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Muscle involvement in sarcoidosis

N Stjernberg, S Cajander, H Truedsson

    Acta Medica Scandinavica
    |January 1, 1981
    PubMed
    Summary

    Muscle involvement in sarcoidosis is common, often asymptomatic. Muscle biopsy, especially with serial sectioning, is crucial for diagnosing sarcoidosis, particularly in acute cases with erythema nodosum.

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    Clinical and experimental rheumatology·2003

    Area of Science:

    • Pulmonary Medicine
    • Rheumatology
    • Neurology

    Background:

    • Sarcoidosis is a multisystem inflammatory disease.
    • Muscle involvement in sarcoidosis is frequently asymptomatic.
    • Diagnosis can be challenging due to subtle clinical presentation.

    Purpose of the Study:

    • To evaluate the diagnostic utility of muscle biopsy in sarcoidosis.
    • To determine the incidence and characteristics of muscle involvement.
    • To assess the role of muscle biopsy when other diagnostic methods fail.

    Main Methods:

    • Retrospective analysis of 22 patients with sarcoidosis.
    • Detailed examination of muscle biopsy specimens.
    • Serial sectioning of muscle biopsies to increase diagnostic yield.
    • Correlation of muscle involvement with clinical presentation and other organ involvement.

    Main Results:

    • 50% of patients showed epithelioid cell granulomas in muscle biopsies.
    • Serial sectioning improved the detection rate of granulomas.
    • Muscle involvement was more prevalent in acute sarcoidosis with erythema nodosum.
    • Muscle biopsy provided definitive diagnosis in two patients with negative results from other biopsies.
    • Other organ involvement was common in patients with muscle sarcoidosis.

    Conclusions:

    • Muscle biopsy is a valuable diagnostic tool for sarcoidosis, even with minimal symptoms.
    • Serial sectioning of muscle biopsies enhances diagnostic accuracy.
    • Muscle biopsy can be essential when other diagnostic procedures are inconclusive.
    • Early recognition of muscle involvement aids in comprehensive sarcoidosis management.

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