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Percheron Artery-Plus Syndrome: A Syndrome Beyond Stroke Chameleon
J Nippon Med Sch. 2021;88(4):375-379. doi: 10.1272/jnms.JNMS.2021_88-414.ABSTRACTThe artery of Percheron (AOP) is an anatomical variant of the thalamoperforating arteries. AOP occlusion can cause bilateral paramedian thalamic infarctions and is referred to as a "stroke chameleon" because it lacks the classic signs of stroke. Coexistence of AOP occlusion and other neurologic disease is rare and can cause disturbance of consciousness. A 78-year-old woman had acute onset of left limb weakness and drowsy consciousness. Brain magnetic resonance angiography (MRA) revealed acute bilateral paramedian thalamic infarctions. However,...
Source: Journal of Nippon Medical School - September 2, 2021 Category: Universities & Medical Training Authors: Fu-Yi Yang Jeng-Luen Hung Shinn-Kuang Lin Source Type: research

Unilateral isolated trochlear nerve palsy due to ipsilateral midbrain infarction
J Nippon Med Sch. 2021 Jan 16. doi: 10.1272/jnms.JNMS.2021_88-515. Online ahead of print.ABSTRACTIschemic stroke is a very rare etiology in cases of isolated trochlear nerve palsy, and no reports of ipsilateral trochlear nerve palsy caused by unilateral stroke have so far been published. However, we now report a case of isolated trochlear nerve palsy due to ipsilateral dorsal small midbrain infarction in a 70-year-old woman who presented with acute onset of diplopia. There were no other clinical manifestations, but brain magnetic resonance imaging revealed a small ischemic lesion in the right dorsal midbrain, showing that ...
Source: Journal of Nippon Medical School - January 18, 2021 Category: Universities & Medical Training Authors: Toshiyuki Hayashi Koichi Nomura Yasuhiro Nishiyama Kazumi Kimura Source Type: research

Unilateral isolated trochlear nerve palsy due to ipsilateral midbrain infarction.
Abstract Ischemic stroke is a very rare etiology in cases of isolated trochlear nerve palsy, and no reports of ipsilateral trochlear nerve palsy caused by unilateral stroke have so far been published. However, we now report a case of isolated trochlear nerve palsy due to ipsilateral dorsal small midbrain infarction in a 70-year-old woman who presented with acute onset of diplopia. There were no other clinical manifestations, but brain magnetic resonance imaging revealed a small ischemic lesion in the right dorsal midbrain, showing that isolated trochlear nerve palsy can be caused by stroke. PMID: 33455977 [Pu...
Source: Journal of Nippon Medical School - January 16, 2021 Category: Universities & Medical Training Authors: Hayashi T, Nomura K, Nishiyama Y, Kimura K Tags: J Nippon Med Sch Source Type: research

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