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Expósito D, Martel J, Alvarez de Sierra B, Bueno A, Vilanova C, Vilanova JC. Neoplastic and Non-neoplastic Bone Lesions of the Knee. Semin Musculoskelet Radiol 2024; 28:225-247. [PMID: 38768589 DOI: 10.1055/s-0044-1781471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Numerous anatomical variants are described around the knee, many of which look like bony lesions, so it is important to know them to avoid unnecessary complementary tests and inadequate management. Likewise, several alterations in relation to normal development can also simulate bone lesions.However, numerous pathologic processes frequently affect the knee, including traumatic, inflammatory, infectious, and tumor pathology. Many of these entities show typical radiologic features that facilitate their diagnosis. In other cases, a correct differential diagnosis is necessary for proper clinical management.Despite the availability of increasingly advanced imaging techniques, plain radiography is still the technique of choice in the initial study of many of these pathologies. This article reviews the radiologic characteristics of tumor and nontumor lesions that may appear around the knee to make a correct diagnosis and avoid unnecessary complementary radiologic examinations and inadequate clinical management.
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Affiliation(s)
- Diana Expósito
- Department of Radiology, Hospital Sanitas La Moraleja, Madrid, Spain
| | - José Martel
- Department of Radiology, Hospital Universitario Fundación Alcorcón, Madrid, Spain
| | | | - Angel Bueno
- Department of Radiology, Hospital Universitario Fundación Alcorcón, Madrid, Spain
| | - Cristina Vilanova
- Department of Orthopaedic Surgery, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain
| | - Joan C Vilanova
- Department of Radiology, Clínica Girona, Institute of Diagnostic Imaging (IDI) Girona, University of Girona, Girona, Spain
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Jeys LM, Thorkildsen J, Kurisunkal V, Puri A, Ruggieri P, Houdek MT, Boyle RA, Ebeid W, Botello E, Morris GV, Laitinen MK, Abudu A, Ae K, Agarwal M, Ajit Singh V, Akiyama T, Albergo JI, Alexander J, Alpan B, Aoude A, Asavamongkolkul A, Aston W, Baad-Hansen T, Balach T, Benevenia J, Bergh P, Bernthal N, Binitie O, Boffano M, Bramer J, Branford White H, Brennan B, Cabrolier J, Calvo Haro JA, Campanacci DA, Cardoso R, Carey Smith R, Casales Fresnga N, Casanova JM, Ceballos O, Chan CM, Chung YG, Clara-Altamirano MA, Cribb G, Dadia S, Dammerer D, de Vaal M, Delgado Obando J, Deo S, Di Bella C, Donati DM, Endo M, Eralp L, Erol B, Evans S, Eward W, Fiorenza F, Freitas J, Funovics PT, Galli Serra M, Ghert M, Ghosh K, Gomez Mier LC, Gomez Vallejo J, Griffin A, Gulia A, Guzman M, Hardes J, Healey J, Hernandez A, Hesla A, Hongsaprabhas C, Hornicek F, Hosking K, Iwata S, Jagiello J, Johnson L, Johnston A, Joo MW, Jutte P, Kapanci B, Khan Z, Kobayashi H, Kollender Y, Koob S, Kotrych D, Le Nail LR, Legosz P, Lehner B, Leithner A, Lewis V, Lin P, Linares F, Lozano Calderon S, Mahendra A, Mahyudin F, Mascard E, Mattei JC, McCullough L, Medellin Rincon MR, Morgan-Jones R, Moriel Garcesco DJ, Mottard S, Nakayama R, Narhari P, O'Toole G, Vania O, Olivier A, Omar M, Ortiz-Cruz E, Ozger H, Ozkan K, Palmerini E, Papagelopoulos P, Parry M, Patton S, Petersen MM, Powell G, Puhaindran M, Raja A, Rajasekaran RB, Repsa L, Ropars M, Sambri A, Schubert T, Shehadeh A, Siegel G, Sommerville S, Spiguel A, Stevenson J, Sys G, Temple T, Traub F, Tsuchiya H, Valencia J, Van de Sande M, Vaz G, Velez Villa R, Vyrva O, Wafa H, Wan Faisham Numan WI, Wang E, Warnock D, Werier J, Wong KC, Norio Y, Zhaoming Y, Zainul Abidin S, Zamora T, Zumarraga JP, Abou-Nouar G, Gebert C, Randall RL. Controversies in orthopaedic oncology. Bone Joint J 2024; 106-B:425-429. [PMID: 38689572 DOI: 10.1302/0301-620x.106b5.bjj-2023-1381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Chondrosarcoma is the second most common surgically treated primary bone sarcoma. Despite a large number of scientific papers in the literature, there is still significant controversy about diagnostics, treatment of the primary tumour, subtypes, and complications. Therefore, consensus on its day-to-day treatment decisions is needed. In January 2024, the Birmingham Orthopaedic Oncology Meeting (BOOM) attempted to gain global consensus from 300 delegates from over 50 countries. The meeting focused on these critical areas and aimed to generate consensus statements based on evidence amalgamation and expert opinion from diverse geographical regions. In parallel, periprosthetic joint infection (PJI) in oncological reconstructions poses unique challenges due to factors such as adjuvant treatments, large exposures, and the complexity of surgery. The meeting debated two-stage revisions, antibiotic prophylaxis, managing acute PJI in patients undergoing chemotherapy, and defining the best strategies for wound management and allograft reconstruction. The objectives of the meeting extended beyond resolving immediate controversies. It sought to foster global collaboration among specialists attending the meeting, and to encourage future research projects to address unsolved dilemmas. By highlighting areas of disagreement and promoting collaborative research endeavours, this initiative aims to enhance treatment standards and potentially improve outcomes for patients globally. This paper sets out some of the controversies and questions that were debated in the meeting.
