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Osseous sarcoidosis is a rare manifestation of sarcoidosis, often mimicking other conditions like metastatic disease. Skeletal involvement occurs in only 3%-13% of cases (1), making diagnosis challenging. We present the case of a 63-year-old female with a 1-month history of inflammatory bone pain and multiple lytic and blastic lesions.A 63-year-old female presented with a 1-month history of inflammatory pain in the left hip and lumbar spine. Radiological studies, including magnetic resonance imaging (MRI) and computed tomography (CT), revealed multiple bone lesions throughout the lumbar spine, sacrum and iliac bones, raising suspicion of metastatic disease a bone biopsy confirmed a diagnosis of sarcoidosis.MRI and CT showed lytic and blastic lesions in the axial skeleton, with FDG-PET indicating diffuse uptake in the iliac bone and mediastinal adenopathy. Imaging was crucial in ruling out metastases and guiding the biopsy, which confirmed the diagnosis.Osseous sarcoidosis is a rare entity that poses a significant diagnostic challenge, often resembling metastatic disease. Imaging techniques such as MRI and CT, combined with biopsy, are effective, noninvasive methods for evaluation and diagnosis. The patient was treated with corticosteroids in high doses and systemic methotrexate, showing improvement in inflammatory pain and stabilization of the bone lesions.

Abstract Objectives To compare mortality rates between GCA patients and the general population in Spain, and to identify associated factors influencing mortality. Methods ARTESER, a multicenter registry by the Spanish Society of Rheumatology, includes GCA patients from June 2013 to March 2019. Demographic, clinical, imaging, histological and mortality data were collected retrospectively. Only patients with at least one year of follow-up were included for analysis. The mortality rates were expressed as the number of deaths per 1000 person-years, with 95% confidence interval (CI) by sex and age group. Kaplan-Meier method was performed for survival analysis. The factors influencing mortality were analyzed using Cox regression model. Results A total of 1200 patients with GCA were analyzed, with a mean (SD) follow-up of 2.18 (1.53) years. The overall five-year cumulative mortality rate (95%CI) was 37.86 (31.75-43.96) per 1000 patients/year. The cumulative mortality rate was significantly higher in males than females (59.04vs29.06; p

Abstract Objective To evaluate the main outcomes of disease activity and their association with other measures of activity, damage, and quality of life in patients with idiopathic inflammatory myopathy (IIM) according to time since diagnosis and positivity to antisynthetase autoantibodies (ASAs). Methods Cross-sectional multicenter study within the Spanish Myo-Spain registry. Cases were classified as incident (≤ 12 months since diagnosis) and prevalent. The main outcomes of disease activity were the Myositis Disease Activity Assessment visual analogue scale (MYOACT), the Manual Muscle Test 8 (MMT-8), physician global activity (PhGA), and extramuscular activity. Other measures of activity, damage, and quality of life included patient global disease activity, MYOACT muscular, creatine phosphokinase, Health Assessment Questionnaire, physician and patient global damage, global damage of the Myositis Damage Index, and the 12-item Short-Form Health Survey (SF-12). We analyzed associations using a multivariate generalized linear model and a simple linear regression model. Results A total of 554 patients with different diagnostic subgroups of IIM were included (136 incident and 418 prevalent cases), with 215 ASA-positive patients (58 incident and 157 prevalent cases). All measures of disease activity were higher in the incident cases (p

Objective: To determine the prevalence and predictive factors of cerebrovascular accidents (CVA) in giant cell arteritis (GCA)., Methods: ARTESER is a large Spanish multicentre registry including patients with GCA from across the entire country diagnosed between June 2013 and March 2019 and sponsored by the Spanish Society of Rheumatology. The variables collected at diagnosis were demographics, clinical manifestations (including the occurrence and location of CVA), laboratory, histology and imaging findings. Patients with and without CVA were compared in a bivariate analysis. Multivariate logistic regression was performed to determine potential predictive factors of CVA., Results: A total of 1540 patients with GCA were included for analysis (mean age 77.1 years, 70% females). CVA occurred in 61 (3.96%), of whom 38 (62.3%) involved the vertebrobasilar territory and 21 (34.4%) the carotid territory. The factors associated with CVA were the occurrence of transient ischaemic attack (TIA) (OR 8.63; 95% CI 2.877-25.86), large vessel (LV) involvement (OR 2.79; 95% CI 1.421- 5.465) and the presence of concomitant visual manifestations (OR 2.73; 95% CI 1.427-5.235). The risk of death during follow-up was significantly higher in patients with CVA (18% vs 8.8%; p= 0.014). Patients with CVA received significantly higher mean prednisone (mg) dose at diagnosis (433.9 vs 216; p< 0.001) and cumulative prednisone dose during follow-up (11 203.9 vs 8,194.1; p< 0.001)., Conclusion: The prevalence of CVA in patients with GCA is low, but increases the risk of mortality. The presence of TIA, LV involvement and visual manifestations are factors associated with increased risk of CVA., (© The Author(s) 2025. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)