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Deniz R, Güzelbey T, Mutlu İN, Erdim Ç, Akkuzu G, Karaalioğlu B, Özgür DS, Yıldırım F, Kılıçkesmez Ö, Bes C. Successful treatment of a rheumatoid arthritis patient with severe synovial hypertrophy and impaired shoulder function with microwave ablation technique. Skeletal Radiol 2024:10.1007/s00256-024-04580-z. [PMID: 38225401 DOI: 10.1007/s00256-024-04580-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: 10/25/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/17/2024]
Abstract
Rheumatoid arthritis (RA) is a chronic, inflammatory systemic disorder of synovial joints and results in polyarthritis, chronical degeneration, and finally deformities and ankylosis in severe cases. Synovitis and pannus formation are results of inflammatory changes and lead into restriction in joint movement. Shoulders are among the later affected and larger joints and formation of synovitis in early active stages and pannus in later stages might be concluded with frozen shoulder and severe impairment in functionality. These late-term changes cannot be controlled with systemic or local anti-inflammatory agents and synovectomy is chosen in some cases. However, the results are not satisfactory and recurrence is common. In this case report, we presented a case of RA with severe shoulder pain, restricted movement due to synovial hypertrophy, and pannus formation which are resistant to local and systemic interventions and not suitable for surgical or chemical synovectomy. Microwave ablation (MWA) was performed successfully without any complication and she well responded in terms of DAS-28, functional, and pain scores. Range of motion and funcitonal restriction were recovered. This case report describes the use and promising results of MWA in RA with severe synovial hypertrophy and pannus formation even in the absence of active arthritis and effusion. MWA is a safe and minimally invasive technique that can be easily performed in coordinance of rheumatologists and interventional radiologists in proper cases.
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Affiliation(s)
- Rabia Deniz
- Department of Rheumatology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey.
- School of Medicine, Faculty of Health Science, Department of Medical Biology and Genetics, Marmara University, Istanbul, Turkey.
| | - Tevfik Güzelbey
- Department of Radiology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - İlhan Nahit Mutlu
- Department of Radiology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Çağrı Erdim
- Department of Radiology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Gamze Akkuzu
- Department of Rheumatology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Bilgin Karaalioğlu
- Department of Rheumatology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Duygu Sevinç Özgür
- Department of Rheumatology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Fatih Yıldırım
- Department of Rheumatology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Özgür Kılıçkesmez
- Department of Radiology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Cemal Bes
- Department of Rheumatology, University of Health Sciences Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
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Pirola FJC, Dório M, Fuller R, Cobra JF, Sales LP, Figueiredo CP. A rare giant geode of humeral head in an uncontrolled rheumatoid arthritis: a case report. BMC Musculoskelet Disord 2023; 24:572. [PMID: 37452411 PMCID: PMC10347715 DOI: 10.1186/s12891-023-06695-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 07/04/2023] [Indexed: 07/18/2023] Open
Abstract
INTRODUCTION Rheumatoid Arthritis (RA) is a chronic inflammatory disease depicted by peripheral bone erosive damage leading to joint destruction, deformity and functional impairment. Shoulder involvement is less frequent than hands, wrists and feet, and relevant joint damage may be underdiagnosed if a lower threshold for careful analysis of this joint is not settled, especially in uncontrolled disease. CASE REPORT A 70-year-old male with a difficult-to-manage RA since 2010, presenting severe shoulder arthritis with MRI showing a striking giant geode in the left humeral head. CONCLUSION An impressive MRI image showing a giant geode in poorly controlled RA should alert rheumatologists to raise suspicion of shoulder involvement for early investigation and treatment.
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Affiliation(s)
- Fernanda Junqueira Cesar Pirola
- Department of Medical Science, Medical School, Pontifícia Universidade Católica de São Paulo, Sorocaba, Brazil
- Instituto de Reumatologia de São Paulo, São Paulo, Brazil
| | - Murillo Dório
- Instituto de Reumatologia de São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ricardo Fuller
- Rheumatology Division, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | - Lucas Peixoto Sales
- Instituto de Reumatologia de São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Camille Pinto Figueiredo
- Instituto de Reumatologia de São Paulo, São Paulo, Brazil.
