpSSG). Pediatr Blood Cancer 2022; 69:e29967. [PMID: 36094298 DOI: 10.1002/pbc.29967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/14/2022] [Accepted: 08/05/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND Rhabdomyosarcoma (RMS) is an aggressive malignancy, and 20% of children present with metastases at diagnosis. Patients presenting with disseminated disease very occasionally have no clear evidence of a primary tumor mass. As these patients have rarely been investigated, we report on a series of patients with RMS and unknown primary tumor site registered in the Metastatic (MTS) RMS 2008 protocol (October 2008 to December 2016) coordinated by the European pediatric Soft tissue sarcoma Study Group. METHODS Patients were administered nine cycles of induction chemotherapy, and 48 weeks of maintenance chemotherapy. Surgery and/or radiotherapy were planned after the first assessment of tumor response, and implemented after six cycles of chemotherapy. If feasible, radiotherapy to all sites of metastasis was recommended. RESULTS We identified 10 patients with RMS and unknown primary site, most of them adolescents (median age 15.8 years, range: 4.6-20.4). Nine had fusion-positive alveolar RMS. Multiple organ involvement was identified in seven patients, two only had bone marrow disease, and one only had leptomeningeal dissemination. All patients were given chemotherapy, four were irradiated, and none had surgery. Three patients underwent allogeneic bone marrow transplantation. At the time of this analysis, only two patients are alive in complete remission: one had received radiotherapy; and one had a bone marrow transplant. CONCLUSIONS RMS with unknown primary tumor occurs mainly in adolescents and is typically fusion-positive alveolar. Radiotherapy may be important, but survival is poor and patients should be offered enrollment in investigational trials.
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Affiliation(s)
- Maria Carmen Affinita
- Pediatric Hematology, Oncology and Stem Cell Transplant Division, Department of Women's and Children's Health University Hospital of Padova, Padua, Italy
| | | | - Julia C Chisholm
- Children and Young People's Unit, The Royal Marsden NHS Foundation Trust and Institute of Cancer Research, Sutton, UK
| | - Stèphanie Haouy
- Department of Pediatric Oncology, Montpellier University Hospital Centre, Montpellier, France
| | - Angelique Rome
- Department of Pediatric Immunology, Hematology and Oncology, Children's Hospital of La Timone, AP-HM, Marseille, France
| | - Marco Rabusin
- Department of Pediatric, Hemato-Oncology Unit, IRCCS Burlo Garofolo, Trieste, Italy
| | - Bernadette Brennan
- Pediatric Oncology, Royal Manchester Children's Hospital, Manchester, UK
| | - Gianni Bisogno
- Pediatric Hematology, Oncology and Stem Cell Transplant Division, Department of Women's and Children's Health University Hospital of Padova, Padua, Italy
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Improving protocols for whole-body magnetic resonance imaging: oncological and inflammatory applications. Pediatr Radiol 2022:10.1007/s00247-022-05478-5. [PMID: 35982340 DOI: 10.1007/s00247-022-05478-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/16/2022] [Accepted: 07/29/2022] [Indexed: 10/15/2022]
Abstract
Whole-body MRI is increasingly used in the evaluation of a range of oncological and non-oncological diseases in infants, children and adolescents. Technical innovation in MRI scanners, coils and sequences have enabled whole-body MRI to be performed more rapidly, offering large field-of-view imaging suitable for multifocal and multisystem disease processes in a clinically useful timeframe. Together with a lack of ionizing radiation, this makes whole-body MRI especially attractive in the pediatric population. Indications include lesion detection in cancer predisposition syndrome surveillance and in the workup of children with known malignancies, and diagnosis and monitoring of a host of infectious and non-infectious inflammatory conditions. Choosing which patients are most likely to benefit from this technology is crucial, but so is adjusting protocols to the patient and disease to optimize lesion detection. The focus of this review is on protocols and the elements impacting image acquisition in pediatric whole-body MRI. We consider the practical aspects, from scanner and coil selection to patient positioning, single-center generic and indication-specific protocols with technical parameters, motion reduction strategies and post-processing. When optimized, collectively these lead to better standardization of whole-body MRI, and when married to systematic analysis and interpretation, they can improve diagnostic accuracy.
