Rapidly progressive visual impairment and internal carotid artery stenosis caused by sphenoid sinus mucocele: illustrative case.

Key Points

• To demonstrate the connection between sphenoid sinus mucocele and the rapid progression of neurological deficits including ICA stenosis.
• Case report detailing diagnosis and treatment of sphenoid sinus mucocele.
• Utilized imaging techniques to assess the condition of ICA.
• Performed surgical intervention through simple cyst fenestration.
• Timely intervention led to complete neurological recovery.
• Surgical procedure prevented severe progression of internal carotid artery stenosis.