MR features of pachymeningitis presenting with sixth-nerve palsy secondary to sphenoid sinusitis.

Pachymeningitis manifested by localized enhancing dural thickening adjacent to the clivus on MR images of two patients with sphenoid sinusitis and sixth-nerve palsy is presented. This is an unusual complication of sphenoid sinusitis. Prompt diagnosis and therapy may avoid significant intracranial complications.