Granulomatosis-associated myositis: High prevalence of sporadic inclusion body myositis.
Neurology
; 94(9): e910-e920, 2020 03 03.
Article
em En
| MEDLINE
| ID: mdl-31882529
ABSTRACT
OBJECTIVE:
To refine the predictive significance of muscle granuloma in patients with myositis.METHODS:
A group of 23 patients with myositis and granuloma on muscle biopsy (granuloma-myositis) from 8 French and Belgian centers was analyzed and compared with (1) a group of 23 patients with myositis without identified granuloma (control-myositis) randomly sampled in each center and (2) a group of 20 patients with sporadic inclusion body myositis (sIBM) without identified granuloma (control-sIBM).RESULTS:
All but 2 patients with granuloma-myositis had extramuscular involvement, including signs common in sarcoidosis that were systematically absent in the control-myositis and the control-sIBM groups. Almost half of patients with granuloma-myositis matched the diagnostic criteria for sIBM. In these patients, other than the granuloma, the characteristics of the myopathy and its nonresponse to treatment were similar to the control-sIBM patients. Aside from 1 patient with myositis overlapping with systemic sclerosis, the remaining patients with granuloma-myositis did not match the criteria for a well-defined myositis subtype, suggesting pure sarcoidosis. Matching criteria for sIBM was the sole feature independently associated with nonresponse to myopathy treatment in patients with granuloma-myositis.CONCLUSION:
Patients with granuloma-myositis should be carefully screened for sIBM associated with sarcoidosis in order to best tailor their care.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Sarcoidose
/
Músculo Esquelético
/
Miosite de Corpos de Inclusão
/
Granuloma
/
Miosite
País/Região como assunto:
Europa
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article