{"title":"Eosinophilic Granulomatosis with Polyangiitis - description of a pediatric patient with severe disease.","authors":"Ana Barbosa Rodrigues, Filipa Oliveira-Ramos, Rosário Ferreira, Cristina Camilo, Tiago Oliveira, Patrícia Costa-Reis","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Introduction: </strong>Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare vasculitis of small and medium sized blood vessels.</p><p><strong>Case description: </strong>Thirteen-year-old male, with history of rhinitis and asthma, who presented to the emergency room with one week of asthenia, arthralgias and myalgias and two days of fever. A diffuse petechial rash, palpable purpura and polyarthritis were detected on examination. Leukocytosis (34990/μL) with eosinophilia (66%) and elevated C-reactive protein were identified. The patient was admitted and ceftriaxone and doxycycline were started. The clinical status deteriorated in the following days. The patient developed myopericarditis, bilateral pulmonary infiltrates and pleural effusion, requiring mechanical ventilation and aminergic support. Non-clonal eosinophils were detected on the bone marrow aspiration and the skin biopsy showed leukocytoclastic vasculitis with eosinophils. Antineutrophil cytoplasmic antibodies and genetic analysis for hypereosinophilic syndrome mutations were negative. After treatment with methylprednisolone for three days a fast clinical, laboratory and radiological improvement occurred. The patient started azatiophrine and reduced steroids progressively. No relapses occurred since diagnosis five years ago.</p><p><strong>Discussion: </strong>Clinical suspicion and early treatment of EGPA are crucial to improve prognosis.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9809888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Filipe Oliveira Pinheiro, Maria Seabra Rato, Pedro Madureira, Filipe Araújo, Maria João Salvador, Vanessa Fraga, Luisa Brites, Filipe Cunha Santos, Augusto Silva, Ana Rita Lopes, Margarida Cruz, João Paulo Vilas Boas, Maria Pontes Ferreira, Beatriz Samões, Tiago Beirão, Inês Santos, Daniel Carvalho, Lúcia Costa, Miguel Bernardes
{"title":"Severe infections in Portuguese patients with rheumatoid arthritis under biologic treatment - a multicenter, nationwide study (SIPPRA-B Study).","authors":"Filipe Oliveira Pinheiro, Maria Seabra Rato, Pedro Madureira, Filipe Araújo, Maria João Salvador, Vanessa Fraga, Luisa Brites, Filipe Cunha Santos, Augusto Silva, Ana Rita Lopes, Margarida Cruz, João Paulo Vilas Boas, Maria Pontes Ferreira, Beatriz Samões, Tiago Beirão, Inês Santos, Daniel Carvalho, Lúcia Costa, Miguel Bernardes","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Introduction: </strong>Despite years of experience with biological disease modifying anti-rheumatic drugs (bDMARD) in rheumatoid arthritis (RA), little is known about differences in infectious risk among bDMARDs. The aim of this study was to assess the incidence and type of infections in RA patients on bDMARDs and to determine possible predictors.</p><p><strong>Methods: </strong>A retrospective multicenter cohort study that included patients registered in the Rheumatic Diseases Portuguese Registry (Reuma.pt) with RA, and exposed to at least one bDMARD until April 2021. RA patients under bDMARD and with at least one episode of severe infection (SI), defined as infection that requires hospitalization, use of parenteral antibiotics or that resulted in death, were compared to patients with no report of SI. Demographic and clinical data at baseline and at the time of each SI were collected to establish comparisons between different groups of bDMARDs. Comparisons between different bDMARDs were assessed and logistic regression was performed to identify predictors of SI.