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Background: Juvenile idiopathic arthritis (JIA) is a common chronic rheumatic disease in children, requiring careful management to reduce both short- and long-term morbidity. In this study, our objective was to assess the clinical features of patients diagnosed with JIA who received intra-articular corticosteroid injections (IACI). Methods: In this retrospective study, we evaluated the clinical and laboratory characteristics of 225 JIA patients monitored from January 2012 to October 2023 at a tertiary care center. We focused on patients who underwent intra-articular corticosteroid injections (IACI) as part of their treatment. Triamcinolone hexacetonide (TH) was used due to its demonstrated safety and efficacy. Results: Our analysis revealed that IACI, particularly utilizing TH, was a widely employed and effective adjunct therapy, contributing to rapid symptom relief and local disease control. Patients receiving IACI exhibited earlier symptom onset, younger age at diagnosis, longer follow-up durations, and higher cumulative treatment burden (p < 0.001, p < 0.001, p < 0.01, p < 0.001 respectively). Despite inconclusive acute-phase reactants, a higher frequency of ANA positivity and elevated initial lymphocyte counts were associated with increased IACI use (p < 0.001, p < 0.001 respectively). Importantly, on a joint basis, a high percentage of arthritis remission following IACI underscores its efficacy and favorable safety profile. Conclusions: Notably, the high percentage of arthritis remission achieved with intra-articular corticosteroid injections (IACI) on a joint-specific basis highlights its efficacy and favorable safety profile. A lymphocyte count exceeding 5000/mm3 at the time of diagnosis may serve as an early indicator for considering intra-articular steroid administration. These findings emphasize the need for nuanced and individualized treatment strategies in JIA management to optimize outcomes for affected children. [ABSTRACT FROM AUTHOR]

The article discusses the similarities and differences between bone marrow edema syndrome (BMES) and chronic non-bacterial osteomyelitis (CNO), which can lead to misdiagnosis. BMES is a rare disease characterized by extremity pain and interstitial edema in the bone marrow, while CNO primarily affects children and adolescents and is an autoinflammatory bone disease. The article presents a case study of a pediatric patient with BMES who initially presented with foot pain and symmetrical bone marrow edema, which could have been misdiagnosed as CNO. The article emphasizes the importance of differentiating between these conditions for effective treatment planning. [Extracted from the article]

Objective: The exact effects of MEFV variants on inflammation are still under investigation, and reports on variants of unknown significance, particularly the E148Q variant, have been conflicting. Therefore, this study aims to investigate patients exhibiting E148Q heterozygosity, focusing on diagnoses and disease courses to assist physicians in interpreting the variant., Methods: Data of pediatric patients presenting to the Pediatric Rheumatology clinic between November 2016 and September 2023, exhibiting only E148Q heterozygosity in MEFV gene analysis, were extracted. Patients who were lost before 9 months of follow-up have been excluded to ensure the completion of initial diagnostic tests and evaluations., Results: Among the 119 patients with E148Q variant, the diagnoses were as follows: healthy, 51.3%; IgA vasculitis, 10.1%; Familial Mediterranean Fever (FMF), 7.6%; Periodic fever, Aphtous stomatitis, Pharyngitis, Adenitis (PFAPA), 6.7%; and other diagnoses, 19.3%. IgA vasculitis patients experienced articular, gastrointestinal, and renal involvement at rates of 91.7%, 58.3%, and 16.7%, respectively. Complete response, partial response, and no response to colchicine were 37.5%, 12.5%, and 50%, respectively, in PFAPA patients. All FMF patients responded to colchicine treatment resulting in reduced mean FMF episode counts in 6 months from 3.22 ± 0.92 to 0.56 ± 0.52., Conclusions: The E148Q variant may amplify inflammation and modify disease courses. Patients with the E148Q variant experiencing typical FMF episodes should receive colchicine, but clinicians should exercise caution regarding alternative diagnoses. Additionally, the E148Q variant may increase acute phase reactants and disease severity in IgA vasculitis. However, to reach definitive conclusions on its treatment-modifying role in PFAPA, universal diagnosis and treatment response criteria should be adopted., Competing Interests: Conflicts of interest: No financial or nonfinancial benefits have been received or will be received from any party related directly or indirectly to the subject of this article., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)