CASE 43 History: A 31-year-old man presents with a 2-year history of intermittent numbness and burning in the left anterior thigh. 1. What should be included in the differential diagnosis? (Choose all that apply.) e. Schwannoma 2. What is the most common primary tumor involving the filum terminale? b. Dermoid c. Ependymoma d. Astrocytoma 3. Which of the following statements regarding myxopapillary ependymoma subtype is true? a. Overall it accounts for approximately 70% of ependymomas. b. It arises almost exclusively from the filum terminale. c. It rarely manifests with subarachnoid hemorrhage. d. Calcifications are less common in this subtype than in other subtypes. 4. Which of the following best describes the imaging characteristics of myxopapillary ependymoma?
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