No abstract available.
Myositis* ; Orbital Myositis

No abstract available.
Blepharoptosis ; Myositis* ; Orbital Myositis ; Orbital Pseudotumor

No abstract available.
Muscles ; Orbit ; Orbital Myositis

No abstract available.
Diplopia* ; Orbit* ; Orbital Myositis*

No abstract available.
Orbit* ; Orbital Myositis*

PURPOSE: To perform and compare differential diagnosis of patients with thyroid-associated myopathy, idiopathic orbital myositis and normal controls based on orbital computed tomography. Orbital fat and extraocular muscle densities were quantified using Hounsfield Unit (HU) and their characteristics were compared and analyzed. METHODS: From February 2005 to January 2013, orbital computed tomography was performed on 90 eyes of 47 thyroid-associated myopathy patients, 18 eyes of 14 idiopathic orbital myositis patients and 280 eyes of 140 normal subjects. The average values of orbital fat and extraocular muscle densities were measured and compared using HU. The density differences between the patients with thyroid-associated myopathy and the normal group were analyzed by age, clinical activity score, ocular protrusion and disease duration. RESULTS: In the thyroid-associated myopathy group, orbital fat and extraocular muscle densities were -87.8 +/- 12.5 HU and 48.7 +/- 7.1 HU, respectively. In the idiopathic orbital myositis group, the orbital fat and extraocular muscle densities were 79.9 +/- 9.9 HU and 49.2 +/- 9.1 HU, respectively. There was a statistically significant lower result of orbital fat in the thyroid-associated myopathy group (p = 0.002), however, the extraocular muscle density did not show a statistically significant difference (p = 0.775). The orbital fat and extraocular muscle densities of the normal group were -79.0 +/- 11.2 HU and 54.3 +/- 6.3 HU, respectively. There were significantly lower results in both orbital fat and extraocular muscle densities in the thyroid-associated myopathy group than normal group (p = 0.000). In active cases and those accompanied by ocular protrusion, there was no significant difference in orbital fat density (p = 0.345 and p = 0.952, respectively), while extraocular muscle density significantly decreased (p = 0.007 and p = 0.003, respectively). CONCLUSIONS: A difference between the orbital fat and extraocular muscle densities in thyroid-associated myopathy and idiopathic orbital myositis could be quantitatively found using HU and orbital computed tomography.
Diagnosis, Differential ; Humans ; Muscles* ; Muscular Diseases* ; Orbit* ; Orbital Myositis*

No abstract available.
Herpes Zoster ; Herpes Zoster Ophthalmicus ; Orbit ; Orbital Myositis

Wegener's granulomatosis (WG) is a multisystemic granulomatous inflammatory disorder which is presumably caused by an autoimmune response. It typically targets the upper and lower respiratory tract and the kidney. Ocular involvement occurs in 50 to 60% of WG patients. However, orbital myositis and diplopia as a presenting symptom is a rare ocular manifestation. We present the case of a 49-year-old man who was admitted with bilateral diplopia due to orbital myositis under a diagnosis of WG. He was successfully treated with high dose corticosteroid therapy.
Autoimmunity ; Diplopia ; Humans ; Kidney ; Middle Aged ; Myositis ; Orbital Myositis ; Respiratory System ; Wegener Granulomatosis

Idiopathic orbital myositis, a subgroup of previously so called inflammatory orbital pseudotumor, occurred with acute onset periorbital pain, eyelid swelling, proptosis, and ophthalmoplegia. Currently many pathologist and ophthalmologist agreed the term pseudotumor or Tolosa-Hunt syndrome and They classified some cases as characterized histologic and computerized tomographic evidence of inflammation of extraocular muscles, good responsiveness to prednisone, remission and exacerbation, with recurrence, but generally benign condition. The possibility of idiopathic orbital myositis being an immune-mediated process has been discussed. Some believe many of such cases have been grouped under the term Tolosa-Hunt syndrome. It is onloy in the last decade that computerized tomographic scanning has allowed precise localization of the alterations to orbital and retro-orbital strcutures. The term idopathic orbital myositis is precise insofar as it indicates the structures primarily involved ocular muscles. We report a case of idiopathic orbital myositis withr review of literatures.
Exophthalmos ; Eyelids ; Inflammation ; Muscles ; Ophthalmoplegia ; Orbit* ; Orbital Myositis* ; Orbital Pseudotumor ; Prednisone ; Recurrence ; Tolosa-Hunt Syndrome

Idiopathic orbital myositis, a subgroup of inflammatory orbital pseudotumor may occur with acute-onset periorbital pain, diplopia, and, in most cases, eyelid swelling. Proptosis, extraocular muscle motility restrictions, and response to oral prednisolone administration were characteristic. Although the CT appearance of orbital myositis is often helpful, the findings are not pathognomonic: correlation with history, clinical finding, and therapeutic response must be considered in making the diagnosis. The results of corticosteroid therapy on the orbital pseudotumor caused by orbital myositis were as follows: 1. The effect of corticosteroid was more effective in single extraocular muscle involvement than in that of a multiple extraocular muscle. 2. Early age of onset and early treatment after symptom increased the effectiveness of corticosteroid therapy.
Age of Onset ; Diagnosis ; Diplopia ; Exophthalmos ; Eyelids ; Orbit* ; Orbital Myositis* ; Orbital Pseudotumor* ; Prednisolone