Presentation
Bilateral proptosis and diplopia.
Patient Data
Age: 45 years
Gender: Male
From the case:
Thyroid associated orbitopathy
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There are bilateral symmetrical swelling and enlargement of extraocular muscle bellies, (both inferior and medial rectus muscles and to lesser degree superior rectus complex), sparing tendons.
They appear isointense in t1_vibe and hyperintense on T2W images and shows homogenous enhancement in t1_vibe post-contrast.
They cause regional mass effect, splaying optic nerve on the left side.
Case Discussion
Bilateral symmetrical enlargement of extraocular muscle bellies, sparing tendons, giving the appearance of coca-cola bottle sign, suggestive thyroid-associated orbitopathy.
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