</p><p><strong>Results: </strong>We included 3394 patients, 2833 (83.5%) female, with a mean age at RA diagnosis of 45.5±13.7 years. SI was diagnosed in 142 of the 3394 patients evaluated (4.2%), totaling 151 episodes of SI. At baseline, patients with SI had a significantly higher proportion of prior orthopedic surgery, asthma, interstitial lung disease, chronic kidney disease and corticosteroid use, higher mean age and longer median disease duration at first bDMARD. Nine patients died (6.0%). Ninety-two SI (60.9%) occurred with the first bDMARD, the majority leading to discontinuation of the bDMARD within 6 months (n=75, 49.7%), while 65 (43.0%) restarted the same bDMARD and 11 (7.3%) switched to another bDMARD (6 of them to a different mechanism of action). In the multivariate analysis, we found that chronic kidney disease, asthma, infliximab, corticosteroid use, interstitial lung disease, previous orthopedic surgery, higher Health Assessment Questionnaire and DAS284V-ESR are independent predictors of SI.</p><p><strong>Conclusion: </strong>This study described the incidence and types of SI among Portuguese RA patients on biologics, identifying several predictors of SI, both globally and with different bDMARDs. Physicians should be aware of the real-word infectious risk in RA patients on bDMARDs when making treatment decisions.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9809889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sara Paiva Dinis, Francisca Guimarães, Hugo Parente, Catarina Dantas Soares, Maria Pontes Ferreira, Soraia Azevedo, Daniela Santos Faria, Daniela Peixoto, Carmo Afonso, Filipa Teixeira, José Tavares-Costa
{"title":"Pyogenic extensor tenosynovitis of the ankle with associated synovial cyst caused by Streptococcus pneumoniae - a case report.","authors":"Sara Paiva Dinis, Francisca Guimarães, Hugo Parente, Catarina Dantas Soares, Maria Pontes Ferreira, Soraia Azevedo, Daniela Santos Faria, Daniela Peixoto, Carmo Afonso, Filipa Teixeira, José Tavares-Costa","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9811903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Almurtada Razok, Maria Emilia Romero Noboa, Faria Sami, Kirtan Nandlalbhai Patolia, Saman Tanveer
{"title":"IgG4-related disease and isolated retroperitoneal fibrosis: A narrative review.","authors":"Almurtada Razok, Maria Emilia Romero Noboa, Faria Sami, Kirtan Nandlalbhai Patolia, Saman Tanveer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Retroperitoneal fibrosis (RPF) can occur due to many etiologies and is categorized into idiopathic and secondary. Etiologies of secondary RPF include medications, autoimmune disease, malignancy, and IgG4-related disease (IgG4-RD). Although IgG4-RD usually involves multiple systems synchronically including the pancreas, aorta, and kidneys, it can present with isolated RPF without involvement of other organ systems. Caution must be exercised in these instances as the diagnosis should be confirmed based on specific clinical, radiographic, and histopathologic criteria. Such confirmation can affect the work-up and therapeutic approach as treatment with corticosteroids can lead to remission, both clinically and radiographically.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9811902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
José Marona, Alexandre Sepriano, Sofia Ramiro, Diogo Almeida, Luísa Brites, Maura Couto, Inês Cunha, Bruno Miguel Fernandes, Jorge Garcia, Ana Teresa Melo, Teresa Nóvoa, Margarida Oliveira, Patrícia Pinto, Maria José Santos, Cândida Silva, João Eurico Fonseca, Filipe César Araújo
{"title":"Effectiveness of biosimilar infliximab CT-P13 compared to originator infliximab in biological-naïve patients with rheumatoid arthritis and axial spondyloarthritis: data from the Portuguese Register.","authors":"José Marona, Alexandre Sepriano, Sofia Ramiro, Diogo Almeida, Luísa Brites, Maura Couto, Inês Cunha, Bruno Miguel Fernandes, Jorge Garcia, Ana Teresa Melo, Teresa Nóvoa, Margarida Oliveira, Patrícia Pinto, Maria José Santos, Cândida Silva, João Eurico Fonseca, Filipe César Araújo","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objectives: </strong>To compare the effectiveness of the infliximab biosimilar CT-P13 with originator infliximab over 24 months of follow-up in biological-naïve patients with rheumatoid arthritis (RA) and axial spondyloarthritis (axSpA).