- Rheumatology Division, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
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Noguchi A, Kurita T, Matsuzawa K. Clinical features of atlantoaxial involvement in patients with rheumatoid arthritis using 18F-fluorodeoxyglucose-positron emission tomography with computed tomography. Clin Rheumatol 2023:10.1007/s10067-023-06586-9. [PMID: 37000282 DOI: 10.1007/s10067-023-06586-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/20/2023] [Accepted: 03/23/2023] [Indexed: 04/01/2023]
Abstract
INTRODUCTION/OBJECTIVES Cervical spine involvement is one of the most serious complications in rheumatoid arthritis (RA). The study aim was to assess the clinical significance of atlantoaxial (AA) joint involvement detected by 18F-fluorodeoxyglucose (FDG)-positron emission tomography (PET) with computed tomography (CT) in patients with RA. METHOD A prospective cross-sectional study was conducted to evaluate AA joint involvement detected by FDG-PET/CT in consecutive RA patients from December 2017 to February 2022. We investigated the relationship between AA joint involvement and clinical data, including disease activity and patients' cervical symptoms. RESULTS Among 48 patients enrolled, abnormal FDG uptake at AA joint was detected in 13 (27%). Rheumatoid factor titre, initial disease activity score 28-erythrocyte sedimentation rate and total standardized uptake value were significantly higher in the 13 patients than in the others (P = 0.004, P < 0.001 and P = 0.001, respectively). All patients with abnormal FDG uptake at AA joint had some cervical symptoms regardless of cervical spine X-ray abnormalities. Neck pain on movement and at rest were more frequent in the 13 patients than in the others (P = 0.001 and P = 0.004, respectively). The most sensitive symptom associated with AA joint involvement was neck pain on movement (sensitivity, 69%), and the most specific symptom was neck pain at rest (specificity, 100%). CONCLUSIONS AA joint involvement was commonly observed by FDG-PET/CT in patients with active RA, independent of radiographic findings. Specific cervical symptoms can be important surrogate markers for detection of potential AA synovitis associated with active RA. Key Points • AA joint involvement was frequently seen in RA with high disease activity independent of radiographic findings. • Neck pain was a hallmark of AA joint involvement reflecting disease activity, and resting pain was highly specific.
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Affiliation(s)
- Atsushi Noguchi
- Department of Internal Medicine, Japanese Red Cross Kitami Hospital, N6E2, Kitami, Hokkaido, 090-8666, Japan.
| | - Takashi Kurita
- Department of Internal Medicine, Japanese Red Cross Kitami Hospital, N6E2, Kitami, Hokkaido, 090-8666, Japan
- Department of Infectious Diseases, Tokyo Medical and Dental University Hospital, Tokyo, Japan
| | - Katsura Matsuzawa
- Department of Radiology, Japanese Red Cross Kitami Hospital, Kitami, Japan
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Trang DAMT, Okamura K, Suto T, Sakane H, Yonemoto Y, Nakajima T, Tsushima Y, Chikuda H. Do biologic therapies reduce aortic inflammation in rheumatoid arthritis patients? Arthritis Res Ther 2021; 23:206. [PMID: 34344436 PMCID: PMC8330127 DOI: 10.1186/s13075-021-02585-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/14/2021] [Indexed: 12/31/2022] Open
Abstract
Objectives Rheumatoid arthritis (RA) patients have an increased risk of cardiovascular disease (CVD). In the present study, we evaluated the inflammatory activity of the ascending aorta in RA patients who received biological treatment. Methods We assessed the aortic wall inflammation of RA patients using 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography before and after 6 months of biologic therapies. We also compared the inflammatory activity at the aortic wall in RA patients with remission or low disease activity (RLDA) and those with moderate or high disease activity (MHDA). The aortic uptake was measured by the standardized uptake value (SUV) and the target-to-background ratio (TBR). Results A total of 64 patients were included in the analysis (mean age, 58.4 ± 13.8 years old; female, 77%). The Disease Activity Score for 28 joints (DAS28) erythrocyte sedimentation rate (ESR) had significantly decreased after 6 months: from 5.0 ± 1.2 to 3.3 ± 1.2 (p < 0.001). The FDG uptake in the ascending aorta changed from baseline to 6 months, showing a maximum SUV (SUVmax) of 1.83 ± 0.34 to 1.90 ± 0.34 (p = 0.059) and TBR of 1.71 ± 0.23 to 1.75 ± 0.24 (p = 0.222). The SUVmax and TBR after 6 months were significantly higher in the RLDA group than in the MHDA group (2.05 ± 0.32 vs. 1.79 ± 0.33 (p = 0.002) and 1.89 ± 0.33 vs. 1.65 ± 0.20 (p = 0.001), respectively). The percentage of monocytes also significantly increased from baseline to 6 months: from 5.9 ± 1.6 to 6.9 ± 2.6 (p = 0.032). Conclusion The inflammation activity at the ascending aorta in RA patients did not change significantly after 6 months of biological treatment. RA patients with a low disease activity or in clinical remission after 6 months of biological treatment still had an increased inflammatory activity at the aortic wall.
