An 87-year-old male complaining of horizontal diplopia of 5 months' duration was found to have bilateral abducens nerve palsies. The remainder of the neurologic examination was unremarkable, but neuroradiologic investigation disclosed a lesion involving the sella and sphenoid sinus, with erosion of the upper aspect of the clivus. A large chordoma was found at trans-sphenoidal surgery. This presentation is unique in that the chordoma produced bilateral 6th-nerve palsies with no other neurologic defects.