</p><p><strong>Methods: </strong>Biological-naïve patients from the Rheumatic Diseases Portuguese Register (Reuma.pt), with a clinical diagnosis of RA or axSpA, who were starting either the infliximab biosimilar CT-P13 or the originator infliximab after 2014 (date of market entry of CT-P13 in Portugal), were included. Patients on biosimilar and originator were compared regarding different response outcomes at 3 and 6 months, adjusting for age, sex and baseline C-reactive protein (CRP). The main outcome was the change in DAS28-erytrocyte sedimentation rate (ESR) for RA and the ASDAS-CRP for axSpA. Additionally, the effect of infliximab biosimilar vs originator on different response outcomes over 24 months of follow-up was tested with longitudinal generalized estimating equations (GEE) models.</p><p><strong>Results: </strong>In total, 140 patients were included, 66 (47%) of which with RA. The distribution of patients starting the infliximab biosimilar and the originator was the same between the two diseases (approximately 60% and 40%, respectively). From the 66 patients with RA, 82% were females, mean age was 56 years (SD 11) and mean DAS28-ESR 4.9 (1.3) at baseline. As for the patients with axSpA, 53% were males, mean age was 46 years (13) and mean ASDAS-CRP 3.7 (0.9) at baseline. There were no differences in efficacy between RA patients treated with the infliximab biosimilar and the originator, either at 3 months (∆DAS28-ESR: -0.6 (95% CI -1.3; 0.1) vs -1.2 (-2.0; -0.4)), or at 6 months (∆DAS28-ESR: -0.7 (-1.5; 0.0) vs -1.5 (-2.4; -0.7)). This was also true for patients with axSpA (∆ASDAS-CRP at 3 months: -1.6 (-2.0; -1.1) vs -1.4 (-1.8; -0.9) and at 6 months: -1.5 (-2.0; -1.1) vs -1.1 (-1.5; -0.7)). Results were similar with the longitudinal models over 24 months.</p><p><strong>Conclusion: </strong>There are no differences in effectiveness between the infliximab biosimilar CT-P13 and the infliximab originator in the treatment of biological-naïve patients with active RA and axSpA in clinical practice.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9809887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Margarida Correia, Carla Campinho Ferreia, Emanuel Costa, Diogo Esperança Almeida, Joana Leite Silva, Ana Roxo Ribeiro, Sofia Marques, Marcos Cerqueira
{"title":"Hypokalemic paralysis due to renal tubular acidosis: uncommon initial manifestation of primary Sjögren´s syndrome.","authors":"Margarida Correia, Carla Campinho Ferreia, Emanuel Costa, Diogo Esperança Almeida, Joana Leite Silva, Ana Roxo Ribeiro, Sofia Marques, Marcos Cerqueira","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Primary Sjögren´s Syndrome is an immune-mediated disease characterized by exocrine glands dysfunction due to lymphoplasmacytic infiltration with sicca symptoms being one of its main features. The disease may, however, present as distal renal tubular acidosis due to renal involvement, which can range from asymptomatic to life-threatening. We describe the case of a 33-year-old woman with hypokalemic paralysis and metabolic acidosis secondary to distal renal tubular acidosis, leading to the diagnosis of primary Sjögren´s Syndrome. Although rare, recognizing primary Sjögren´s Syndrome as a possible cause of distal renal tubular acidosis may elicit an earlier diagnosis and treatment, improving the patient´s prognosis.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9811905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Filipe Oliveira Pinheiro, Rui Gaspar, Bruno Miguel Fernandes, Armando Peixoto, Guilherme Macedo, Iva Brito
