Polymyositis: does it really exist as a distinct clinical subset?
Curr Opin Rheumatol
; 33(6): 537-543, 2021 11 01.
Article
en En
| MEDLINE
| ID: mdl-34494607
ABSTRACT
PURPOSE OF REVIEW To summarize information on polymyositis; diagnosis, definitions, published data and opinions. RECENT FINDINGS:
Polymyositis originally referred to inflammatory muscle diseases presenting with muscle weakness and inflammatory cell infiltrates on muscle tissue visible by microscopy. Over time and with improved technology to immunophenotype infiltrating inflammatory cells and characterize muscle fibres, the meaning of polymyositis changed and became more specific. There is ongoing controversy over the term polymyositis, with proponents for a strict definition based on histopathological and immunohistochemical features on muscle biopsies whereas others advocate for a broader clinical and histopathological phenotype. Over the past decades, the discovery of several myositis-specific autoantibodies together with distinct histopathological features have enabled the identification of new subsets previously labelled as polymyositis notably the antisynthetase syndrome and the immune-mediated necrotizing myopathies thus reducing the number of patients classified as polymyositis.SUMMARY:
There are still a small number of patients among the idiopathic inflammatory myopathies that can be classified as polymyositis as discussed in this review but the entity is now considered relatively rare.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Enfermedades Autoinmunes
/
Polimiositis
/
Miositis
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Curr Opin Rheumatol
Asunto de la revista:
REUMATOLOGIA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Suecia