Medial medullary syndrome (Dejerines syndrome)

What is the medial medullary syndrome (Dejerines syndrome)? 

Medial medullary syndrome is caused by occlusion of the anterior spinal artery or its parent vertebral artery, resulting in the following signs:

  • Ipsilateral paresis of the tongue (damage to cranial nerve XII), which deviates toward the lesion
  • Contralateral hemiplegia (damage to corticospinal tract) with sparing of the face
  • Contralateral loss of position and vibratory sensation (damage to medial lemniscus)
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