CASE 76 History: A 42-year-old woman with a history of sinonasal cancer is found to have a cord lesion on MRI of the cervical spine. 1. What should be included in the differential diagnosis? (Choose all that apply.) a. Intramedullary arteriovenous malformation c. Ependymoma d. Schwannoma e. Meningioma 2. Which of the following intramedullary lesions is least likely to be associated with hematomyelia? a. Ependymoma c. Intramedullary arteriovenous malformation d. Lymphoma 3. What is the most likely cause of the hypointense rim? b. Extracellular methemoglobin c. Hemosiderin 4. What additional imaging study would you recommend?
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