J Korean Neurol Assoc.  1996 Mar;14(1):310-314.

A Case of Pupil-Sparing Oculomotor Nerve Palsy due to Midbrain Infarction in Diabetic Patient

• Yang KI
• Park CT
• Park HK
• Shin HK
• Sung KB

Abstract

BACKGROUND: In general, vasculopathic oculomotor nerve palsy with pupil-sparing implied a lesion in the subarachnoid space or the cavernous sinus; however, it has been reported that similar findings can be produced by fascicular lesion. CASE: A 48-year-old woman with diabetes mellitus complained of diplopia and right ptosis. Examination revealed a complete oculomotor nerve palsy of the right eye with sparing of the pupil. The MRI revealed a infarction in the fascicular portion of the oculomotor nerve.
CONCLUSION
It is emphasized that the intraaxial lesion should be ruled out using the sophisticated study in patients with pupil-sparing vasculopathic oculomotor nerve palsy.

MeSH Terms

Cavernous Sinus
Diabetes Mellitus
Diplopia
Female
Humans
Infarction*
Magnetic Resonance Imaging
Mesencephalon*
Middle Aged
Oculomotor Nerve Diseases*
Oculomotor Nerve*
Pupil
Subarachnoid Space