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Affiliation(s)
- D A M Thuy Trang
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Showamachi 3-39-15, Maebashi, Gunma, 371-8511, Japan.,Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Showa-machi 3-39-15, Maebashi, Gunma, 371-8511, Japan.,Radiology Center, Bach Mai Hospital, Hanoi, Vietnam
| | - Koichi Okamura
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Showamachi 3-39-15, Maebashi, Gunma, 371-8511, Japan.
| | - Takahito Suto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Showamachi 3-39-15, Maebashi, Gunma, 371-8511, Japan
| | - Hideo Sakane
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Showamachi 3-39-15, Maebashi, Gunma, 371-8511, Japan
| | - Yukio Yonemoto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Showamachi 3-39-15, Maebashi, Gunma, 371-8511, Japan
| | - Takahito Nakajima
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Showa-machi 3-39-15, Maebashi, Gunma, 371-8511, Japan.,Department of Diagnostic Radiology and Interventional Radiology, Tsukuba University, Tsukuba, Ibaraki, Japan
| | - Yoshito Tsushima
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Showa-machi 3-39-15, Maebashi, Gunma, 371-8511, Japan.,Research Program for Diagnostic and Molecular Imaging, Division of Integrated Oncology Research, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma, Japan
| | - Hirotaka Chikuda
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Showamachi 3-39-15, Maebashi, Gunma, 371-8511, Japan
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Shoulder tenderness was associated with the inflammatory changes on magnetic resonance imaging in patients with rheumatoid arthritis. Sci Rep 2019; 9:19599. [PMID: 31862930 PMCID: PMC6925129 DOI: 10.1038/s41598-019-55938-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 12/02/2019] [Indexed: 11/08/2022] Open
Abstract
The aim of this study was to assess the association between the shoulder tenderness and the inflammatory changes on magnetic resonance imaging (MRI) in the rheumatoid shoulder. Forty-one shoulders of 41 patients with rheumatoid arthritis (RA) were examined. We evaluated synovitis, erosion and bone marrow edema, by counting the numbers of each positive site, and rotator cuff tears on shoulder MRI. The association between the shoulder tenderness and the MRI findings were statistically analyzed. Twenty-three of 41 patients had tenderness in the shoulder joints. There were 20 shoulders (48.8%) with rotator cuff tear, and no significant difference was observed in the prevalence of rotator cuff tear between the tenderness group and non-tenderness group (p = 0.080). There were no significant differences in the demographic data between these two groups. In MRI findings, we found significant difference for the synovitis (p = 0.001) and bone marrow edema (p = 0.021). Synovitis was strongly associated with the shoulder tenderness (OR: 3.996, 95% CI: 1.651-9.671). Synovitis was the factor most associated with shoulder tenderness.
