This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy 3, Subject name: Anatomy
[{'content': 'Neurologic examination reveals an extensor plantar reflex and hyperreflexia on the left side, a loss of pain and temperature sensation on the right side, ptosis and miosis on the left side. A lesion that causes this constellation of deficits would most likely be found in the: \nSelect and explain. \nA. Cervical spinal cord, B. Crus cerebri, right side, C. Lumbar spinal cord., D. Paracentral lobule, left side.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Above symptoms point towards Brown-Sequard syndrome: hemisection of the cervical spinal cord- result in I/L Horner syndrome, I/L spastic paresis and C/L loss of pain and temperature sensation. Horner syndrome -always manifested on the ipsilateral side. Paracentral lobule control higher centres of micturation.', 'role': 'assistant'}]