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8
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Scheer M, Hallmen E, Vokuhl C, Fuchs J, Tunn PU, Münter M, Timmermann B, Bauer S, Henssen AG, Kazanowska B, Niggli F, Ladenstein R, Ljungman G, Eggert A, Klingebiel T, Koscielniak E. Pre-operative radiotherapy is associated with superior local relapse-free survival in advanced synovial sarcoma. J Cancer Res Clin Oncol 2022; 149:1717-1731. [PMID: 35687182 PMCID: PMC10097790 DOI: 10.1007/s00432-022-04051-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/29/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Optimization of local therapies in synovial sarcoma (SS) considered unresectable at diagnosis is needed. We evaluated the effects of neoadjuvant versus adjuvant radiation versus surgery only on long-term outcomes. METHODS Patients with macroscopic SS tumors before chemotherapy (IRS-group-III) in the trials CWS-81, CWS-86, CWS-91, CWS-96, CWS-2002-P and SoTiSaR-registry were analyzed. Local therapies were scheduled after 3 neoadjuvant chemotherapy cycles. RESULTS Median age of 145 patients was 14.5 years. 106 survivors had median follow-up of 7.0 years. Tumor site was 96 extremities, 19 head-neck, 16 shoulder/hip, 14 trunk. Tumors were < 3 cm in 16, 3-5 cm in 28, 5-10 cm in 55, > 10 cm in 34 patients. In a secondary resection during chemotherapy, R0-status was accomplished in 82, R1 in 30, R2 in 21 (12 missing). Radiotherapy was administered to 115 (R0 61, R1 29, R2 20, missing 5), thereof 57 before and 52 after tumor resection. 23 were treated with surgery only. For all patients, 5 year event-free (EFS) and overall survival (OS) was 68.9% ± 7.6 (95%CI) and 79.1% ± 6.9. To establish independent significance, tumor site, size, surgical results and sequencing of local therapies were analyzed in a Cox regression analysis. Variables associated with EFS and OS are site, size and sequencing of local therapies. Variables associated with local recurrence are site, surgical results and sequencing of local therapies. The only variable associated with suffering metastatic recurrence is tumor size. CONCLUSION Differences in sequencing of local therapy procedures are independently associated with outcomes. Best local control is achieved when tumors are irradiated pre-operatively and undergo R0 or R1 resection thereafter.
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Affiliation(s)
- Monika Scheer
- Department of Pediatric Hematology and Oncology, Charité -Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Erika Hallmen
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | | | - Jörg Fuchs
- Department of Pediatric Surgery and Urology, University Children's Hospital, Tuebingen, Germany
| | - Per-Ulf Tunn
- Department of Tumororthopedics, Helios-Klinikum, Berlin-Buch, Germany
| | - Marc Münter
- Department of Radiation Oncology, Klinikum Stuttgart, Stuttgart, Germany
| | - Beate Timmermann
- Department of Particle Therapy, University Hospital Essen, West German Proton Therapy Centre Essen (WPE), West German Cancer Center (WTZ), German Cancer Consortium (DKTK), Essen, Germany
| | - Sebastian Bauer
- Sarcoma Center, West German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Anton George Henssen
- Department of Pediatric Hematology and Oncology, Charité -Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | | | - Felix Niggli
- Department of Pediatric Oncology, University of Zuerich, Zuerich, Switzerland
| | - Ruth Ladenstein
- St. Anna Kinderspital and St. Anna Kinderkrebsforschung E.V, Vienna, Austria
| | - Gustaf Ljungman
- Pediatric Oncology, Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Angelika Eggert
- Department of Pediatric Hematology and Oncology, Charité -Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Thomas Klingebiel
- Hospital for Children and Adolescents, Goethe-University Frankfurt (Main), Frankfurt, Germany
| | - Ewa Koscielniak
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany.,University of Tuebingen, Tuebingen, Germany
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17/m mit unklarer, schmerzhafter skrotaler Schwellung. Monatsschr Kinderheilkd 2021. [DOI: 10.1007/s00112-021-01346-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chekhlabi N, Toughza J, Dini N. Primary Rhabdomyosarcoma of the Pleura: A Case Report and Review of the Literature. Cureus 2021; 13:e12491. [PMID: 33564502 PMCID: PMC7861058 DOI: 10.7759/cureus.12491] [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] [Indexed: 11/10/2022] Open
Abstract
Rhabdomyosarcoma is a malignant tumor of striated muscle tissue that can exceptionally present in the pleura. Its prognosis is generally poor. We report a case of an eight-year-old child admitted for a persistent dry cough which had progressed for three weeks, complicated by breathing difficulties and a deterioration in general condition. He had a history of recent contact with an uncle with pulmonary tuberculosis. Clinical examination on admission revealed right pleural effusion syndrome with moderate respiratory repercussion. The biological assessment shows moderate inflammation and a very high level of lactate dehydrogenase (LDH). Radiologically, there was abundant right pleurisy with intra-pleural nodular masses without ipsilateral pulmonary invasion or other distant localization. Pleural puncture reveals exudative lymphocytic fluid with negative tuberculous polymerase chain reaction (PCR) and atypical cells in cytology. Biopsy of the pleural mass showed pleural rhabdomyosarcoma of the alveolar type. The pet scan found bone metastases at two costal arches. After conditioning, the child received several courses of chemotherapy. The clinical and radiological outcome was favorable. This case is reported in view of its rarity and originality. We conclude that early diagnosis and treatment greatly improves the prognosis of this aggressive tumor.