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Affiliation(s)
- Lee M Jeys
- Royal Orthopaedic Hospital, Birmingham, UK
| | | | | | - Ajay Puri
- Homi Bhabha National Institute, Tata Memorial Hospital, Mumbai, India
| | - Pietro Ruggieri
- Department of Orthopedics and Orthopedic Oncology, University of Padova, Padova, Italy
| | - Matthew T Houdek
- Department of Orthopaedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Walid Ebeid
- Orthopedic Surgery Department, Cairo University, Cairo, Egypt
| | | | | | - Minna K Laitinen
- Department of Orthopaedics and Traumatology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | | | - Keisuke Ae
- Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | | | | | - Toru Akiyama
- Saitama Medical Center, JIchi Medical University, Saitama, Japan
| | - Jose I Albergo
- Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | | | | | | | | | | | | | | | - Peter Bergh
- Sahlgren University Hospital, Gothenburg, Sweden
| | - Nicholas Bernthal
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | | | - Michele Boffano
- Orthopaedic Oncology Unit, AOU Citta' della Salute e della Scienza, Torino, Italy
| | - Jos Bramer
- Amsterdam University Medical Centre, Amsterdam, Netherlands
| | | | | | | | | | | | - Rodrigo Cardoso
- Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, Brazil
| | | | - Nicolas Casales Fresnga
- National Orthopaedic and Trauma Institute Republic University Montevideo Montevideo, Montevideo, Uruguay
| | - Jose M Casanova
- Centro Hospitalar Universitário de Coimbra, EP, Coimbra, Portugal
| | | | - Chung M Chan
- National University Hospital, Singapore, Singapore
| | - Yang-Guk Chung
- Seoul St. Mary's Hospital/The Catholic University of Korea, Seoul, South Korea
| | | | | | | | | | | | | | | | | | | | | | - Levent Eralp
- Complex Extremity Reconstruction Unit, Acibadem Hospital Group, Istanbul, Turkey
| | - Bulent Erol
- Marmara University Orthopedics and Traumatology, Istanbul, Turkey
| | | | - Will Eward
- Duke University, Durham, North Carolina, USA
| | | | - Joao Freitas
- Centro Hospitalar Universitário de Coimbra, EP, Coimbra, Portugal
| | | | - Marcos Galli Serra
- Hospital Universitario Austral / Orthopedic Oncology Unit Buenos, Aires, Argentina
| | | | | | | | | | | | - Ashish Gulia
- Homi Bhabha Cancer Hospital & Research Centre, Vishakhapatnam, India
| | | | | | - John Healey
- Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | | | - Asle Hesla
- Karolinska University Hospital, Stockholm, Sweden
| | | | | | - Keith Hosking
- Life Orthopaedic Hospital / Groote Schuur, Cape Town, South Africa
| | | | | | - Luke Johnson
- South Australian Bone & Soft Tissue Tumour Unit, Flinders Medical Centre, Adelaine, Australia
| | | | - Min Wook Joo
- Department of Orthopaedic Surgery, St Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Paul Jutte
- University Medical Center Groningen, Groningen, Netherlands
| | | | - Zeeshan Khan
- Rehman Medical Institute and Medical College, Peshawar, Pakistan
| | | | | | | | - Daniel Kotrych
- Pomeranian Medical University of Szczecin, Szczecin, Poland
| | | | | | - Burkhard Lehner
- Orthopedic University Hospital Heidelberg, Heidelberg, Germany
| | | | | | - Peng Lin
- The Second Affiliated Hospital Zhejiang University School of Medicine, Zhejiang, China
| | | | | | | | | | | | | | | | | | | | | | - Sophie Mottard
- Maisonneuve Rosemont Hospital, Université de Montréal, Montreal, Canada
| | | | | | - Gary O'Toole
- St. Vincent's University Hospital Dublin, Dublin, Ireland
| | - Oliveira Vania
- Centro Hospitalar Universitário de Santo António, Porto, Portugal
| | | | | | | | - Harzem Ozger
- Istanbul University Medical Faculty, Istanbul, Turkey
| | | | | | | | | | - Sam Patton
- Edinburgh Royal Infirmary, Edinburgh, UK
| | - Michael M Petersen
- Rigshospitalet/University of Copenhagen/Department of Orthopedics, Copenhagen, Denmark
| | | | | | | | | | | | | | - Andrea Sambri
- IRCCS Azienda Ospedaliera Universitaria di Bologna, Bologna, Italy
| | | | - Ahmad Shehadeh
- Orthopaedic Unit, King Hussein Cancer Center, Amman, Jordan
| | - Geoffrey Siegel
- Michigan Medicine / University of Michigan, Ann Arbor, Michigan, USA
| | | | | | | | - Gwen Sys
- Ghent University Hospital, Ghent, Belgium
| | | | - Frank Traub
- University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | | | | | | | | | | | - Oleg Vyrva
- Sytenko Institute of Spine and Joint Pathology, Kharkiv, Ukraine
| | - Hazem Wafa
- Leuven University Hospitals, Leuven, Belgium
| | | | - Edward Wang
- University of the Philippines Musculoskeletal Tumor Unit, Manila, Phillipines
| | | | | | - Kwok-Chuen Wong
- Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | | | - Ye Zhaoming
- The Second Affiliated Hospital Zhejiang University School of Medicine, Zhejiang, China
| | | | - Tomas Zamora
- Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan P Zumarraga
- Hospital Metropolitano / Departamento de Ortopedia y Traumatología, Quito, Ecuador
| | | | | | - R L Randall
- University of California, Sacramento, California, USA
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Van Den Berghe T, Delbare F, Candries E, Lejoly M, Algoet C, Chen M, Laloo F, Huysse WCJ, Creytens D, Verstraete KL. A retrospective external validation study of the Birmingham Atypical Cartilage Tumour Imaging Protocol (BACTIP) for the management of solitary central cartilage tumours of the proximal humerus and around the knee. Eur Radiol 2024:10.1007/s00330-024-10604-y. [PMID: 38319428 DOI: 10.1007/s00330-024-10604-y] [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: 09/01/2023] [Revised: 12/01/2023] [Accepted: 12/20/2023] [Indexed: 02/07/2024]
Abstract
OBJECTIVES This study aimed to externally validate the Birmingham Atypical Cartilage Tumour Imaging Protocol (BACTIP) recommendations for differentiation/follow-up of central cartilage tumours (CCTs) of the proximal humerus, distal femur, and proximal tibia and to propose BACTIP adaptations if the results provide new insights. METHODS MRIs of 123 patients (45 ± 11 years, 37 men) with an untreated CCT with MRI follow-up (n = 62) or histopathological confirmation (n = 61) were retrospectively/consecutively included and categorised following the BACTIP (2003-2020 / Ghent University Hospital/Belgium). Tumour length and endosteal scalloping differences between enchondroma, atypical cartilaginous tumour (ACT), and high-grade chondrosarcoma (CS II/III/dedifferentiated) were evaluated. ROC-curve analysis for differentiating benign from malignant CCTs and for evaluating the BACTIP was performed. RESULTS For lesion length and endosteal scalloping, ROC-AUCs were poor and fair-excellent, respectively, for differentiating different CCT groups (0.59-0.69 versus 0.73-0.91). The diagnostic performance of endosteal scalloping and the BACTIP was higher than that of lesion length. A 1° endosteal scalloping cut-off differentiated enchondroma from ACT + high-grade chondrosarcoma with a sensitivity of 90%, reducing the potential diagnostic delay. However, the specificity was 29%, inducing overmedicalisation (excessive follow-up). ROC-AUC of the BACTIP was poor for differentiating enchondroma from ACT (ROC-AUC = 0.69; 95%CI = 0.51-0.87; p = 0.041) and fair-good for differentiation between other CCT groups (ROC-AUC = 0.72-0.81). BACTIP recommendations were incorrect/unsafe in five ACTs and one CSII, potentially inducing diagnostic delay. Eleven enchondromas received unnecessary referrals/follow-up. CONCLUSION Although promising as a useful tool for management/follow-up of CCTs of the proximal humerus, distal femur, and proximal tibia, five ACTs and one chondrosarcoma grade II were discharged, potentially inducing diagnostic delay, which could be reduced by adapting BACTIP cut-off values. CLINICAL RELEVANCE STATEMENT Mostly, Birmingham Atypical Cartilage Tumour Imaging Protocol (BACTIP) assesses central cartilage tumours of the proximal humerus and the knee correctly. Both when using the BACTIP and when adapting cut-offs, caution should be taken for the trade-off between underdiagnosis/potential diagnostic delay in chondrosarcomas and overmedicalisation in enchondromas. KEY POINTS • This retrospective external validation confirms the Birmingham Atypical Cartilage Tumour Imaging Protocol as a useful tool for initial assessment and follow-up recommendation of central cartilage tumours in the proximal humerus and around the knee in the majority of cases. • Using only the Birmingham Atypical Cartilage Tumour Imaging Protocol, both atypical cartilaginous tumours and high-grade chondrosarcomas (grade II, grade III, and dedifferentiated chondrosarcomas) can be misdiagnosed, excluding them from specialist referral and further follow-up, thus creating a potential risk of delayed diagnosis and worse prognosis. • Adapted cut-offs to maximise detection of atypical cartilaginous tumours and high-grade chondrosarcomas, minimise underdiagnosis and reduce potential diagnostic delay in malignant tumours but increase unnecessary referral and follow-up of benign tumours.
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Affiliation(s)
- Thomas Van Den Berghe
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium.
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium.
| | - Felix Delbare
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium
| | - Esther Candries
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium
| | - Maryse Lejoly
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium
| | - Chloé Algoet
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium
| | - Min Chen
- Department of Radiology, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Frederiek Laloo
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium
| | - Wouter C J Huysse
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium
| | - David Creytens
- Department of Pathology, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Koenraad L Verstraete
- Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Sint-Pietersnieuwstraat 25, 9000, Ghent, Belgium
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Scholte CHJ, Dorleijn DMJ, Krijvenaar DT, van de Sande MAJ, van Langevelde K. Wait-and-scan: an alternative for curettage in atypical cartilaginous tumours of the long bones. Bone Joint J 2024; 106-B:86-92. [PMID: 38160684 DOI: 10.1302/0301-620x.106b1.bjj-2023-0467.r1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Aims Due to its indolent clinical behaviour, the treatment paradigm of atypical cartilaginous tumours (ACTs) in the long bones is slowly shifting from intralesional resection (curettage) and local adjuvants, towards active surveillance through wait-and-scan follow-up. In this retrospective cohort study performed in a tertiary referral centre, we studied the natural behaviour of ACT lesions by active surveillance with MRI. Clinical symptoms were not considered in the surveillance programme. Methods The aim of this study was to see whether active surveillance is safe regarding malignant degeneration and local progression. In total, 117 patients were evaluated with MRI assessing growth, cortical destruction, endosteal scalloping, periosteal reaction, relation to the cortex, and perilesional bone marrow oedema. Patients received up to six follow-up scans. Results At the time of the first follow-up MRI, 8% of the lesions showed growth (n = 9), 86% remained stable (101), and 6% decreased in size (n = 7). During the third follow-up, with a mean follow-up time of 60 months (SD 23), 24 patients were scanned, of whom 13% had lesions that had grown and 13% lesions that had decreased in size. After 96 months (SD 37), at the sixth follow-up MRI, 100% of the lesions remained stable. None of the lesions showed malignant progression and although some lesions grew in size (mean 1 mm (SD 0.8)), no malignant progression occurred. Conclusion We conclude that active surveillance with MRI is safe for ACTs in the long bones in the short- and mid-term follow-up.
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Affiliation(s)
- Claire H J Scholte
- Department of Orthopedics, Leiden University Medical Center, Leiden, Netherlands
| | | | - Duco T Krijvenaar
- Department of Orthopedics, Leiden University Medical Center, Leiden, Netherlands
| | | | - K van Langevelde
- Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
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Ariyaratne S, Iyengar KP, Nischal N, Chitti Babu N, Botchu R. A comparison of ChatGPT-generated articles with human-written articles. Skeletal Radiol 2023; 52:1755-1758. [PMID: 37059827 DOI: 10.1007/s00256-023-04340-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/06/2023] [Accepted: 04/09/2023] [Indexed: 04/16/2023]
Abstract
OBJECTIVE ChatGPT (Generative Pre-trained Transformer) is an artificial intelligence language tool developed by OpenAI that utilises machine learning algorithms to generate text that closely mimics human language. It has recently taken the internet by storm. There have been several concerns regarding the accuracy of documents it generates. This study compares the accuracy and quality of several ChatGPT-generated academic articles with those written by human authors. MATERIAL AND METHODS We performed a study to assess the accuracy of ChatGPT-generated radiology articles by comparing them with the published or written, and under review articles. These were independently analysed by two fellowship-trained musculoskeletal radiologists and graded from 1 to 5 (1 being bad and inaccurate to 5 being excellent and accurate). RESULTS In total, 4 of the 5 articles written by ChatGPT were significantly inaccurate with fictitious references. One of the papers was well written, with a good introduction and discussion; however, all references were fictitious. CONCLUSION ChatGPT is able to generate coherent research articles, which on initial review may closely resemble authentic articles published by academic researchers. However, all of the articles we assessed were factually inaccurate and had fictitious references. It is worth noting, however, that the articles generated may appear authentic to an untrained reader.
