2017 European League Against Rheumatism/American College of Rheumatology classification criteria for adult and juvenile idiopathic inflammatory myopathies and their major subgroups.

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Neurology · University of Minnesota

Muscle biopsy is generally recommended and useful in most cases of suspected inflammatory/immune myopathy; accurate pathologic diagnosis is imperative for prognostication, identification of comorbid conditions (e.g., cancer, interstitial lung disease, arthritis, etc.), and treatment decisions. Histo...