This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CNS, Subject name: Medicine
[{'content': 'A patient was treated for mantle cell Hodgkin lymphoma with radiation therapy. After 6 months he develops an electric shock-like pain along the spine on flexing his neck. What is the diagnosis? \nSelect and explain. \nA. Cervical ahritis, B. Cervical spinal cord pathology, C. Multiple sclerosis, D. Spinal cord compression', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Disease Features Cervical Ahritis Presents with stiffness in neck muscles and reduced neck movements Lhermite Sign -Seen in cervical spinal cord pathology -When neck flexion produces an unpleasant electric shock sensation radiating down the extremities Uthoff Sign -Multiple sclerosis -Worsening of symptoms like fatigue, optic neuritis with an increase in body temperature. Spinal cord compression Presents with deficits like paraplegia, bladder and bowel involvement', 'role': 'assistant'}]