3

• Medial midbrain syndrome (weber syndrome)


  • Paramedian branches of basilar
  • Contralateral motor impairment
  • Ipsilateral CN3 [down & out, dilated]
• Medial Pontine syndrome


  • Paramedian branches of basilar
  • Contralateral motor impairment
  • Contralateral proprio, vibration impairment
  • Ipsilateral CN6 [can't abduct]
• Lateral Pontine syndrome


  • AICA
  • Ipsilateral ataxia
  • Ipsilateral CN5,7 [facial numb & palsy]
• Medial medullary syndrome


  • Anterior spinal artery
  • Contralateral motor impairment
  • Contralateral proprio, vibration
  • Ipsilateral CN12 [Tongue to lesion side]
• Lateral medullary syndrome [Wallenberg syndrome]


  • PICA or Vertebral artery (of same side)
  • Ipsilateral ataxia
  • Ipsilateral facial numbness & pain
  • Ipsilateral Horner
  • Ipsilateral motor impairment
  • Contralateral pain & sensation impairment
  • N, V, hoarseness, dysarthria, vertigo, ↓ gag, hiccups
  • Palate deviate to contralateral (& uvula) CN9&10