CASE 106 History: A 60-year-old man presents with progressive numbness in the lower extremities for the past year and recent urinary incontinence. 1. What should be included in the differential diagnosis? (Choose all that apply.) d. Dural arteriovenous fistula (DAVF) e. Glomus arteriovenous malformation (AVM) 2. Which of the four commonly accepted types of spinal vascular malformations is most likely in this patient? a. Type I b. Type II c. Type III. d. Type IV 3. Which of the following patients best fits the demographic for the lesion in this case? 4. What is the most common location of spinal DAVF along the spinal axis? a. High cervical spine (at the level of the foramen magnum) b. Lower cervical spine (below C2 and above T1) d. Sacral spine
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