Granulomatosis-associated myositis: High prevalence of sporadic inclusion body myositis.
Journal
Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060
Informations de publication
Date de publication:
03 03 2020
03 03 2020
Historique:
received:
08
11
2018
accepted:
30
08
2019
pubmed:
29
12
2019
medline:
15
7
2020
entrez:
29
12
2019
Statut:
ppublish
Résumé
To refine the predictive significance of muscle granuloma in patients with myositis. 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). 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. Patients with granuloma-myositis should be carefully screened for sIBM associated with sarcoidosis in order to best tailor their care.
Identifiants
pubmed: 31882529
pii: WNL.0000000000008863
doi: 10.1212/WNL.0000000000008863
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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Informations de copyright
© 2019 American Academy of Neurology.