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Dam TT, Okamura K, Nakajima T, Yonemoto Y, Suto T, Arisaka Y, Tomonaga H, Tachibana M, Tajika T, Vu LD, Chikuda H, Tsushima Y. Axillary lymph-node metabolic activity assessment on 18F-FDG-PET/CT in rheumatoid arthritis patients treated with biologic therapies. Scand J Rheumatol 2019; 49:96-104. [PMID: 31578102 DOI: 10.1080/03009742.2019.1650106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Objective: Recent studies have provided new insights into the role of lymph nodes (LNs) in rheumatoid arthritis (RA). The aim of this study was to evaluate the metabolic activity of the axillary LNs in relation to that of the upper limb joints and the clinical assessment of disease activity in RA patients treated with biologic therapies.Method: 18F-fluorodeoxyglucose-positron emission tomography/computed tomography (18F-FDG-PET/CT) scans were acquired for 64 patients with RA at baseline and after 6 months of biologic therapy, and the patients' clinical status was evaluated. The maximum standardized uptake value (SUVmax), metabolic active volume, and total lesion glycolysis (TLG) were used to assess glucose metabolism in the LNs and 12 joints. Clinical evaluations included serum markers and the Disease Activity Score based on 28-joint count-erythrocyte sedimentation rate (DAS28-ESR).Results: Changes in the SUVmax and TLG for the axillary LNs correlated significantly with those of the ipsilateral wrist joints. There was a positive correlation between the changes in the three metabolic parameters of the axillary LNs and the changes in disease activity after treatment. After 6 months of biologic therapy, all metabolic parameters for the axillary LNs in patients with a DAS28-ESR < 3.2 were significantly lower than those of patients with a DAS28-ESR ≥ 3.2.Conclusion: A relationship between the glucose metabolism of the axillary LNs and the ipsilateral wrist joints was demonstrated by the 18F-FDG-PET/CT parameters. The metabolic activity and active volume of axillary LNs may reflect the therapeutic response to the biologic treatment of RA.
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Affiliation(s)
- T T Dam
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan.,Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan.,Radiology Center, Bach Mai Hospital, Hanoi, Vietnam
| | - K Okamura
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - T Nakajima
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Y Yonemoto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - T Suto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Y Arisaka
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - H Tomonaga
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - M Tachibana
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - T Tajika
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - L D Vu
- Radiology Center, Bach Mai Hospital, Hanoi, Vietnam.,Department of Radiology, Hanoi Medical University, Hanoi, Vietnam
| | - H Chikuda
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Y Tsushima
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan.,Research Program for Diagnostic and Molecular Imaging, Division of Integrated Oncology Research, Gunma University Initiative for Advanced Research (GIAR), Gumna, Japan
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Abstract
The manifestation of glenohumeral arthritis in the young adult is a devastating occurrence that can be difficult to manage. This review details the many underlying etiologies including genetic causes, congenital abnormalities, glenohumeral instability, posttraumatic lesions, postcapsulorraphy arthropathy, osteonecrosis, intraarticular pain pump postoperative use, radiofrequency/thermal capsulorraphy treatments, septic arthritis/infection, and inflammatory arthropathies. Although each of these potential causes have been well-studied, their contributions to the development of glenohumeral arthritis in the young person has not been described extensively.
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Affiliation(s)
- Michael S Laidlaw
- Department of Orthopaedic Surgery, University of Virginia, 400 Ray C. Hunt Drive, Suite 300, Charlottesville, VA 22903, USA
| | - Harrison S Mahon
- Department of Orthopaedic Surgery, University of Virginia, 400 Ray C. Hunt Drive, Suite 300, Charlottesville, VA 22903, USA
| | - Brian C Werner
- Department of Orthopaedic Surgery, University of Virginia, 400 Ray C. Hunt Drive, Suite 300, Charlottesville, VA 22903, USA.
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Fosse P, Kaiser MJ, Namur G, de Seny D, Malaise MG, Hustinx R. 18F- FDG PET/CT joint assessment of early therapeutic response in rheumatoid arthritis patients treated with rituximab. Eur J Hybrid Imaging 2018; 2:6. [PMID: 29782593 PMCID: PMC5954768 DOI: 10.1186/s41824-017-0022-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 12/20/2017] [Indexed: 11/27/2022] Open
Abstract
Background 18F–FDG PET/CT has been proposed in the evaluation of the disease activity in rheumatoid arthritis (RA). The goals of this study were to evaluate the reproducibility of the technique, to compare metabolic parameters to clinical, biological and ultrasonographic parameters before and after treatment and to evaluate whether the early metabolic response was related to the outcome. 18F- FDG PET/CT of the hands, wrists and knees was obtained in 15 patients with anti-TNFα refractory RA, at baseline and 16 weeks after treatment with rituximab. The number of PET-positive joints (PET+ joints), the cumulative standard uptake value (cSUV) and the composite index (CI) were defined. The composite clinical index DAS28, CRP serum levels and the number of joints positive at ultrasonography (US+ joints) and the cumulative synovial thickness (CST) were also assessed at baseline and week 24. Results High interobserver agreement was observed, both at baseline and after treatment. The number of PET+ joints was not correlated with the number of joints tender or swollen. The 3 metabolic parameters were strongly correlated with US, CRP and DAS28 at baseline and with US and CRP (CSUV, CI) at week 16, but no longer with the DAS28 index. The metabolic response based on the change in the visual PET/CT joint analysis predicted the outcome with a high negative predictive value of 91%, with a 91% specificity, and an 86% accuracy. Conclusions These preliminary data suggest that 18F- FDG PET/CT is a reproducible and accurate tool for evaluating disease activity in refractory rheumatoid arthritis and its non-response to rituximab. The correlation obtained with US joint assessment gives relevance to objective diseased joints through imaging techniques.
