CASE 120 History: A 74-year-old woman who underwent T3-4 laminectomy for resection of an intradural meningioma 3 months earlier now presents with midscapular pain. 1. What should be included in the differential diagnosis? (Choose all that apply.) 2. All of the following imaging findings favor the diagnosis of acquired arachnoid cyst over congenital intradural arachnoid except: a. Location lateral to the spinal cord b. Location in the lumbar spine c. Evidence of prior spine surgery d. Presence of an intramedullary syrinx 3. Acquired arachnoid cyst may develop secondary to all of the following causes except: a. Trauma
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