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Affiliation(s)
- Sisith Ariyaratne
- Department of Musculoskeletal Radiology, The Royal Orthopedic Hospital, Bristol Road South, Northfield, Birmingham, UK
| | | | - Neha Nischal
- Department of Radiology, Holy Family Hospital, New Delhi, India
| | - Naparla Chitti Babu
- Department of Radiology, Srinivas Institute of Medical Sciences & Research Centre, Mukka, Mangalore, India
| | - Rajesh Botchu
- Department of Musculoskeletal Radiology, The Royal Orthopedic Hospital, Bristol Road South, Northfield, Birmingham, UK.
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Gondim Teixeira PA, Lemore A, Vogt N, Oster J, Hossu G, Gillet R, Blum A. Initial Evaluation of Focal Bone Lesions: How Do We Do It? Semin Musculoskelet Radiol 2023; 27:471-479. [PMID: 37748471 DOI: 10.1055/s-0043-1769775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Focal bone lesions are frequent, and management greatly depends on the characteristics of their images. After briefly discussing the required work-up, we analyze the most relevant imaging signs for assessing potential aggressiveness. We also describe the imaging aspects of the various types of lesion matrices and their clinical implications.
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Affiliation(s)
- Pedro Augusto Gondim Teixeira
- Guilloz Imaging Department, University Hospital Center of Nancy, Central Hospital, Nancy Cedex, France
- Université de Lorraine, INSERM, Laboratoire d'Imagerie Diagnostic et Interventionnelle - IADI, Nancy, France
| | - Astrée Lemore
- Guilloz Imaging Department, University Hospital Center of Nancy, Central Hospital, Nancy Cedex, France
- Université de Lorraine, INSERM, Laboratoire d'Imagerie Diagnostic et Interventionnelle - IADI, Nancy, France
| | - Nora Vogt
- Université de Lorraine, INSERM, Laboratoire d'Imagerie Diagnostic et Interventionnelle - IADI, Nancy, France
| | - Julien Oster
- Université de Lorraine, INSERM, Laboratoire d'Imagerie Diagnostic et Interventionnelle - IADI, Nancy, France
| | - Gabriela Hossu
- Université de Lorraine, INSERM, Laboratoire d'Imagerie Diagnostic et Interventionnelle - IADI, Nancy, France
| | - Romain Gillet
- Guilloz Imaging Department, University Hospital Center of Nancy, Central Hospital, Nancy Cedex, France
- Université de Lorraine, INSERM, Laboratoire d'Imagerie Diagnostic et Interventionnelle - IADI, Nancy, France
| | - Alain Blum
- Guilloz Imaging Department, University Hospital Center of Nancy, Central Hospital, Nancy Cedex, France
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Kim JH, Lee SK. Classification of Chondrosarcoma: From Characteristic to Challenging Imaging Findings. Cancers (Basel) 2023; 15:cancers15061703. [PMID: 36980590 PMCID: PMC10046282 DOI: 10.3390/cancers15061703] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/08/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Chondrosarcomas can be classified into various forms according to the presence or absence of a precursor lesion, location, and histological subtype. The new 2020 World Health Organization (WHO) Classification of Tumors of Soft Tissue and Bone classifies chondrogenic bone tumors as benign, intermediate (locally aggressive), or malignant, and separates atypical cartilaginous tumors (ACTs) and chondrosarcoma grade 1 (CS1) as intermediate and malignant tumors. respectively. Furthermore, the classification categorizes chondrosarcomas (including ACT) into eight subtypes: central conventional (grade 1 vs. 2–3), secondary peripheral (grade 1 vs. 2–3), periosteal, dedifferentiated, mesenchymal, and clear cell chondrosarcoma. Most chondrosarcomas are the low-grade, primary central conventional type. The rarer subtypes include clear cell, mesenchymal, and dedifferentiated chondrosarcomas. Comprehensive analysis of the characteristic imaging findings can help differentiate various forms of chondrosarcomas. However, distinguishing low-grade chondrosarcomas from enchondromas or high-grade chondrosarcomas is radiologically and histopathologically challenging, even for experienced radiologists and pathologists.
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Affiliation(s)
- Jun-Ho Kim
- Department of Orthopaedic Surgery, Center for Joint Diseases, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea
| | - Seul Ki Lee
- Department of Radiology, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Correspondence:
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Pattamapaspong N, Peh WCG. Benign incidental do-not-touch bone lesions. Br J Radiol 2023; 96:20211334. [PMID: 35604667 PMCID: PMC9975527 DOI: 10.1259/bjr.20211334] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 05/07/2022] [Accepted: 05/11/2022] [Indexed: 01/27/2023] Open
Abstract
Benign bone lesions may occasionally be incidentally detected on radiographs and are also increasingly found on CT or MRI performed for other clinical indications. Although mostly asymptomatic or associated with minor symptoms, these lesions may simulate true pathological lesions, causing problems in diagnosis. For instance, asymptomatic benign bone lesions can be misinterpreted as metastasis when incidentally encountered in a patient with known cancer. Recognising these entities as "do-not-touch" lesions helps avoid unnecessary further investigation or harmful intervention. In this review, we highlight three groups of bone incidentalomas found in adults, namely: osteolytic lesions, osteoblastic lesions, and bone protuberances. We aim to review the key imaging features of selected common and less common conditions in these three groups, so as to help radiologists confidently identify these benign do-not-touch lesions and to distinguish them from more sinister pathological lesions.
