We report a case of a 22-year-old male with a history of intravenous drug use presenting with cavernous sinus syndrome secondary to cavernous thrombophlebitis. The source of the thrombophlebitis was from a mycotic aneurysm in the setting of fungal endocarditis. With antifungal therapy and aortic valve replacement, the patient had full resolution of cranial nerve deficits. Descriptions of mycotic aneurysms of the cavernous portion of the internal carotid artery are limited to case reports and case series. Most have been nonendocarditic in etiology with poor prognosis. We present a unique case with endocarditic etiology and an excellent prognosis.
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