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Sixth Nerve Palsy from Cholesterol Granuloma of the Petrous Apex.

  • Roemer S Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital Fondation Asile des aveugles , Lausanne , Switzerland.
  • Maeder P Department of Radiology, University of Lausanne, Lausanne University Hospital , Lausanne , Switzerland.
  • Daniel RT Department of Clinical Neurosciences, Section of Neurosurgery, University of Lausanne, Lausanne University Hospital , Lausanne , Switzerland.
  • Kawasaki A Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital Fondation Asile des aveugles , Lausanne , Switzerland.
  • 2017-03-07
Published in:
  • Frontiers in neurology. - 2017
abducens palsy
cholesterol granuloma
diplopia
esotropia
petrous apex tumor
sixth nerve palsy
skull-base tumor
English Herein, we report a patient who had an isolated sixth nerve palsy due to a petrous apex cholesterol granuloma. The sixth nerve palsy appeared acutely and then spontaneously resolved over several months, initially suggesting a microvascular origin of the palsy. Subsequent recurrences of the palsy indicated a different pathophysiologic etiology and MRI revealed the lesion at the petrous apex. Surgical resection improved the compressive effect of the lesion at Dorello's canal and clinical improvement was observed. A relapsing-remitting sixth nerve palsy is an unusual presentation of this rare lesion.
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  • English
Open access status
gold
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https://sonar.ch/global/documents/186254
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