Abstract

Objective

Sarcoidosis is a chronic inflammatory disease that affects many organs and systems, especially the lungs, lymph nodes and musculoskeletal system. Musculoskeletal system involvement patterns in sarcoidosis are not well defined and literature data are limited in terms of clinical features. This study aimed to investigate the clinical and demographic characteristics of sarcoidosis patients with musculoskeletal system involvement.

Methods

One hundred and four patients with sarcoidosis who were followed up in our clinic between June 2020 and January 2024 were evaluated retrospectively. Forty-four sarcoidosis patients aged >18 years with objectively detected musculoskeletal system involvement were included in the study. The musculoskeletal system involvement patterns, clinical and laboratory findings, and demographic characteristics of the patients were analyzed.

Results

Musculoskeletal involvement was found in 44 of the 104 sarcoidosis patients (42%). Of the 44 patients with musculoskeletal involvement, 37 (77.3%) were female, the mean age was 46.9±12.2 years, and the mean follow-up time was 14±11.8 months. The most common objective musculoskeletal pathology was chronic arthritis (17%), mostly in the form of chronic oligoarthritis. Wrist (50% vs. 3.8%, p=0.001) and metacarpophalangeal joint involvement (38.9% vs. 0, p=0.001) were significantly higher in patients with chronic arthritis than in patients with acute arthritis. While joint involvement starting as monoarthritis was an independent negative predictor for the development of chronic arthritis [odds ratio (OR): 0.046, 95% confidence interval (CI): 0.003-0.815, p=0.036], the presence of obesity at baseline was a positive predictor for the development of chronic arthritis (OR: 11.968, 95% CI: 1.069-133.960, p=0.044).

Conclusion

Sarcoidosis can present with a wide range of musculoskeletal manifestations. The most common musculoskeletal pathologies in sarcoidosis are acute and chronic arthritis. Sarcoidosis patients presenting with monoarthritis do not usually develop chronic arthritis. Patients with chronic sarcoid arthritis initially present more hand-joint involvement. Obesity is a risk factor for the development of chronic arthritis.

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Musculoskeletal involvement in sarcoidosis: A single center experience

Abstract

References