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Case Reports

Isolated Unilateral Trochlear Nerve Palsy Due to Ipsilateral Dorsal Midbrain Infarction

, , , , &
Pages 146-148 | Received 02 Feb 2012, Accepted 09 Apr 2012, Published online: 30 Jul 2012
 

Abstract

A 67-year-old Japanese man with essential hypertension and diabetes mellitus abruptly developed isolated right-sided trochlear nerve palsy without pain. Four days later, cranial magnetic resonance imaging demonstrated a tiny ischaemic lesion in the caudal and dorsal midbrain on the right side, which might involve the trochlear fascicles after its decussation. The trochlear nerve palsy resolved within 4 days while treated with intravenous anti-platelet agent. This is a first reported case of isolated unilateral trochlear nerve palsy due to ipsilateral midbrain infarction.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.

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