Neuroanatomy USMLE Step 1 Practice Question
A 72-year-old man presents with sudden onset vertigo, nausea, and nystagmus. On examination, he has weakness of the right facial muscles, loss of pain and temperature sensation over the left side of his body, and normal motor strength in his limbs. Which of the following brainstem lesions best explains his clinical findings?
Answer choices
- ARight midbrain
- BLeft middle pons
- CRight lateral medullaCorrect answer
- DLeft medial medulla
- ERight medial medulla
- FLeft lateral medulla
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