Pyomyositis of extraocular muscle: Case series and review of the literature

Acharya, Ishan; Jethani, Jitendra

doi:10.4103/0301-4738.71712

Cited by 9 publications

(4 citation statements)

References 3 publications

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“…The culture grew Staphylococcus in both of them. Acharya and Jethani[ 4 ] reported four cases of isolated EOM pyomyositis. CT scan of all patients showed a typical hypo-dense rim-enhancing lesion of the muscle involved.…”

Section: Discussionmentioning

confidence: 99%

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Isolated abscess in superior rectus muscle in a child

Bhalerao¹,

Singh²,

Yadav³

et al. 2015

Indian J Ophthalmol

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Pyomyositis is a primary bacterial infection of striated muscles nearly always caused by Staphylococcus aureus. Development of the intramuscular abscess involving the extra-ocular muscles (EOMs) remains an extremely rare process. We herein present a case of isolated EOM pyomyositis involving superior rectus muscle in a 2-year male child who was referred with complaints of swelling in left eye (LE) and inability to open LE since last 1-month. Orbital computed tomography (CT) scan showed a well-defined, hypo-dense, peripheral rim-enhancing lesion in relation to left superior rectus muscle suggestive of left superior rectus abscess. The abscess was drained through skin approach. We concluded that pyomyositis of EOM should be considered in any patient presenting with acute onset of orbital inflammation and characteristic CT or magnetic resonance imaging features. Management consists of incision and drainage coupled with antibiotic therapy.

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Section: Discussionmentioning

confidence: 99%

“…To our knowledge, only seven cases of pyomyositis in the eye have been reported in the literature. [ 2 3 4 ]…”

mentioning

confidence: 99%

Isolated abscess in superior rectus muscle in a child

Bhalerao¹,

Singh²,

Yadav³

et al. 2015

Indian J Ophthalmol

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“…It presents unilaterally with involvement of any of the extraocular muscles. On CT, a round-oval hypodense lesion with rim enhancement is characteristically observed [ 164 – 166 ]. On T1-weighted imaging, a hypointense central lesion with rim enhancement can be seen, alongside oedema and enlargement of the affected muscle [ 166 – 168 ].…”

Section: Introductionmentioning

confidence: 99%

Extraocular muscle enlargement

Rana

Juniat

Patel

et al. 2022

Graefes Arch Clin Exp Ophthalmol

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Extraocular muscle enlargement can occur secondary to a range of orbital and systemic diseases. Although the most common cause of extraocular muscle enlargement is thyroid eye disease, a range of other inflammatory, infective, neoplastic, and vascular conditions can alter the size and shape of the extraocular muscles. Imaging with computed tomography and magnetic resonance imaging plays an essential role in the workup of these conditions. This article provides an image-rich review of the wide range of pathology that can cause enlargement of the extraocular muscles.

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“…The oblique muscles may be enlarged in a range of inflammatory, neoplastic, and infective conditions. These include orbital lymphoma; inflammatory conditions, such as thyroid eye disease (TED), myositis, Sarcoidosis, and IgG4-related ophthalmic disease; and infective conditions including pyomyositis and cysticercosis [ 1 , 4 , 6 , 7 , 9 , 11 , 12 , 17 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Normative measurements of the superior oblique and inferior oblique muscles by magnetic resonance imaging

et al. 2022

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Purpose Normative oblique muscle data may help to diagnose pathological enlargement of the oblique muscles. We aim to describe the normative values of the superior and inferior oblique muscles in an Australian cohort on T1-weighted MRI and fat suppressed contrast enhanced T1-weighted MRI. Methods A retrospective review of patients who underwent 3 T orbital MRI. The healthy orbits were used to conduct measurements in patients with a unilateral orbital lesion. The maximum diameters of the superior and inferior oblique muscles were measured on coronal planes. The diameter was measured perpendicular to the long axis of the muscles. Results The normal measurements (mean ± SD) on fat suppressed contrast enhanced T1-weighted MRI: superior oblique, 3.0 ± 0.5 mm and inferior oblique, 2.7 ± 0.5 mm. On T1-weighted MRI: superior oblique, 2.8 ± 0.5 mm and inferior oblique, 2.5 ± 0.4 mm. In patients who had both sequences performed, the superior and inferior oblique diameters were significantly higher on the fat suppressed contrast-enhanced T1-weighted MRI than the T1-weighted MRI sequence (p < 0.01). Conclusion Oblique muscle enlargement may be seen in a range of orbital diseases. These data may help in diagnosing oblique muscle enlargement. In addition, variations in the measured muscle diameters can be seen according to the scan sequence that is used.

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Pyomyositis of extraocular muscle: Case series and review of the literature

Cited by 9 publications

References 3 publications

Isolated abscess in superior rectus muscle in a child

Isolated abscess in superior rectus muscle in a child

Extraocular muscle enlargement

Normative measurements of the superior oblique and inferior oblique muscles by magnetic resonance imaging

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