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Affiliation(s)
- Nabila Chekhlabi
- Pediatric Department, International University Hospital Cheikh Khalifa, Mohammed VI University of Health Sciences, Casablanca, MAR
| | - Jihane Toughza
- Pediatric Oncology Department, International University Hospital Cheikh Khalifa, Mohammed VI University of Health Sciences, Casablanca, MAR
| | - Nezha Dini
- Pediatric Department, Faculty of Medicine and Pharmacy, Mohammed V University, Rabat, MAR
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European guideline for imaging in paediatric and adolescent rhabdomyosarcoma - joint statement by the European Paediatric Soft Tissue Sarcoma Study Group, the Cooperative Weichteilsarkom Studiengruppe and the Oncology Task Force of the European Society of Paediatric Radiology. Pediatr Radiol 2021; 51:1940-1951. [PMID: 34137936 PMCID: PMC8426307 DOI: 10.1007/s00247-021-05081-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 01/25/2021] [Accepted: 04/14/2021] [Indexed: 02/08/2023]
Abstract
Appropriate imaging is essential in the treatment of children and adolescents with rhabdomyosarcoma. For adequate stratification and optimal individualised local treatment utilising surgery and radiotherapy, high-quality imaging is crucial. The paediatric radiologist, therefore, is an essential member of the multi-disciplinary team providing clinical care and research. This manuscript presents the European rhabdomyosarcoma imaging guideline, based on the recently developed guideline of the European Paediatric Soft Tissue Sarcoma Study Group (EpSSG) Imaging Committee. This guideline was developed in collaboration between the EpSSG Imaging Committee, the Cooperative Weichteilsarkom Studiengruppe (CWS) Imaging Group, and the Oncology Task Force of the European Society of Paediatric Radiology (ESPR). MRI is recommended, at diagnosis and follow-up, for the evaluation of the primary tumour and its relationship to surrounding tissues, including assessment of neurovascular structures and loco-regional lymphadenopathy. Chest CT along with [F-18]2-fluoro-2-deoxyglucose (FDG) positron emission tomography (PET)/CT or PET/MRI are recommended for the detection and evaluation of loco-regional and distant metastatic disease. Guidance on the estimation of treatment response, optimal long-term follow-up, technical imaging settings and standardised reporting are described. This European imaging guideline outlines the recommendations for imaging in children and adolescents with rhabdomyosarcoma, with the aim to harmonise imaging and to advance patient care.
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12
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Zadig P, von Brandis E, Lein RK, Rosendahl K, Avenarius D, Ording Müller LS. Whole-body magnetic resonance imaging in children - how and why? A systematic review. Pediatr Radiol 2021; 51:14-24. [PMID: 32588094 PMCID: PMC7796873 DOI: 10.1007/s00247-020-04735-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 04/03/2020] [Accepted: 05/20/2020] [Indexed: 12/16/2022]
Abstract
Whole-body magnetic resonance imaging (MRI) is increasingly being used for a number of indications. Our aim was to review and describe indications and scan protocols for diagnostic value of whole-body MRI for multifocal disease in children and adolescents, we conducted a systematic search in Medline, Embase and Cochrane for all published papers until November 2018. Relevant subject headings and free text words were used for the following concepts: 1) whole-body, 2) magnetic resonance imaging and 3) child and/or adolescent. Included were papers in English with a relevant study design that reported on the use and/or findings from whole-body MRI examinations in children and adolescents. This review includes 54 of 1,609 papers identified from literature searches. Chronic nonbacterial osteomyelitis, lymphoma and metastasis were the most frequent indications for performing a whole-body MRI. The typical protocol included a coronal STIR (short tau inversion recovery) sequence with or without a coronal T1-weighted sequence. Numerous studies lacked sufficient data for calculating images resolution and only a few studies reported the acquired voxel volume, making it impossible for others to reproduce the protocol/images. Only a minority of the included papers assessed reliability tests and none of the studies documented whether the use of whole-body MRI affected mortality and/or morbidity. Our systematic review confirms significant variability of technique and the lack of proven validity of MRI findings. The information could potentially be used to boost attempts towards standardization of technique, reporting and guidelines development.
