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Pouncey AL, Yeldham G, Magan T, Lucenteforte E, Jaffer U, Virgili G. Halo sign on temporal artery ultrasound versus temporal artery biopsy for giant cell arteritis. Cochrane Database Syst Rev 2024; 2:CD013199. [PMID: 38323659 PMCID: PMC10848297 DOI: 10.1002/14651858.cd013199.pub2] [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: 02/08/2024]
Abstract
BACKGROUND Giant cell arteritis (GCA) is a systemic, inflammatory vasculitis primarily affecting people over the age of 50 years. GCA is treated as a medical emergency due to the potential for sudden, irreversible visual loss. Temporal artery biopsy (TAB) is one of the five criteria of the American College of Rheumatology (ACR) 1990 classification, which is used to aid the diagnosis of GCA. TAB is an invasive test, and it can be slow to obtain a result due to delays in performing the procedure and the time taken for histopathologic assessment. Temporal artery ultrasonography (US) has been demonstrated to show findings in people with GCA such as the halo sign (a hypoechoic circumferential wall thickening due to oedema), stenosis or occlusion that can help to confirm a diagnosis more swiftly and less invasively, but requiring more subjective interpretation. This review will help to determine the role of these investigations in clinical practice. OBJECTIVES To evaluate the sensitivity and specificity of the halo sign on temporal artery US, using the ACR 1990 classification as a reference standard, to investigate whether US could be used as triage for TAB. To compare the accuracy of US with TAB in the subset of paired studies that have obtained both tests on the same patients, to investigate whether it could replace TAB as one of the criteria in the ACR 1990 classification. SEARCH METHODS We used standard Cochrane search methods for diagnostic accuracy. The date of the search was 13 September 2022. SELECTION CRITERIA We included all participants with clinically suspected GCA who were investigated for the presence of the halo sign on temporal artery US, using the ACR 1990 criteria as a reference standard. We included studies with participants with a prior diagnosis of polymyalgia rheumatica. We excluded studies if participants had had two or more weeks of steroid treatment prior to the investigations. We also included any comparative test accuracy studies of the halo sign on temporal artery US versus TAB, with use of the 1990 ACR diagnostic criteria as a reference standard. Although we have chosen to use this classification for the purpose of the meta-analysis, we accept that it incorporates unavoidable incorporation bias, as TAB is itself one of the five criteria. This increases the specificity of TAB, making it difficult to compare with US. We excluded case-control studies, as they overestimate accuracy, as well as case series in which all participants had a prior diagnosis of GCA, as they can only address sensitivity and not specificity. DATA COLLECTION AND ANALYSIS Two review authors independently assessed the studies for inclusion in the review. They extracted data using a standardised data collection form and employed the QUADAS-2 tool to assess methodological quality. As not enough studies reported data at our prespecified halo threshold of 0.3 mm, we fitted hierarchical summary receiver operating characteristic (ROC) models to estimate US sensitivity and also to compare US with TAB. We graded the certainty of the evidence using the GRADE approach. MAIN RESULTS Temporal artery ultrasound was investigated in 15 studies (617 participants with GCA out of 1479, 41.7%), with sample sizes ranging from 20 to 381 participants (median 69). There was wide variation in sensitivity with a median value of 0.78 (interquartile range (IQR) 0.45 to 0.83; range 0.03 to 1.00), while specificity was fair to good in most studies with a median value of 0.91 (IQR 0.78 to 1.00; range 0.40 to 1.00) and four studies with a specificity of 1.00. The hierarchical summary receiver operating characteristic (HSROC) estimate of sensitivity (95% confidence interval (CI)) at the high specificity of 0.95 was 0.51 (0.21 to 0.81), and 0.84 (0.58 to 0.95) at 0.80 specificity. We considered the evidence on sensitivity and specificity as of very low certainty due to risk of bias (-1), imprecision (-1), and inconsistency (-1). Only four studies reported data at a halo cut-off > 0.3 mm, finding the following sensitivities and specificities (95% CI): 0.80 (0.56 to 0.94) and 0.94 (0.81 to 0.99) in 55 participants; 0.10 (0.00 to 0.45) and 1.00 (0.84 to 1.00) in 31 participants; 0.73 (0.54 to 0.88) and 1.00 (0.93 to 1.00) in 82 participants; 0.83 (0.63 to 0.95) and 0.72 (0.64 to 0.79) in 182 participants. Data on a direct comparison of temporal artery US with biopsy were obtained from 11 studies (808 participants; 460 with GCA, 56.9%). The sensitivity of US ranged between 0.03 and 1.00 with a median of 0.75, while that of TAB ranged between 0.33 and 0.92 with a median of 0.73. The specificity was 1.00 in four studies for US and in seven for TAB. At high specificity (0.95), the sensitivity of US and TAB were 0.50 (95% CI 0.24 to 0.76) versus 0.80 (95% CI 0.57 to 0.93), respectively, and at low specificity (0.80) they were 0.73 (95% CI 0.49 to 0.88) versus 0.92 (95% CI 0.69 to 0.98). We considered the comparative evidence on the sensitivity of US versus TAB to be of very low certainty because specificity was overestimated for TAB since it is one of the criteria used in the reference standard (-1), together with downgrade due to risk of bias (-1), imprecision (-1), and inconsistency (-1) for both sensitivity and specificity. AUTHORS' CONCLUSIONS There is limited published evidence on the accuracy of temporal artery US for detecting GCA. Ultrasound seems to be moderately sensitive when the specificity is good, but data were heterogeneous across studies and either did not use the same halo thickness threshold or did not report it. We can draw no conclusions from accuracy studies on whether US can replace TAB for diagnosing GCA given the very low certainty of the evidence. Future research could consider using the 2016 revision of the ACR criteria as a reference standard, which will limit incorporation bias of TAB into the reference standard.
