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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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Idiopathic orbital myositis.

Jianhua Yan1, Peipei Wu

  • 1From the State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, People's Republic of China.

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Orbital myositis, a form of idiopathic orbital inflammation, presents varied symptoms and often recurs. Systemic corticosteroids are effective treatments, though imaging aids diagnosis.

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Area of Science:

  • Ophthalmology
  • Rheumatology
  • Inflammatory Diseases

Background:

  • Limited data exists on orbital myositis (OM), a condition involving idiopathic orbital inflammation.
  • Clinical features and therapeutic outcomes of OM require further investigation.

Purpose of the Study:

  • To collate data on clinical features, imaging, diagnosis, and therapeutic effects of OM.
  • To analyze case reports from a tertiary eye hospital in China.

Main Methods:

  • Retrospective study of 44 Chinese patients with orbital myositis.
  • Data collected from January 1, 2000, to August 31, 2010.
  • Analysis of medical records from the Zhongshan Ophthalmic Center.

Main Results:

  • 44 patients (25 female, 19 male; mean age 39.1 years) diagnosed with orbital myositis.
  • Most common dysfunction was pure restrictive (45.5%); superior rectus was the most affected muscle (29.1%).
  • Systemic corticosteroids led to full recovery in 38.6% and partial recovery in 59.1%, with 81.8% experiencing recurrences.

Conclusions:

  • Orbital myositis exhibits diverse clinical manifestations and a tendency for recurrence.
  • Imaging plays a crucial role in diagnosing orbital myositis.
  • Systemic corticosteroids are an effective treatment for orbital myositis.