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Affiliation(s)
- Pia Zadig
- Department of Radiology, University Hospital of North Norway, Sykehusvegen 38, 9019, Tromsø, Norway.
- University of Tromsø - The Arctic University of Norway, Tromso, Norway.
| | | | | | - Karen Rosendahl
- Department of Radiology, University Hospital of North Norway, Sykehusvegen 38, 9019, Tromsø, Norway
- University of Tromsø - The Arctic University of Norway, Tromso, Norway
| | - Derk Avenarius
- Department of Radiology, University Hospital of North Norway, Sykehusvegen 38, 9019, Tromsø, Norway
- University of Tromsø - The Arctic University of Norway, Tromso, Norway
| | - Lil-Sofie Ording Müller
- Department of Radiology and Intervention, Unit for Paediatric Radiology, Oslo University Hospital, Oslo, Norway
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13
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Scheer M, Vokuhl C, Veit-Friedrich I, Münter M, von Kalle T, Greulich M, Loff S, Stegmaier S, Sparber-Sauer M, Niggli F, Ladenstein R, Kazanowska B, Ljungman G, Jahnukainen K, Fuchs J, Bielack SS, Koscielniak E, Klingebiel T. Low-grade fibromyxoid sarcoma: A report of the Cooperative Weichteilsarkom Studiengruppe (CWS). Pediatr Blood Cancer 2020; 67:e28009. [PMID: 31736251 DOI: 10.1002/pbc.28009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 08/08/2019] [Accepted: 08/10/2019] [Indexed: 11/05/2022]
Abstract
BACKGROUND Low-grade fibromyxoid sarcoma (LGFMS) is a rare soft-tissue tumor with benign histologic appearance, though fully malignant behavior is possible. METHODS Patients with LGFMS <21 years registered in Cooperative Weichteilsarkom Studiengruppe trials until 2017 were analyzed. Firstline treatment consisted of complete surgical resection whenever possible. RESULTS Median age of 31 patients was 10.9 years (first month to 17.1 years). Twenty-six tumors were confirmed to the tissue of origin (T1), four invaded contiguous structures (T2), one was TX. Eight were >5 cm. The best surgical result was resection with free margins (R0) in 24 and microscopic residuals (R1) in seven. Five-year event-free (EFS), 5-year local-relapse-free (LRFS), and 5-year overall-survival were 71 ± 18.6% confidence interval (CI) 95%, 76 ± 17.6% CI 95%, and 100%, respectively. Six patients suffered local relapse in a median of 1 year, one combined within 1.3 year and one metastatic relapse with lesions in the lung, back muscles, and thigh discovered in whole-body imaging 6 years after the first diagnosis. In univariate analysis, T status correlated with EFS (T1 79.6 ± 18.6%, T2 50.0 ± 49.0%, P = .038). Resection with free margins tends to be associated with better LRFS (R0 82.4 ± 18.6%, R1 53.6 ± 39.4%, P = .053). Among 24 patients with R0 resection, five (21%) suffered relapse, thereof three local, one metastatic, and one combined. Among seven patients with R1-resection, three (43%) suffered local relapse. CONCLUSION Special caution is advisable in T2 tumors. The metastatic potential with lesions in unusual sites indicates that affected patients need to be informed. If long-term follow-up with whole-body imaging is beneficial, it may be addressed in larger intergroup analyses. Further research in disease biology is essential for optimal treatment and follow-up care.
