SÍNDROME DE WALLEMBERG Lateral medullary syndrome
Apresentação do caso: Masculino, 50 anos, quadro de dormência na hemiface D, fala ebrediosa, hipoestesia térmica em MSE.
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Sequência Axial T2 - hiperssinal em região postero-lateral à D |
Sequência DWI mostrando a pequena alteração em região posterolátero bulbar |
Lateral medullary syndrome, (or Wallenberg syndrome) is an acute ischemic infarct due to occlusion of the vessels supplying the lateral medulla oblongata; most commonly occlusion of intracranial portion of the vertebral artery followed by PICA and its branches.
This syndrome is characterised by:
- vestibulocerebellar symptoms: vertigo, falling towards the side of lesion, diplopia, and multidirectional nystagmus (inferior cerebellar peduncle and vestibular nucleus)
- autonomic dysfunction: ipsilateral Horner's syndrome, hiccups
- sensory symptoms: initially abnormal stabbing pain over the ipsilateral face then loss of pain and temperature sensation over the contralateral side of body (spinal trigeminal nucleus involvement)
- ipsilateral bulbar muscle weakness: hoarseness, dysphonia, dysphagia, and dysarthria, decreased gag reflex (nucleus ambiguus).
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