Endoscopic view of sphenoid sinusitis adjacent to an intracranial aneurysm

      A 53-year-old woman presented with recurrent headaches, particularly at the base of the occiput. Clinical examination revealed clear nasal passages. Computed tomography (CT) of the sinuses revealed sphenoid sinusitis with secretions and trapped air (figure, A), which had persisted despite 2 months of medical treatment. It was of note that the patient’s history included an intracranial aneurysm that had been surgically clipped posterolateral to the right sphenoid sinus.