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Affiliation(s)
- Monika Scheer
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | - Christian Vokuhl
- Kiel Paediatric Tumor Registry, Department of Paediatric Pathology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - Iris Veit-Friedrich
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | - Marc Münter
- Department of Radiation Oncology, Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | - Thekla von Kalle
- Pediatric Radiology, Radiologisches Institut, Klinikum Stuttgart, Katharinenhospital, Stuttgart, Germany
| | - Michael Greulich
- Pediatric Surgery, Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | - Steffan Loff
- Pediatric Surgery, Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | - Sabine Stegmaier
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | - Monika Sparber-Sauer
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany
| | - Felix Niggli
- Department of Pediatric Oncology, University of Zurich, Zurich, Switzerland
| | - Ruth Ladenstein
- St. Anna Kinderspital and St. Anna Kinderkrebsforschung e.V., Vienna, Austria
| | | | - Gustaf Ljungman
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Kirsi Jahnukainen
- Department of Pediatrics, Helsinki University Central Hospital, Helsinki, Finland
| | - Jörg Fuchs
- Department of Pediatric Surgery and Urology, University Children's Hospital, Tuebingen, Germany
| | - Stefan S Bielack
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany.,Department of Pediatric Hematology and Oncology, University Children's Hospital Muenster, Munster, Germany
| | - Ewa Koscielniak
- Pediatrics 5 (Oncology, Hematology, Immunology), Klinikum Stuttgart, Olgahospital, Stuttgart, Germany.,Hospital for Children and Adolescents, Goethe-University Frankfurt (Main), Frankfurt, Germany
| | - Thomas Klingebiel
- Department of Pediatric Oncology, University of Tuebingen, Tuebingen, Germany
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14
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Schäfer JF, Granata C, von Kalle T, Kyncl M, Littooij AS, Di Paolo PL, Sefic Pasic I, Nievelstein RAJ. Whole-body magnetic resonance imaging in pediatric oncology - recommendations by the Oncology Task Force of the ESPR. Pediatr Radiol 2020; 50:1162-1174. [PMID: 32468287 PMCID: PMC7329776 DOI: 10.1007/s00247-020-04683-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/03/2020] [Accepted: 04/16/2020] [Indexed: 12/20/2022]
Abstract
The purpose of this recommendation of the Oncology Task Force of the European Society of Paediatric Radiology (ESPR) is to indicate reasonable applications of whole-body MRI in children with cancer and to address useful protocols to optimize workflow and diagnostic performance. Whole-body MRI as a radiation-free modality has been increasingly performed over the last two decades, and newer applications, as in screening of children with germ-line mutation cancer-related gene defects, are now widely accepted. We aim to provide a comprehensive outline of the diagnostic value for use in daily practice. Based on the results of our task force session in 2018 and the revision in 2019 during the ESPR meeting, we summarized our group's experiences in whole-body MRI. The lack of large evidence by clinical studies is challenging when focusing on a balanced view regarding the impact of whole-body MRI in pediatric oncology. Therefore, the final version of this recommendation was supported by the members of Oncology Task Force.
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Affiliation(s)
- Jürgen F Schäfer
- Division of Pediatric Radiology, Department of Radiology, University Hospital of Tübingen, Hoppe-Seyler-Straße 3, 72076, Tübingen, Germany.
| | - Claudio Granata
- Department of Paediatric Radiology, IRCCS materno infantile Burlo Garofolo, Trieste, Italy
| | - Thekla von Kalle
- Department of Pediatric Radiology, Olgahospital Klinikum Stuttgart, Stuttgart, Germany
| | - Martin Kyncl
- Department of Pediatric Radiology, Charles University and Motol University Hospital, Prague, Czech Republic
| | - Annemieke S Littooij
- Department of Radiology & Nuclear Medicine, Princess Maxima Center for Pediatric Oncology, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Irmina Sefic Pasic
- Radiology Clinic, Sarajevo School of Science and Technology, Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Rutger A J Nievelstein
- Department of Radiology & Nuclear Medicine, Princess Maxima Center for Pediatric Oncology, Wilhelmina Children's Hospital/University Medical Center Utrecht, Utrecht, The Netherlands
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15
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Chambers G, Frood R, Patel C, Scarsbrook A. 18F-FDG PET-CT in paediatric oncology: established and emerging applications. Br J Radiol 2019; 92:20180584. [PMID: 30383441 PMCID: PMC6404840 DOI: 10.1259/bjr.20180584] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/01/2018] [Accepted: 10/27/2018] [Indexed: 12/11/2022] Open
Abstract
Accurate staging and response assessment is vital in the management of childhood malignancies. Fluorine-18 fluorodeoxyglucose positron emission tomography/CT (FDG PET-CT) provides complimentary anatomical and functional information. Oncological applications of FDG PET-CT are not as well-established within the paediatric population compared to adults. This article will comprehensively review established oncological PET-CT applications in paediatric oncology and provide an overview of emerging and future developments in this domain.
