We present a unique case of cavernous sinus thrombosis as a likely etiology of conjunctival lymphangiectasia, with resolution of symptoms with anticoagulation.  A 58-year-old male presented with 6-months of chemosis and conjunctival lymphangiectasia. Magnetic resonance imaging revealed a right cavernous sinus and superior ophthalmic vein filling defect, consistent with thrombosis. The patient received anticoagulation, with subsequent resolution of the conjunctival lymphangiectasia.  This case highlights the importance of imaging in patients who present with conjunctival lymphangiectasia to rule out possible life-threatening pathology. 

Conjunctival chemosis, Cavernous sinus thrombosis, Lymphangiectasia