A 45-year-old woman presents with acute onset of loss of pain and temperature sensation over her right arm and shoulder with preserved motor strength. She concurrently reports loss of pain sensation on the left side of her face. Vital signs: BP 145/92, HR 88, RR 16, Temp 37.2°C, SpO2 98%. MRI brain shows acute infarction in the medulla. Proprioception remains intact. Which brainstem structure is most likely damaged?
- A)Right medial medulla
- B)Right lateral medullaGABARITO
- C)Right midbrain
- D)Right pontine tegmentum
- E)Left lateral medulla
Explicação
Wallenberg syndrome (lateral medullary syndrome) classically presents with crossed dissociative sensory loss: ipsilateral loss of facial pain/temperature (trigeminal nucleus) and contralateral loss of body pain/temperature (spinothalamic tract). This describes... Ver explicação completa e trilha adaptativa →