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Affiliation(s)
- Greg Chambers
- Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Russell Frood
- Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Chirag Patel
- Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, UK
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16
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Scheer M, Vokuhl C, Blank B, Hallmen E, von Kalle T, Münter M, Wessalowski R, Hartwig M, Sparber-Sauer M, Schlegel PG, Kramm CM, Kontny U, Spriewald B, Kegel T, Bauer S, Kazanowska B, Niggli F, Ladenstein R, Ljungman G, Jahnukainen K, Fuchs J, Bielack SS, Klingebiel T, Koscielniak E. Desmoplastic small round cell tumors: Multimodality treatment and new risk factors. Cancer Med 2019; 8:527-542. [PMID: 30652419 PMCID: PMC6382921 DOI: 10.1002/cam4.1940] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 01/11/2023] Open
Abstract
Background To evaluate optimal therapy and potential risk factors. Methods Data of DSRCT patients <40 years treated in prospective CWS trials 1997‐2015 were analyzed. Results Median age of 60 patients was 14.5 years. Male:female ratio was 4:1. Tumors were abdominal/retroperitoneal in 56/60 (93%). 6/60 (10%) presented with a localized mass, 16/60 (27%) regionally disseminated nodes, and 38/60 (63%) with extraperitoneal metastases. At diagnosis, 23/60 (38%) patients had effusions, 4/60 (7%) a thrombosis, and 37/54 (69%) elevated CRP. 40/60 (67%) patients underwent tumor resection, 21/60 (35%) macroscopically complete. 37/60 (62%) received chemotherapy according to CEVAIE (ifosfamide, vincristine, actinomycin D, carboplatin, epirubicin, etoposide), 15/60 (25%) VAIA (ifosfamide, vincristine, adriamycin, actinomycin D) and, 5/60 (8%) P6 (cyclophosphamide, doxorubicin, vincristine, ifosfamide, etoposide). Nine received high‐dose chemotherapy, 6 received regional hyperthermia, and 20 received radiotherapy. Among 25 patients achieving complete remission, 18 (72%) received metronomic therapies. Three‐year event‐free (EFS) and overall survival (OS) were 11% (±8 confidence interval [CI] 95%) and 30% (±12 CI 95%), respectively, for all patients and 26.7% (±18.0 CI 95%) and 56.9% (±20.4 CI 95%) for 25 patients achieving remission. Extra‐abdominal site, localized disease, no effusion or ascites only, absence of thrombosis, normal CRP, complete tumor resection, and chemotherapy with VAIA correlated with EFS in univariate analysis. In multivariate analysis, significant factors were no thrombosis and chemotherapy with VAIA. In patients achieving complete remission, metronomic therapy with cyclophosphamide/vinblastine correlated with prolonged time to relapse. Conclusion Pleural effusions, venous thrombosis, and CRP elevation were identified as potential risk factors. The VAIA scheme showed best outcome. Maintenance therapy should be investigated further.
