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Formation of a large fusiform aneurysm next to a medullary infarction due to posterior inferior cerebellar artery dissection
We report a 48-year-old male with Wallenberg syndrome due to PICA dissection, which was difficult to diagnose on first admission. He reported sudden-onset sensory disturbance on the right side of his face, ataxic gait, and headache. Brain magnetic resonance imaging (MRI) revealed a fresh cerebral infarct in the right lateral medulla oblongata. Serial MRI and magnetic resonance angiography (MRA) performed at the time of his admission failed to demonstrate cerebral vessel abnormalities. MRI study performed 18 months after the attack revealed a fusiform aneurysm on the lateral medullary segment of the PICA; its site was extre...
Source: Journal of Nippon Medical School - February 23, 2023 Category: Universities & Medical Training Authors: Masahiro Yamaguchi Kyongsong Kim Takayuki Mizunari Katsuya Umeoka Kenta Koketsu Koshiro Isayama Akio Morita Source Type: research

Mild Encephalitis/Encephalopathy with a Reversible Splenial Lesion in an Adult with Cerebellar Ataxia: A Case Report.
Abstract Mild encephalitis/encephalopathy with a reversible splenial lesion (MERS) is a clinicoradiological syndrome characterized by transient mild encephalopathy and magnetic resonance imaging (MRI) findings of a reversible lesion in the splenium of the corpus callosum (SCC). Patients with MERS generally present with central nervous system symptoms such as consciousness disturbance, headache, and seizure; adult-onset MERS with cerebellar ataxia is rare. A 53-year-old man was admitted to our hospital with fever of 1 week's duration, headache, neck stiffness, and gait disturbance. Neurological examination revealed...
Source: Journal of Nippon Medical School - July 15, 2020 Category: Universities & Medical Training Authors: Nakajima M, Suda S, Kimura K Tags: J Nippon Med Sch Source Type: research