CASE 37 History: A 16-year-old boy presents with nystagmus and spastic quadriparesis. 1. What should be included in the differential diagnosis? (Choose all that apply.) 2. What does the signal change in the cord represent? a. Hydromyelia d. Myelomalacia 3. What is the peak systolic velocity of the cerebrospinal fluid (CSF) in the foramen magnum in patients with Chiari II malformation compared with that in normal subjects? 4. Is cervical syrinx more often associated with a Chiari I or a Chiari II malformation? a. Chiari I b. Chiari II c. It is equally frequent in both.
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