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Affiliation(s)
| | - Geoffrey Yeldham
- Department of Ophthalmology, Cardiff & Vale University Health Board, Cardiff, UK
| | - Tejal Magan
- Kings College NHS Foundation Trust, London, UK
| | - Ersilia Lucenteforte
- Department of Statistics, Computer Science, Applications "G. Parenti", University of Florence, Florence, Italy
| | - Usman Jaffer
- Imperial College Healthcare NHS Trust, London, UK
| | - Gianni Virgili
- Department of Neurosciences, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
- IRCCS- Fondazione Bietti, Rome, Italy
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Chrysidis S, Duftner C, Dejaco C, Schäfer VS, Ramiro S, Carrara G, Scirè CA, Hocevar A, Diamantopoulos AP, Iagnocco A, Mukhtyar C, Ponte C, Naredo E, De Miguel E, Bruyn GA, Warrington KJ, Terslev L, Milchert M, D'Agostino MA, Koster MJ, Rastalsky N, Hanova P, Macchioni P, Kermani TA, Lorenzen T, Døhn UM, Fredberg U, Hartung W, Dasgupta B, Schmidt WA. Definitions and reliability assessment of elementary ultrasound lesions in giant cell arteritis: a study from the OMERACT Large Vessel Vasculitis Ultrasound Working Group. RMD Open 2018; 4:e000598. [PMID: 29862043 PMCID: PMC5976098 DOI: 10.1136/rmdopen-2017-000598] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 03/04/2018] [Accepted: 03/06/2018] [Indexed: 11/21/2022] Open
Abstract
Objectives To define the elementary ultrasound (US) lesions in giant cell arteritis (GCA) and to evaluate the reliability of the assessment of US lesions according to these definitions in a web-based reliability exercise. Methods Potential definitions of normal and abnormal US findings of temporal and extracranial large arteries were retrieved by a systematic literature review. As a subsequent step, a structured Delphi exercise was conducted involving an expert panel of the Outcome Measures in Rheumatology (OMERACT) US Large Vessel Vasculitis Group to agree definitions of normal US appearance and key elementary US lesions of vasculitis of temporal and extracranial large arteries. The reliability of these definitions on normal and abnormal blood vessels was tested on 150 still images and videos in a web-based reliability exercise. Results Twenty-four experts participated in both Delphi rounds. From originally 25 statements, nine definitions were obtained for normal appearance, vasculitis and arteriosclerosis of cranial and extracranial vessels. The ‘halo’ and ‘compression’ signs were the key US lesions in GCA. The reliability of the definitions for normal temporal and axillary arteries, the ‘halo’ sign and the ‘compression’ sign was excellent with inter-rater agreements of 91–99% and mean kappa values of 0.83–0.98 for both inter-rater and intra-rater reliabilities of all 25 experts. Conclusions The ‘halo’ and the ‘compression’ signs are regarded as the most important US abnormalities for GCA. The inter-rater and intra-rater agreement of the new OMERACT definitions for US lesions in GCA was excellent.
