Bilateral internal ophthalmoplegia as a feature of oculomotor fascicular syndrome disclosed by magnetic resonance imaging.
OBJECTIVE
To describe the magnetic resonance imaging features of bilateral internal ophthalmoplegia as an oculomotor fascicular syndrome.


METHODS
A 55-year-old man was initially examined with bilateral photophobia. Neuro-ophthalmologic examinations disclosed preganglionic bilateral internal ophthalmoplegia. Magnetic resonance imaging of the brainstem was performed.


RESULTS
Magnetic resonance imaging disclosed high-intensity areas on T2-weighted images along medial portions of the bilateral oculomotor fascicles in the mesencephalon.


CONCLUSIONS
These findings suggest that mesencephalic lesions may selectively cause bilateral internal ophthalmoplegia as a partial oculomotor fascicular syndrome.
Hashimoto
M
M
Department of Ophthalmology, Sapporo Medical University, School of Medicine, Japan.
Ohtsuka
K
K
D001933:Brain Stem / Q000098:blood supply* / Q000473:pathology; D002544:Cerebral Infarction / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008636:Mesencephalon / Q000473:pathology*; D008875:Middle Aged; D015840:Oculomotor Nerve Diseases / Q000175:diagnosis*; D009886:Ophthalmoplegia / Q000175:diagnosis*; D013577:Syndrome