Focal myositis: Sonographic findings

Laurent, Pierre-Eloi; Larribe, Maud; Guenoun, Daphné; Champsaur, Pierre; Corroller, Thomas Le

doi:10.1002/mus.24649

Cited by 4 publications

(1 citation statement)

References 12 publications

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“…L'utilisation d'autres techniques d'imagerie au cours des myosites focales est plus anecdotique et, de fait, leur place dans le diagnostic reste à démontrer. L'échographie musculaire au cours de la myosite focale n'a quasiment jamais été rapportée [18]. Le PETscanner, dans les rares cas où il a été réalisé, a permis de montrer un hypermétabolisme au niveau de la lésion [19,20].…”

Section: Les Données Morphologiquesunclassified

Myosite focale : une maladie méconnue

Gallay

Streichenberger

Benveniste

et al. 2017

La Revue de Médecine Interne

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Focal myositis are inflammatory muscle diseases of unknown origin. At the opposite from the other idiopathic inflammatory myopathies, they are restricted to a single muscle or to a muscle group. They are not associated with extramuscular manifestations, and they have a good prognosis without any treatment. They are characterized by a localized swelling affecting mostly lower limbs. The pseudo-tumor can be painful, but is not associated with a muscle weakness. Creatine kinase level is normal. Muscle MRI shows an inflammation restricted to a muscle or a muscle group. Muscle biopsy and pathological analysis remain necessary for the diagnosis, showing inflammatory infiltrates composed by macrophages and lymphocytes without any specific distribution within the muscle. Focal overexpression of HLA-1 by the muscle fibers is frequently observed. The muscle biopsy permits to rule out differential diagnosis such a malignancy (sarcoma). Spontaneous remission occurs within weeks or months after the first symptoms, relapse is unusual.

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Section: Les Données Morphologiquesunclassified