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Affiliation(s)
- Monika Scheer
- Pediatrics 5, Olgahospital, Klinikum Stuttgart, Stuttgart, Germany
| | - Christian Vokuhl
- Kiel Peadiatric Tumour Registry, Department of Pediatric Pathology, University Hospital Kiel, Germany
| | - Bernd Blank
- Pediatrics 5, Olgahospital, Klinikum Stuttgart, Stuttgart, Germany
| | - Erika Hallmen
- Pediatrics 5, Olgahospital, Klinikum Stuttgart, Stuttgart, Germany
| | - Thekla von Kalle
- Radiologisches Institut, Olgahospital, Klinikum Stuttgart, Stuttgart, Germany
| | - Marc Münter
- Radiation Oncology, Klinikum Stuttgart, Stuttgart, Germany
| | - Rüdiger Wessalowski
- Pediatric Oncology Clinic, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Maite Hartwig
- Pediatric Hematology and Oncology, University Hamburg-Eppendorf, Hamburg, Germany
| | | | | | - Christof M Kramm
- Pediatric Hematology and Oncology, University Medical Center Göttingen, Göttingen, Germany
| | - Udo Kontny
- Pediatric Hematology and Oncology, University Medical Center Aachen, Aachen, Germany
| | - Bernd Spriewald
- Internal Medicine 5, University Hospital Erlangen, Erlangen, Germany
| | - Thomas Kegel
- Hematology/Oncology, University of Halle, Halle, Germany
| | - Sebastian Bauer
- Sarcoma Center, West German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Bernarda Kazanowska
- Department of Pediatric Hematology/Oncology and BMT, University of Wroclaw, Wroclaw, Poland
| | - Felix Niggli
- Pediatric Oncology, University of Zürich, Zürich, Switzerland
| | - Ruth Ladenstein
- St. Anna Kinderspital and St. Anna Kinderkrebsforschung e.V., Vienna, Austria
| | - Gustaf Ljungman
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | | | - Jörg Fuchs
- Pediatric Surgery, University Hospital Tübingen, Tübingen, Germany
| | - Stefan S Bielack
- Pediatrics 5, Olgahospital, Klinikum Stuttgart, Stuttgart, Germany.,Pediatric Hematology and Oncology, University Children's Hospital Münster, Münster, Germany
| | - Thomas Klingebiel
- Department for Children and Adolescents, University Hospital, Goethe-University Frankfurt (Main), Frankfurt, Germany
| | - Ewa Koscielniak
- Pediatrics 5, Olgahospital, Klinikum Stuttgart, Stuttgart, Germany.,Pediatric Hematology and Oncology, University of Tübingen, Tübingen, Germany
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17
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Scheer M, Greulich M, Loff S, Vokuhl C, Feuchtgruber S, Kalle T, Münter M, Stegmaier S, Sparber‐Sauer M, Kazanowska B, Niggli F, Fuchs J, Bielack SS, Klingebiel T, Koscielniak E. Localized synovial sarcoma of the foot or ankle: A series of 32 Cooperative Weichteilsarkom Study Group patients. J Surg Oncol 2018; 119:109-119. [DOI: 10.1002/jso.25284] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 10/10/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Monika Scheer
- Pediatrics 5 (Oncology, Hematology, Immunology), Olgahospital, Klinikum StuttgartStuttgart Germany
| | - Michael Greulich
- Pediatric Surgery, Olgahospital, Klinikum StuttgartStuttgart Germany
| | - Steffan Loff
- Pediatric Surgery, Olgahospital, Klinikum StuttgartStuttgart Germany
| | - Christian Vokuhl
- Department of Pediatric Pathology, Kiel Paediatric Tumor Registry, University Hospital of Schleswig‐HolsteinCampus Kiel Germany
| | - Simone Feuchtgruber
- Pediatrics 5 (Oncology, Hematology, Immunology), Olgahospital, Klinikum StuttgartStuttgart Germany
| | - Thekla Kalle
- Pediatric Radiology, Radiologisches Institut, Olgahospital, Klinikum StuttgartStuttgart Germany
| | - Marc Münter
- Department of Radiation OncologyKlinikum StuttgartStuttgart Germany
| | - Sabine Stegmaier
- Pediatrics 5 (Oncology, Hematology, Immunology), Olgahospital, Klinikum StuttgartStuttgart Germany
| | - Monika Sparber‐Sauer
- Pediatrics 5 (Oncology, Hematology, Immunology), Olgahospital, Klinikum StuttgartStuttgart Germany
| | | | - Felix Niggli
- Department of Pediatric OncologyUniversity of ZuerichZuerich Switzerland
| | - Jörg Fuchs
- Department of Pediatric Surgery and UrologyUniversity Children’s HospitalTuebingen Germany
| | - Stefan S. Bielack
- Pediatrics 5 (Oncology, Hematology, Immunology), Olgahospital, Klinikum StuttgartStuttgart Germany
- Department of Pediatric Hematology and OncologyUniversity Children’s HospitalMuenster Germany
| | - Thomas Klingebiel
- Hospital for Children and Adolescents, Goethe‐University Frankfurt (Main)Frankfurt Germany
| | - Ewa Koscielniak
- Pediatrics 5 (Oncology, Hematology, Immunology), Olgahospital, Klinikum StuttgartStuttgart Germany
- Department of Pediatric OncologyUniversity of TuebingenTuebingen Germany
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