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Affiliation(s)
- Nuttaya Pattamapaspong
- Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Wilfred CG Peh
- Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Yishun Central, Singapore
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Zhong J, Hu Y, Ge X, Xing Y, Ding D, Zhang G, Zhang H, Yang Q, Yao W. A systematic review of radiomics in chondrosarcoma: assessment of study quality and clinical value needs handy tools. Eur Radiol 2023; 33:1433-1444. [PMID: 36018355 DOI: 10.1007/s00330-022-09060-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 06/24/2022] [Accepted: 07/24/2022] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To evaluate the study quality and clinical value of radiomics studies on chondrosarcoma. METHODS PubMed, Embase, Web of Science, China National Knowledge Infrastructure, and Wanfang Data were searched for articles on radiomics for evaluating chondrosarcoma as of January 31, 2022. The study quality was assessed according to Radiomics Quality Score (RQS), Transparent Reporting of a multivariable prediction model for Individual Prognosis Or Diagnosis (TRIPOD) checklist, Image Biomarker Standardization Initiative (IBSI) guideline, and modified Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) tool. The level of evidence supporting clinical use of radiomics on chondrosarcoma differential diagnosis was determined based on meta-analyses. RESULTS Twelve articles were included. The median RQS was 10.5 (range, -3 to 15), with an adherence rate of 36%. The adherence rate was extremely low in domains of high-level evidence (0%), open science and data (17%), and imaging and segmentation (35%). The adherence rate of the TRIPOD checklist was 61%, and low for section of title and abstract (13%), introduction (42%), and results (56%). The reporting rate of pre-processing steps according to the IBSI guideline was 60%. The risk of bias and concern of application were mainly related to the index test. The meta-analysis on differential diagnosis of enchondromas vs. chondrosarcomas showed a diagnostic odds ratio of 43.90 (95% confidential interval, 25.33-76.10), which was rated as weak evidence. CONCLUSIONS The current scientific and reporting quality of radiomics studies on chondrosarcoma was insufficient. Radiomics has potential in facilitating the optimization of operation decision-making in chondrosarcoma. KEY POINTS • Among radiomics studies on chondrosarcoma, although differential diagnostic models showed promising performance, only pieces of weak level of evidence were reached with insufficient study quality. • Since the RQS rating, the TRIPOD checklist, and the IBSI guideline have largely overlapped with each other, it is necessary to establish one widely acceptable methodological and reporting guideline for radiomics research. • The TRIPOD model typing, the phase classification of image mining studies, and the level of evidence category are useful tools to assess the gap between academic research and clinical application, although their modifications for radiomics studies are needed.
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Affiliation(s)
- Jingyu Zhong
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China
| | - Yangfan Hu
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China
| | - Xiang Ge
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China
| | - Yue Xing
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China
| | - Defang Ding
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China
| | - Guangcheng Zhang
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China
| | - Huan Zhang
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, No. 197 Ruijin 2nd Road, Shanghai, 200025, China
| | - Qingcheng Yang
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China.
| | - Weiwu Yao
- Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111 Xianxia Road, Shanghai, 200336, China.
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10
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Davies A, Patel A, Azzopardi C, James S, Botchu R, Jeys L. The influence of site on the incidence and diagnosis of solitary central cartilage tumours of the femur. A 21 st century perspective. J Clin Orthop Trauma 2022; 32:101953. [PMID: 35959501 PMCID: PMC9358228 DOI: 10.1016/j.jcot.2022.101953] [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: 03/30/2022] [Revised: 07/07/2022] [Accepted: 07/19/2022] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE To determine the incidence of central cartilage tumours (CCTs) in the femur and the impact of site (proximal, mid and distal thirds) on tumour grade. To compare study results with historically published data. MATERIALS AND METHODS Retrospective review of solitary CCTs arising in the femur over the past 13 years. Data collected included location (proximal, mid and distal thirds) and final diagnosis in terms of tumour grade based on imaging features ± histology. Case material collected from three bone tumour textbooks provided historical data. RESULTS 430 solitary CCTs were included in the femur. 73% cases arose in the distal, 3.7% in the mid and 23% in the proximal femur. The ratio of "benign" (combining enchondroma and atypical cartilaginous tumour (ACT)) to higher grade chondrosarcoma (CS) was 11:1 in the distal, 1:1 in the mid and 1:1.5 in the proximal femur, the distribution of benign to malignant tumours being significantly different between the regions (F test, p < 0.05). Comparison with historical data showed a reversal of the benign (enchondroma) to malignant (ACT and higher grade CS) of 30%:70%-84%:16% in the current series. CONCLUSIONS The site of origin of a CCT in the femur has an impact on final diagnosis with CS uncommon in the distal as compared with the mid and proximal femur. This is in contradistinction to historical data where the incidence of CS exceeded that of enchondroma at all sites.
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Affiliation(s)
- A.M. Davies
- Department of Musculoskeletal Imaging, Royal Orthopaedic Hospital, Birmingham, UK
| | - A. Patel
- Department of Musculoskeletal Imaging, Royal Orthopaedic Hospital, Birmingham, UK
| | - C. Azzopardi
- Department of Musculoskeletal Imaging, Royal Orthopaedic Hospital, Birmingham, UK
| | - S.L. James
- Department of Musculoskeletal Imaging, Royal Orthopaedic Hospital, Birmingham, UK
| | - R. Botchu
- Department of Musculoskeletal Imaging, Royal Orthopaedic Hospital, Birmingham, UK,Corresponding author. Department of Musculoskeletal Radiology, The Royal Orthopedic Hospital, Bristol Road South, Northfield, Birmingham, UK.
| | - L. Jeys
- Departments of Orthopaedic Oncology, Royal Orthopaedic Hospital, Birmingham, UK
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11
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Smolle MA, Lehner B, Omlor G, Igrec J, Brcic I, Bergovec M, Galsterer S, Gilg MM, Leithner A. Der atypische chondrogene Tumor. DIE ONKOLOGIE 2022; 28:595-601. [DOI: 10.1007/s00761-022-01099-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/14/2022] [Indexed: 09/21/2023]
Abstract
Zusammenfassung
Hintergrund
Atypische chondrogene Tumoren (ACT) der kurzen und langen Röhrenknochen, früher als Chondrosarkome G1 bezeichnet, verhalten sich lokal aggressiv, haben aber ein sehr geringes Metastasierungspotenzial. Die Abgrenzung zu benignen Enchondromen ist aus klinischer, radiologischer und histopathologischer Sicht komplex.
