Midbrain Infarction Causing Oculomotor Nerve Palsy and Ipsilateral Cerebellar Ataxia

Makoto Tokunaga; Kimiko Fukunaga; Ryoji Nakanishi; Susumu Watanabe; Hiroaki Yamanaga

doi:10.2169/internalmedicine.53.1613

CASE REPORTS

Midbrain Infarction Causing Oculomotor Nerve Palsy and Ipsilateral Cerebellar Ataxia

Makoto Tokunaga, Kimiko Fukunaga, Ryoji Nakanishi, Susumu Watanabe, Hiroaki Yamanaga

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Keywords: partial oculomotor nerve palsy, midbrain infarction, cerebellar ataxia, Claude's syndrome, tractography

JOURNAL OPEN ACCESS

2014 Volume 53 Issue 18 Pages 2143-2147

DOI https://doi.org/10.2169/internalmedicine.53.1613

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Abstract

We herein report the case of an 81-year-old woman with midbrain infarction causing pupil-sparing oculomotor nerve palsy with ipsilateral cerebellar ataxia. The lesion was located at the rostral end of the decussation of the superior cerebellar peduncle touching the dorsal side, further caudal and dorsal to causal lesions of Claude's syndrome, which presented as oculomotor palsy and contralateral cerebellar ataxia. This is the third report of midbrain infarction causing partial oculomotor nerve palsy with ipsilateral cerebellar ataxia. It may be possible to establish this entity as a new syndrome following the accumulation of more cases.

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