Weber syndrome

Japanese: ウェーバー症候群 - うぇーばーしょうこうぐん

…In particular, in cases of brainstem damage, the pyramidal tract that controls the motor functions of the opposite side and the cranial nerves distributed to the same side are simultaneously damaged, resulting in a unique symptom called alternating hemiplegia, which shows cranial nerve paralysis on the opposite side to the side of hemiplegia. Among these, Weber's syndrome (alternating upper hemiplegia, eye movement disorder on the affected side and hemiparesis on the opposite side) and Millard-Gubler's syndrome (alternating lower hemiplegia, facial nerve paralysis on the affected side and upper and lower limb paralysis on the opposite side) are well-known. In addition, damage to the lateral part of the medulla oblongata causes a variety of symptoms called Wallenberg's syndrome. …

From 【Hemiplegia】

…In such cases, the patient will experience cranial nerve paralysis on the same side as the lesion and hemiplegia on the opposite side, which is called alternating hemiplegia. Representative examples include Weber's syndrome (oculomotor nerve paralysis on the affected side and hemiplegia including the opposite face) caused by midbrain lesions, and Millard-Gubler's syndrome (facial nerve paralysis on the affected side and hemiplegia not including the opposite face) caused by lesions in the lower pons. These are often caused by infarction or tumors in the brainstem. …

*Some of the terminology that refers to "Weber syndrome" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…とくに脳幹部の障害では反対側の運動機能を支配する錐体路と同側へ分布する脳神経とが同時に障害されるため，片麻痺のある側と反対側に脳神経麻痺を示す交代性片麻痺という特異な症状を呈することがある。なかでもウェーバー症候群Weber’s syndrome(上交代性片麻痺，病変側の眼球運動障害と反対側の半身麻痺)やミヤール=ギュブレル症候群Millard‐Gubler’s syndrome(下交代性片麻痺，病変側の顔面神経麻痺と反対側の上下肢麻痺)は有名である。また，延髄外側部の障害ではワレンベルグ症候群Wallenberg’s syndromeといわれる多彩な症状を呈する。…

【片麻痺】より

…このような場合は病変と同側の脳神経麻痺と反対側の片麻痺を示し，交代性片麻痺といわれる。代表的なものとして，中脳の病変によるウェーバー症候群Weber’s syndrome(病変側の動眼神経麻痺と反対側の顔面を含む半身麻痺)や橋下部の病変によるミヤール=ギュブレル症候群Millard‐Gubler’s syndrome(病変側の顔面神経麻痺と反対側の顔面を含まない半身麻痺)がある。これらは脳幹部の梗塞や腫瘍によるものが多い。…

※「ウェーバー症候群」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典第２版について | 情報

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