Ziel der Arbeit
Epidemiologie, Diagnostik und Therapie von ACT unter besonderer Berücksichtigung der Abgrenzung zu Enchondromen werden dargestellt.
Material und Methoden
Es erfolgt die Zusammenfassung der internationalen Fachliteratur zu ACT und Enchondromen.
Ergebnisse
Die Inzidenz von Enchondromen, und mehr noch von ACT, ist über die Jahre angestiegen, was auf häufiger werdende Diagnostik hinweist. Im Gegensatz zu Enchondromen können ACT mit Schmerzen verbunden sein und radiologische Zeichen aggressiven Wachstums, wie tiefes endosteales Scalloping, aufweisen. Die alleinige Biopsie zur Differenzierung zwischen Enchondromen und ACT ist oft nicht hilfreich, da aufgrund der punktuellen Probegewebsentnahme ein „sampling error“ resultieren kann. Die definitive operative Therapie von ACT der langen und kurzen Röhrenknochen hat sich über die letzten Jahre gewandelt, weg von einer radikalen Tumorentfernung hin zu intraläsionaler Kürettage. Ein Zuwarten ist bei radiologischem Verdacht auf das Vorliegen eines Enchondroms regelmäßigen Verlaufskontrollen mittels Magnetresonanztomographie (MRT) möglich.
Schlussfolgerungen
ACT weisen im Gegensatz zu Enchondromen radiologische Zeichen eines aggressiven Wachstums auf. Die heutzutage bevorzugte Therapie besteht aus einer intraläsionalen Kürettage. Sowohl Diagnostik als auch Therapie und Nachsorge von kartilaginären Tumoren sollten an einem spezialisierten Tumorzentrum erfolgen.
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12
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Abstract
Incidental bone lesions are encountered frequently in day-to-day practice. Many of these lesions are indeterminate requiring referral to specialist centres for further characterisation with or without biopsy; however, as biopsy has its own drawbacks, not all lesions can be subjected to biopsy. The primary role of a radiologist in these situations is to characterise these lesions based on their imaging appearances into aggressive lesions requiring biopsy and non-aggressive lesions that do not require a biopsy. The term "do-not-touch lesion" is used to describe a lesion with typical radiographic appearances that can be characterised based on radiographic appearances alone without needing a biopsy. With recent advances in imaging, many incidental lesions can be characterised into do-not-touch lesions based on their imaging appearances alone using a single imaging technique or using a combination of imaging techniques and, less frequently, with the additional help of serological investigations, without the need for biopsy. Hence, the definition of do-not-touch lesions of bone needs a revisit. In this article, we attempt to redefine do-not-touch lesions of bone and propose an imaging-based classification for characterisation of these lesions.
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13
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Davies AM, Patel A, Azzopardi C, James SL, Botchu R. Prevalence of Enchondromas of the Proximal Femur in Adults as an Incidental Finding on MRI of the Pelvis. Indian J Radiol Imaging 2021; 31:582-585. [PMID: 34790301 PMCID: PMC8590542 DOI: 10.1055/s-0041-1735915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Objective To determine the prevalence of enchondroma in adults as an incidental finding in the proximal femur on magnetic resonance imaging (MRI). Materials and Methods A retrospective review of the MRI scans of the pelvis in a series of adult patients was conducted. All presented with nononcological musculoskeletal complaints. The site, size, and appearances of the enchondromas were identified according to criteria from previous studies. Results A total of 1,209 proximal femora in 610 patients were reviewed and a total of 9 enchondromas were identified. These ranged from 0.6 to 2.5 cm in length (mean 1.3 cm). None showed aggressive features suggestive of malignancy. Three cases (33%) underwent follow-up MRI scans which showed no change in size or morphology. Conclusion The prevalence on MRI of incidental enchondromas arising in the proximal femur is 0.7%. This is three to four times less common than seen in the proximal humerus and around the knee.
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Affiliation(s)
- A M Davies
- Department of Musculoskeletal Radiology, The Royal Orthopaedic Hospital, Birmingham, United Kingdom
| | - A Patel
- Department of Musculoskeletal Radiology, The Royal Orthopaedic Hospital, Birmingham, United Kingdom
| | - C Azzopardi
- Department of Musculoskeletal Radiology, The Royal Orthopaedic Hospital, Birmingham, United Kingdom
| | - S L James
- Department of Musculoskeletal Radiology, The Royal Orthopaedic Hospital, Birmingham, United Kingdom
| | - R Botchu
- Department of Musculoskeletal Radiology, The Royal Orthopaedic Hospital, Birmingham, United Kingdom
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14
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Deckers C, de Rooy JWJ, Flucke U, Schreuder HWB, Dierselhuis EF, van der Geest ICM. Midterm MRI Follow-Up of Untreated Enchondroma and Atypical Cartilaginous Tumors in the Long Bones. Cancers (Basel) 2021; 13:cancers13164093. [PMID: 34439246 PMCID: PMC8393576 DOI: 10.3390/cancers13164093] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/29/2021] [Accepted: 08/11/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Over the last decade the incidence of enchondroma and atypical cartilaginous bone tumors (ACTs) increased enormously. Management of these tumors in the long bones is shifting towards active surveillance, as negative side effects of surgical treatment seem to outweigh the potential benefits. To support development of evidence-based guidelines for active surveillance, we studied the natural course of enchondroma and ACTs in the long bones. In this study, MRI analysis of 128 cases was performed with a minimum interval of 24 months between baseline and last MRI. Our data showed that the majority of the cartilaginous tumors (87%) remained stable or showed regression on MRI. Only 13% showed some progression on MRI, although none of the tumors developed characteristics of high-grade chondrosarcoma. Based on our results, active surveillance is considered safe for enchondroma and ACTs of the long bones, and follow-up schemes should be tailored on natural course. Abstract Management of atypical cartilaginous tumors (ACTs) in the long bones is shifting towards active surveillance to avoid unnecessary surgeries. The frequency and duration of active surveillance for these tumors is unclear as there is little knowledge of its biological behavior. In this retrospective study, we examined the natural course of enchondroma and ACTs through active surveillance. A total of 128 central cartilaginous tumors, located in the long bones, with a minimum interval of 24 months between baseline and last MRI were included. MRI characteristics (e.g., size, scalloping, fat entrapment) were scored and tumors were classified according to the changes between MRIs. Mean follow-up of this study was 50 months, range = 25–138 months. The majority of the cartilaginous tumors (87%) remained stable (n = 65) or showed regression (n = 46) on MRI. A total of 87% of the cases that developed tumor regression presented with entrapped fat at diagnosis. Only 13% (n = 17) showed some progression on MRI, although none of the tumors developed characteristics of high-grade chondrosarcoma. Based on our results, active surveillance is considered safe for enchondroma and ACTs of the long bones. We propose active surveillance for all asymptomatic enchondroma or ACTs in the long bones irrespective of tumor size, and follow-up schemes should be tailored on natural course.
