Orbital Inflammation Prompted by Endovascular Mechanical Thrombectomy
A 47-year-old woman developed left eyelid drop, proptosis, ophthalmoplegia, and conjunctival injection (A) 6 days after endovascular mechanical thrombectomy of a left internal carotid artery occlusion. On examination, visual acuity was intact with no pupillary defect, whereas vascular studies demonstrated normal ophthalmic arterial flow (B), ruling out orbital infarction syndrome. C, Computed topography angiography excluded a carotid cavernous fistula, while magnetic resonance imaging demonstrated extraocular muscle enlargement and intraconal fat straining.