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ID 57929
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Author
Matsuo, Toshihiko Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University ORCID Kaken ID publons researchmap
Abstract
Purpose:
Idiopathic orbital myositis, a rare disease of unknown cause, presents a diagnostic puzzle because the diagnosis is based on the exclusion of other diseases. This study aims at elucidating its long-term outcome to answer a clinical question whether idiopathic orbital myositis would be a distinct clinical entity.
Methods:
Retrospective review was made on 7 consecutive patients (6 men and 1 woman) with the age at the initial visit ranging from 33 to 69 years (mean, 45.8 years) who were diagnosed with idiopathic orbital myositis and followed for 5 years or more (mean, 9.2 years) at a referral-based hospital.
Results:
Chief complaint at the initial visit was diplopia in 4 patients, blurred vision in 2 patients, and proptosis in 1 patient. On magnetic resonance imaging, 4 patients showed enlargement of a single extraocular muscle on unilateral side while 3 patients showed enlargement of multiple extraocular muscles on unilateral side or bilateral sides. No patient developed systemic diseases or other orbital lesions in the long-term follow-up. All patients at the last visit were free from symptoms, including diplopia, after tapering of prednisolone at the initial dose of 20 to 60 mg daily.
Conclusion:
Idiopathic orbital myositis had a favorable long-term outcome with corticosteroid administration and appears to be a distinct clinical entity without systemic involvement.
Keywords
Orbital myositis
extraocular muscle
magnetic resonance imaging
diplopia
immunoglobulin G4
Published Date
2019-08-12
Publication Title
Japanese Clinical Medicine
Volume
volume10
Start Page
1
End Page
5
Content Type
Journal Article
language
English
OAI-PMH Set
岡山大学
Copyright Holders
© The Author(s) 2019
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DOI
Related Url
isVersionOf https://doi.org/10.1177/1179670719866525
License
https://creativecommons.org/licenses/by-nc/4.0/