ワレンベルグ症しょう候こう群ぐんMeanings1nounWallenberg syndrome; lateral medullary syndromemedicine›Medical term for a brainstem stroke syndrome caused by occlusion of the posterior inferior cerebellar artery or vertebral artery.ワレンベルグ症しょう候こう群ぐんは延えん髄ずい外がい側そくの梗こう塞そくによって起おこる。Wallenberg syndrome is caused by an infarction in the lateral medulla.