Known diabetic, hypertensive with recent onset unilateral eyelid swelling, mild proptosis and restriction of ocular movements
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Dirtying of right retrobulbar orbitat fat with involvement of the anterior attachments of superior and lateral recti and also surrounding a mildly enlarged lacrimal gland. The other extraocular muscles, optic nerve, orbital apex, ophthalmic artery are normal. Associated preseptal edema present.
Idiopathic inflammation of the orbit is commonly encountered with involvement of extra ocular muscles, distinguished from thyroid ophthalmopathy by the involvement of tendinous insertions of muscles which is typically spared in the latter.