Abstract:BackgroundDistinguishing multiple system atrophy from other parkinsonian syndromes is challenging.ObjectivesTo evaluate vagus nerve ultrasonography for differentiating parkinsonian syndromes.MethodsA single‐center, cross‐sectional, observational study assessed 85 consecutive adult patients with de novo parkinsonism between June 2020 and December 2022, using 12 MHz ultrasonography of the vagus nerve cross‐sectional area.ResultsBilateral vagus nerves were smaller in multiple system atrophy than in other parkinso… Show more
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