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Affiliation(s)
- Claudia Deckers
- Department of Orthopedics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (H.W.B.S.); (E.F.D.); (I.C.M.v.d.G.)
- Correspondence:
| | - Jacky W. J. de Rooy
- Department of Radiology, Nuclear Medicine and Anatomy, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands;
| | - Uta Flucke
- Department of Pathology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands;
| | - H. W. Bart Schreuder
- Department of Orthopedics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (H.W.B.S.); (E.F.D.); (I.C.M.v.d.G.)
| | - Edwin F. Dierselhuis
- Department of Orthopedics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (H.W.B.S.); (E.F.D.); (I.C.M.v.d.G.)
| | - Ingrid C. M. van der Geest
- Department of Orthopedics, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands; (H.W.B.S.); (E.F.D.); (I.C.M.v.d.G.)
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15
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Imaging following surgery for primary appendicular bone tumours. Skeletal Radiol 2021; 50:1527-1555. [PMID: 33481074 DOI: 10.1007/s00256-021-03712-z] [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: 10/07/2020] [Revised: 12/22/2020] [Accepted: 01/10/2021] [Indexed: 02/02/2023]
Abstract
Primary bone tumours are uncommon, with sarcomas accounting for < 0.2% of all malignancies. The survival rate of primary bone sarcomas has significantly improved due to (neo)adjuvant therapy, while improved surgical techniques and development of new prostheses have shifted the surgical focus from amputation to limb preservation in the vast majority of patients. A wide variety of surgical options are available for the treatment of primary bone tumours which depend upon histological diagnosis, their appearance at the time of presentation and response to any (neo)adjuvant therapy as required. This review is intended to help radiologists familiarise themselves with the management of primary appendicular bone tumours and expected normal postoperative appearances for the various surgical techniques, and to recognise potential complications.
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16
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Incidental long bone cartilage lesions: is any further imaging workup needed? Skeletal Radiol 2021; 50:1189-1196. [PMID: 33169221 DOI: 10.1007/s00256-020-03664-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/22/2020] [Accepted: 11/01/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the rate of chondrosarcoma in incidentally discovered painless long bone cartilage lesions and to determine if any further imaging is needed. MATERIALS AND METHODS A cartilage lesion was said to be an enchondroma when it had characteristic matrix mineralization and no aggressive features. Search of all imaging reports and tumor board files for keywords enchondroma, cartilage lesion, chondroid, and chondrosarcoma. Retrospective review of medical records and imaging studies from 4.5-year period. Data points collected included patient age, sex, lesion site, size, symptoms, type of imaging, imaging appearance, and length of follow-up. Only patients with no pain were included as enchondroma. Patients with final diagnosis of chondrosarcoma were included for comparison of all features. RESULTS Only 1/73 (1.4%) patients with an initial incidentally discovered painless lesion was later diagnosed, with new symptoms, as atypical cartilage tumor. Average age was 59.4 years. Bones involved were the femur (n = 33), humerus (n = 30), tibia (n = 7), fibula (n = 2), and ulna (n = 1). Average enchondroma size was 3.9 cm (range 1.4-11.5). Average follow-up was 47 months (range 2-196 months). Eleven long bone chondrosarcomas were identified. All chondrosarcoma patients had pain and aggressive imaging findings. CONCLUSION Our study reveals that the rate of chondrosarcoma in incidentally found painless chondroid lesions without aggressive features in long bones is low. Imaging follow-up may be needed only in the setting of new symptoms.
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17
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The changing face of central chondrosarcoma of bone. One UK-based orthopaedic oncology unit's experience of 33 years referrals. J Clin Orthop Trauma 2021; 17:106-111. [PMID: 33747783 PMCID: PMC7972956 DOI: 10.1016/j.jcot.2021.02.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/26/2021] [Accepted: 02/17/2021] [Indexed: 11/22/2022] Open
Abstract
AIM To ascertain the changing incidence over time of the three commonest primary sarcomas of bone. Data obtained with particular reference to central chondrosarcoma from the annual referral rate to a large UK-based specialist orthopaedic oncology unit. To discuss how the "barnyard pen" analogy of cancers previously applied to certain commoner cancers can also be applicable to central chondrosarcoma (CS) of bone. MATERIALS AND METHODS A retrospective review was conducted of a computerised database identifying all central cartilage tumours (CCT) of bone, including enchondroma and CS subtypes, between 1985 and 2018. These were compared with the referrals of the other two commonest primary sarcomas of bone, osteosarcoma and Ewing sarcoma. RESULTS There was a total of 1507 CS showing a 68% overall increase in annual referral rate/incidence over the study period. 68% cases were the borderline malignant lesions now known as atypical cartilaginous tumour (ACT). The annual referral rate/incidence of this entity increased by 194% over the 30 years. Whereas, the annual referral rate/incidence for osteosarcoma and Ewing sarcoma was static for the past 20 years. CONCLUSION The annual incidence of central CS of bone showed a marked increase over the 33-year period as compared with both osteosarcoma and Ewing sarcoma. This is especially in the ACT category and is thought to be due to the increased provision of MRI scanning flagging up a rise in incidental findings. The spectrum of CCTs from benign to highly malignant elegantly fits the "barn yard" pen analogy and could prove useful as an explanatory tool for patients and clinicians unfamiliar with these diseases.