{"title":"Cumulative dose and length of methotrexate treatment were not shown to be predictors of hepatic fibrosis by elastography - a monocentric cohort study.","authors":"Filipe Oliveira Pinheiro, Rui Gaspar, Bruno Miguel Fernandes, Armando Peixoto, Guilherme Macedo, Iva Brito","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>Methotrexate is used in several inflammatory diseases, such as rheumatoid arthritis (RA), spondyloarthritis (SpA) or inflammatory bowel disease (IBD). There has been some controversy regarding methotrexate liver toxicity, especially since the use of newer techniques. We aim to evaluate the prevalence of liver injury in methotrexate-treated patients with inflammatory diseases.</p><p><strong>Methods: </strong>We performed a cross-sectional study where consecutive patients diagnosed with RA, SpA or IBD, treated with methotrexate, were submitted to liver elastography. The cutoff for fibrosis was ≥7.1 kPa. Comparisons between groups were evaluated using chi-square, t test and Mann-Whitney U test. Correlations were made between continuous variables using Spearman correlation. Logistic regression was performed to determine predictors of fibrosis.</p><p><strong>Results: </strong>A total of 101 patients were included, 60 (59.4%) females, aged 46.2±12.6 years. Eleven patients (10.9%) had fibrosis, with a median score of 4.8 (4.1-5.9) kPa. Patients with fibrosis had higher rates of daily alcohol consumption (63.6% vs 31.1%, p=0.045). Methotrexate exposure time (OR 1.001, 95% CI 0.999-1.003, p=0.549) and cumulative dose (OR 1.000, 95% CI 1000-1000, p=0.629) were shown not to be predictors of fibrosis, unlike alcohol (OR 3.875, 95% CI 1.049-14.319, p=0.042). In multivariate logistic regression analysis, methotrexate cumulative and exposure times were not predictors of significant fibrosis, even when adjusted for alcohol consumption.</p><p><strong>Conclusions: </strong>In this study, we found that fibrosis detected on hepatic elastography was not associated with methotrexate, unlike alcohol. Therefore, it is of paramount importance to redefine risk factors for liver toxicity in patients with inflammatory diseases under treatment with methotrexate.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10747790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Filipe Oliveira Pinheiro, Mariana Leuzinger-Dias, Bruno Miguel Fernandes, Diogo Fonseca, Joana Vilaça, Luís Figueira, Iva Brito
{"title":"Outcome of Uveitis in Juvenile Idiopathic Arthritis and Spondyloarthritis Patients - A 5-Year Follow-Up Study.","authors":"Filipe Oliveira Pinheiro, Mariana Leuzinger-Dias, Bruno Miguel Fernandes, Diogo Fonseca, Joana Vilaça, Luís Figueira, Iva Brito","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>Uveitis is a frequent complication of juvenile idiopathic arthritis (JIA) and spondyloarthritis (SpA). The aim of this study is to evaluate the prevalence and risk factors for complications associated with uveitis in patients with JIA and SpA.</p><p><strong>Methods: </strong>A longitudinal, monocentric cohort study that included patients diagnosed with JIA and SpA who developed uveitis. Demographic, laboratory, and clinical data were collected including complications of uveitis, HLA-B27, antinuclear antibodies, erythrocyte sedimentation rate, C-reactive protein, visual acuity and DMARD treatment. Comparison between groups (complicated versus uncomplicated uveitis) was evaluated using chi-square, t test and Mann-Whitney U test. Logistic regression was performed to determine predictors of complications.</p><p><strong>Results: </strong>A total of 270 patients were evaluated, of which 37 patients (13.7%) had uveitis and were included in this study. Twenty patients were female (54.1%), aged 11.9±8.7 years at diagnosis of SpA/JIA and 15.3±9.9 years at diagnosis of uveitis. Twenty-seven patients (73.0%) had a diagnosis of JIA (23 with oligoarticular disease) and in 12 patients (32.4%) uveitis was the first manifestation. Fifteen (40.5%) patients exhibited complications during follow-up period. Eleven patients (29.7%) underwent ophthalmologic surgery. Complications were significantly higher in patients with JIA (51.9% vs 10.0% in SpA, p=0.03), as was the need for surgery (40.7% vs 0%, p=0.02). Complications in JIA were significantly more frequent in patients who had uveitis as the initial presentation (50.0% vs 7.7%, p=0.03); no significant differences were found between the groups in the other variables studied. Univariate logistic regression analysis showed that uveitis as the first manifestation of JIA (OR 12.0, confidence interval 95% 1.21-118.89, p=0.03) is a significant predictor of complications.