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Affiliation(s)
- Stavros Chrysidis
- Department of Rheumatology, Hospital of Southwest Jutland, Esbjerg, Denmark
| | - Christina Duftner
- Department of Internal Medicine, Clinical Division of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Dejaco
- Department of Rheumatology, Medical University of Graz, Graz, Austria.,Department of Rhematology, Hospital of Bruneck, Bruneck, Italy
| | - Valentin S Schäfer
- III. Medical Clinic, Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Berlin, Germany
| | - Sofia Ramiro
- Leiden University Medical Center, Leiden, The Netherlands
| | - Greta Carrara
- Epidemiology Unit, Italian Society for Rheumatology (SIR), Milan, Italy
| | - Carlo Alberto Scirè
- Epidemiology Unit, Italian Society for Rheumatology (SIR), Milan, Italy.,Department of Rheumatology, University of Ferrara, Ferrara, Italy
| | - Alojzija Hocevar
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | | | - Annamaria Iagnocco
- Dipartimento Scienze Cliniche e Biologiche - Reumatologia, Università degli Studi di Torino, Torino, Italy
| | - Chetan Mukhtyar
- Department of Rheumatology, Norfolk and Norwich University Hospital, Norwich, UK
| | - Cristina Ponte
- Hospital de Santa Maria - CHLN, Lisbon Academic Medical Centre, Lisbon, Portugal
| | | | | | | | | | - Lene Terslev
- Copenhagen Center for Arthritis Research (COPECARE), Copenhagen, Denmark
| | - Marcin Milchert
- Department of Rheumatology and Internal Medicine, Pomeranian Medical University, Szczecin, Poland
| | | | | | | | - Petra Hanova
- Department of Rheumatology, First Faculty of Medicine, Charles University of Prague, Prague, Czech Republic
| | | | - Tanaz A Kermani
- Department of Rheumatology, University of California, Los Angeles, California, USA
| | - Tove Lorenzen
- Diagnostic Centre Region Hospital Silkeborg, Silkeborg, Denmark
| | - Uffe Møller Døhn
- Copenhagen Center for Arthritis Research (COPECARE), Copenhagen, Denmark
| | - Ulrich Fredberg
- Diagnostic Centre Region Hospital Silkeborg, Silkeborg, Denmark.,Department of Rheumatology, Odense University Hospital, Odense, Denmark
| | | | - Bhaskar Dasgupta
- Southend University Hospital NHS Foundation Trust & Anglia Ruskin University, Southend-on-Sea, UK
| | - Wolfgang A Schmidt
- Medical Centre for Rheumatology, Immanuel Krankenhaus Berlin, Berlin, Germany
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Arida A, Kyprianou M, Kanakis M, Sfikakis PP. The diagnostic value of ultrasonography-derived edema of the temporal artery wall in giant cell arteritis: a second meta-analysis. BMC Musculoskelet Disord 2010; 11:44. [PMID: 20210989 PMCID: PMC2837862 DOI: 10.1186/1471-2474-11-44] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Accepted: 03/08/2010] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Ultrasonography of temporal arteries is not commonly used in the approach of patients with suspected giant cell arteritis (GCA) in clinical practice. A meta-analysis of primary studies available through April 2004 concluded that ultrasonography could indeed be helpful in diagnosing GCA. We specifically re-examined the diagnostic value of the ultrasonography-derived halo sign, a dark hypoechoic circumferential thickening around the artery lumen, indicating vasculitic wall edema, in GCA. METHODS Original, prospective studies in patients with suspected GCA that examined ultrasonography findings of temporal arteries using the ACR 1990 classification criteria for GCA as reference standard, published through 2009, were identified. Only eight studies involving 575 patients, 204 of whom received the final diagnosis of GCA, fulfilled technical quality criteria for ultrasound. Weighted sensitivity and specificity estimates of the halo sign were assessed, their possible heterogeneity was investigated and pooled diagnostic odds ratio was determined. RESULTS Unilateral halo sign achieved an overall sensitivity of 68% (95% CI, 0.61-0.74) and specificity of 91% (95% CI, 0.88-0.94) for GCA. The values of inconsistency coefficient (I2) of both sensitivity and specificity of the halo sign, showed significant heterogeneity concerning the results between studies. Pooled diagnostic odds ratio, expressing how much greater the odds of having GCA are for patients with halo sign than for those without, was 34 (95% CI, 8.21-138.23). Diagnostic odds ratio was further increased to 65 (95% CI, 17.86-236.82) when bilateral halo signs were present (sensitivity/specificity of 43% and 100%, respectively). In both cases, it was found that DOR was constant across studies. CONCLUSION Temporal artery edema demonstrated as halo sign should be always looked for in ultrasonography when GCA is suspected. Providing that currently accepted technical quality criteria are fulfilled, halo sign's sensitivity and specificity are comparable to those of autoantibodies used as diagnostic tests in rheumatology. Validation of revised GCA classification criteria which will include the halo sign may be warranted.
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Affiliation(s)
- Aikaterini Arida
- First Dept. of Propedeutic and Internal Medicine, Laikon Hospital, Athens University Medical School, Athens, Greece
| | - Miltiades Kyprianou
- First Dept. of Propedeutic and Internal Medicine, Laikon Hospital, Athens University Medical School, Athens, Greece
| | - Meletios Kanakis
- First Dept. of Propedeutic and Internal Medicine, Laikon Hospital, Athens University Medical School, Athens, Greece
| | - Petros P Sfikakis
- First Dept. of Propedeutic and Internal Medicine, Laikon Hospital, Athens University Medical School, Athens, Greece
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