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18
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Sharif B, Lindsay D, Saifuddin A. The role of imaging in differentiating low-grade and high-grade central chondral tumours. Eur J Radiol 2021; 137:109579. [PMID: 33578088 DOI: 10.1016/j.ejrad.2021.109579] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 01/23/2021] [Accepted: 01/31/2021] [Indexed: 12/16/2022]
Abstract
Chondrosarcoma is a malignant cartilage matrix-producing tumour. Those arising de novo are called primary chondrosarcomas and are the second commonest primary malignant bone tumours. Numerous types of primary chondrosarcoma exist, namely conventional central (intramedullary), periosteal (juxta-cortical), clear cell, mesenchymal, and dedifferentiated. The biologic aggressiveness, prognosis and thus management of chondrosarcoma are dependent on the histological sub-type and grade. Accurate pre-operative diagnosis is therefore essential in determining management and outcome which requires a multidisciplinary approach taking into account clinical features, imaging findings and histopathology. In this review, we present the pertinent multimodality imaging features which aid in the differentiation of low-grade and high-grade conventional central chondrosarcoma.
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Affiliation(s)
- Ban Sharif
- Imaging Department, Northwick Park Hospital, United Kingdom.
| | - Daniel Lindsay
- Pathology Department, Royal National Orthopaedic Hospital, United Kingdom
| | - Asif Saifuddin
- Imaging Department, Royal National Orthopaedic Hospital, United Kingdom
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19
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Davies AM, Patel A, James SL, Azzopardi C, Botchu R. An imaging protocol for the management of central cartilage tumours of the proximal fibula. Clin Radiol 2020; 75:714.e1-714.e6. [PMID: 32665062 DOI: 10.1016/j.crad.2020.03.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 03/19/2020] [Indexed: 10/23/2022]
Abstract
AIM To retrospectively review a series of solitary central cartilage tumours (CCTs) of the proximal fibula and propose an imaging protocol for their management. MATERIALS AND METHODS Over 11 years, 48 patients were identified with a CCT of the proximal fibula. The initial magnetic resonance imaging (MRI) and follow-up imaging were assessed for tumour length, endosteal scalloping, or aggressive/malignant features. Each case was categorised according to the Birmingham Atypical Cartilage Tumour Imaging Protocol (BACTIP). The final diagnosis and outcome were reviewed to establish an appropriate imaging protocol for the management of similar cases in the future. RESULTS The final diagnosis based on imaging alone or imaging and histopathology was enchondroma in 46 cases (96%) and atypical cartilage tumour (ACT)/low-grade chondrosarcoma in two (4%). Using the BACTIP classification, the majority were type IC (48%) with type IA the second commonest (24%). Of 19 that underwent follow-up MRI, only two revealed any increase in length, neither of which was shown to be malignant. No cases re-presented later with evidence of malignant transformation. CONCLUSION There has been a significant increase in the number of CCTs of the proximal fibula referred to Royal Orthopaedic Hospital, Birmingham, over the past decade. This can largely be attributed to the increased use of MRI. The majority were benign with only 4% classified as an ACT. A modified BACTIP, the Fibular Atypical Cartilage Tumour Imaging Protocol (FACTIP) is presented, indicating which cases would benefit from follow-up imaging and which require referral to a specialist orthopaedic oncology service.
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Affiliation(s)
- A M Davies
- Department of Diagnostic Imaging, The Royal Orthopaedic Hospital, Birmingham, B31 2AP, UK
| | - A Patel
- Department of Diagnostic Imaging, The Royal Orthopaedic Hospital, Birmingham, B31 2AP, UK.
| | - S L James
- Department of Diagnostic Imaging, The Royal Orthopaedic Hospital, Birmingham, B31 2AP, UK
| | - C Azzopardi
- Department of Diagnostic Imaging, The Royal Orthopaedic Hospital, Birmingham, B31 2AP, UK
| | - R Botchu
- Department of Diagnostic Imaging, The Royal Orthopaedic Hospital, Birmingham, B31 2AP, UK
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20
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Oliveira I, Chavda A, Rajakulasingam R, Saifuddin A. Chondral tumours: discrepancy rate between needle biopsy and surgical histology. Skeletal Radiol 2020; 49:1115-1125. [PMID: 32147756 DOI: 10.1007/s00256-020-03406-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 02/26/2020] [Accepted: 02/27/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the reliability of image-guided core needle biopsy (IGCNB) for the diagnosis and grading of chondral tumours of bone compared with surgical histology. MATERIALS AND METHODS Retrospective review of patients with a chondral tumour of bone who underwent IGCNB and surgical resection between January 2007 and December 2017. Data collected included age, sex, skeletal location, technique used for IGCNB, IGCNB result including histological grade and comparison with surgical histology. RESULTS A total of 237 patients were included (135 males and 102 females with mean age 53.7 years, range 9-89 years). A total of 174 IGCNBs were CT-guided, 57 ultrasound-guided and 6 fluoroscopic-guided. Two hundred thirty-six of 237 (99.6%) IGCNBs were diagnostic for a chondral tumour, although grade could not be determined in 13 (5.5%) due to necrosis. A positive correlation for tumour grade between IGCNB and surgical histology was achieved in 181 cases (76.4%). In 36 patients (15.2%), IGCNB under-graded the tumour, while in 6 (2.5%), IGCNB over-graded the tumour. Discrepancy between IGCNB and surgical histology was significantly greater for surface/peripheral lesions (p = 0.02) and lesions arising from the flat bones or spine (p = 0.002). DISCUSSION IGCNB can achieve a diagnosis of a chondral tumour in a high proportion of cases when compared with final diagnosis from surgical resection specimens. However, correlation of tumour grade between IGCNB and resection histology is less reliable with discordance seen in almost one-quarter of cases, most commonly at non-appendicular sites. Therefore, IGCNB results should not be considered in isolation of imaging and clinical features when planning surgical management.
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21
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A retrospective validation of an imaging protocol for the management of solitary central cartilage tumours of the proximal humerus and around the knee. Clin Radiol 2019; 74:962-971. [DOI: 10.1016/j.crad.2019.08.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/21/2019] [Indexed: 01/07/2023]
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