</p><p><strong>Conclusion: </strong>We found higher rates of complications and need for ophthalmologic surgery in patients with JIA-associated uveitis. The initial presentation of JIA as uveitis is significantly associated with the occurrence of uveitis complications, so it is essential that there is a collaboration between ophthalmologist and rheumatologist in the diagnosis and treatment of these patients.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9350832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Filipe Oliveira Pinheiro, Pedro Madureira, Maria Seabra Rato, Lúcia Costa
{"title":"Tuberculous Osteomyelitis of The Pubic Symphysis - a Case Report of a Rare Entity Mimicking Spondyloarthritis.","authors":"Filipe Oliveira Pinheiro, Pedro Madureira, Maria Seabra Rato, Lúcia Costa","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Tuberculosis (TB) osteomyelitis of the pubic symphysis is an extremely rare diagnosis. Axial spondyloarthritis (SpA) is characterized by inflammatory back pain and enthesitis, and involvement of pubic symphysis is very unusual at presentation. A 36-year-old female patient with a history of inflammatory back and pubic pain was referred to Rheumatology. She had a pelvic magnetic resonance imaging (MRI) suggestive of osteitis pubis. She was started on etoricoxib 90mg/day as axial spondyloarthritis was suspected, with no improvement. Pelvic MRI was repeated and showed osteomyelitis of the iliopubic branches. An ultrasound-guided biopsy was performed, and culture was positive for Mycobacterium tuberculosis. Further imaging studies revealed small cavitations and several centrilobular micronodules with a tree-in-bud pattern in the upper lung lobes and in the upper segment of the lower left lobe. She was started on anti-tuberculous treatment for 1 year and had a good clinical and radiological response. TB osteomyelitis of the pubic symphysis is a rare entity and has seldom been reported. However, this is the first case, to our knowledge, where the clinical picture mimicked an itself unusual presentation of SpA.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9617281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ana Bento da Silva, Maria Helena Lourenço, Maria João Gonçalves, Jaime Cunha Branco, Manuela Costa, Ana Filipa Mourão
{"title":"Arthritis or maybe not? Pachydermodactyly: the great mimicker of juvenile idiopathic arthritis.","authors":"Ana Bento da Silva, Maria Helena Lourenço, Maria João Gonçalves, Jaime Cunha Branco, Manuela Costa, Ana Filipa Mourão","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Arthritis in the paediatric population is the hallmark of many rheumatic inflammatory diseases, as well as other cutaneous, infectious, or neoplastic conditions. It can be quite devastating, whereby prompt recognition and treatment of these disorders are essential. However, arthritis can sometimes be mistaken for other cutaneous or genetic conditions leading to misdiagnosis and overtreatment. Pachydermodactyly is a rare and benign form of digital fibromatosis, usually manifested by swelling of the proximal interphalangeal joints of both hands, mimicking arthritis. The authors report a case of a 12-year-old boy with a one-year history of painless swelling of the proximal interphalangeal joints of both hands that was referred to the Paediatric Rheumatology department due to the suspicion of juvenile idiopathic arthritis. The diagnostic work-up was unremarkable, and the patient remained asymptomatic over an 18-month follow-up period. A diagnosis of pachydermodactyly was assumed and no treatment was introduced, given the benign nature of the disorder and absence of symptoms. Therefore, it was possible to safely discharge the patient from the Paediatric Rheumatology clinic.</p>","PeriodicalId":29669,"journal":{"name":"ARP Rheumatology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9350393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}