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Affiliation(s)
- Pacôme Fosse
- 3Division of Nuclear Medicine, University Hospital of Angers, Angers, France
| | - Marie-Joelle Kaiser
- 2Division of Rheumatology, University of Liège and CHU de Liège, Liège, Belgium
| | - Gauthier Namur
- 1Division of Nuclear Medicine, University of Liège and CHU de Liège, Sart Tilman B35, 4000 Liège, Belgium
| | - Dominique de Seny
- 2Division of Rheumatology, University of Liège and CHU de Liège, Liège, Belgium
| | - Michel G Malaise
- 2Division of Rheumatology, University of Liège and CHU de Liège, Liège, Belgium
| | - Roland Hustinx
- 1Division of Nuclear Medicine, University of Liège and CHU de Liège, Sart Tilman B35, 4000 Liège, Belgium
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Bhattarai A, Nakajima T, Sapkota S, Arisaka Y, Tokue A, Yonemoto Y, Tsushima Y. Diagnostic value of 18F-fluorodeoxyglucose uptake parameters to differentiate rheumatoid arthritis from other types of arthritis. Medicine (Baltimore) 2017; 96:e7130. [PMID: 28640086 PMCID: PMC5484194 DOI: 10.1097/md.0000000000007130] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 12/23/2022] Open
Abstract
We aimed evaluate F-fluorodeoxyglucose uptake at major joints for differentiating patients with rheumatoid arthritis (RA) from those with non-RA arthritis using F-fluorodeoxyglucose (FDG)-positron emission tomography (PET).Eighteen patients with RA (13 women; age, 66.8 ± 13.2 years) and 17 patients with non-RA (6 women; age, 50.8 ± 12.5 years) were included. Twelve joints of each patient were examined: shoulder, elbow, wrist, hip, knee, and ankle on both sides. A visual scoring (VS) system was used; quantitative parameters such as maximum standardized uptake value (SUVmax), metabolic active volume (MAV), and total lesion glycolysis (TLG) were evaluated. Total score and value of each parameter were compared between the RA and non-RA groups.Total VS score (mean, 37.7 ± 9.0 vs 21.9 ± 7.2; P < .0001) and SUVmax (mean, 28.1 ± 8.5 vs 17.9 ± 5.8; P < .001) were significantly higher in the RA group than in the non-RA group. A significant between-group difference was also observed with respect to total MAV (608.3 ± 370.7 vs 176.5 ± 217.8; P < .001) and total TLG (1139.3 ± 759.1 vs 289.5 ± 395.4; P < .001). Receiver operating characteristic curve analysis revealed that total VS had the highest area under curve (.92), with sensitivity and specificity of 88.9% and 76.4%, respectively.Quantitative PET parameters could differentiate RA from non-RA. Total VS score, however, appears to be the best convenient qualitative tool for diagnosing RA.
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Affiliation(s)
- Anu Bhattarai
- Department of Diagnostic Radiology and Nuclear Medicine
| | | | | | | | - Azusa Tokue
- Department of Diagnostic Radiology and Nuclear Medicine
| | - Yukio Yonemoto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine
| | - Yoshito Tsushima
- Department of Diagnostic Radiology and Nuclear Medicine
- Research Program for Diagnostic and Molecular Imaging, Division of Integrated Oncology Research, Gunma University Initiative for Advanced Research (GIAR), Gunma, Japan
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