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Case Reports
. 2006 Oct;10(5):473-5.
doi: 10.1016/j.jaapos.2006.04.007. Epub 2006 Sep 7.

"V体育平台登录" Magnetic resonance imaging demonstrates neuropathology in congenital inferior division oculomotor palsy

Tzu-en J Wu  1 , Sherwin J Isenberg, Joseph L Demer
Affiliations
Case Reports

Magnetic resonance imaging demonstrates neuropathology in congenital inferior division oculomotor palsy

Tzu-en J Wu et al. J AAPOS. 2006 Oct.

Abstract

Isolated inferior division oculomotor nerve palsy (ONP) is rare VSports手机版. Acquired cases have been associated with neurologic or systemic disease. To our knowledge, congenital inferior division ONP is previously unreported. We present a case of congenital inferior division ONP in which magnetic resonance imaging demonstrated the structural neuropathy. .

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Figures

FIG 1
FIG 1
Ocular versions in congenital inferior division oculomotor palsy. In primary position there was 75Δ exotropia and 6Δ right hypertropia. The deviation was horizontally comitant, but diminished to 65Δ in upward gaze and increased to 95Δ in downward gaze. The right eye had marked limitation to adduction and infraduction. There was mild-to-moderate limitation to adduction and infraduction of the left eye.
FIG 2
FIG 2
High-resolution, T1-weighted magnetic resonance imaging (MRI) in 2 mm thickness quasi-coronal image planes perpendicular to the long axis of both orbits, arranged from posterior to anterior. Ordinarily the oculomotor nerve is easily evident in these views. The right oculomotor nerve is smaller, but the inferior division to the right medial and inferior rectus (IR) muscles cannot be visualized. There is deep atrophy of the IR and medial rectus (MR) muscles. The right optic nerve is smaller. There is superior heterotopia of lateral rectus (LR) pulley resulting in more incyclotorsion in the right eye (OD). n. III, oculomotor nerve; SR, superior rectus muscle; SO, superior oblique muscle; IO, IO muscle; ON, optic nerve.
FIG 3
FIG 3
High-resolution, heavily T2-weighted MRI in a 1 mm thickness plane paralleling the anterior optic pathway demonstrates no recognizable right oculomotor nerve exiting the midbrain, compared with the obvious oculomotor nerves in the normal midbrain image. The left oculomotor nerve was markedly hypoplastic.
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References

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