CASE 124 History: A 57-year-old woman presents with difficulty walking and bilateral upper extremity weakness for the past several weeks. 1. What should be included in the differential diagnosis? (Choose all that apply.) c. Spinal dural arteriovenous fistula d. Subacute combined degeneration (SCD) 2. Which of the following conditions is not associated with vitamin B12 deficiency? a. AIDS b. Alcoholism 3. What commonly used anesthetic agent has been implicated in vitamin B12 deficiency? a. Propofol b. Amobarbital d. Ketamine 4. Which imaging finding is least likely to be seen with SCD? a. High signal intensity on T2-weighted images in the posterior columns
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