CASE 154 History: A 25-year-old woman was involved in a motor vehicle collision. 1. What should be included in the differential diagnosis? (Choose all that apply.) d. Pars interarticularis defect e. Congenital absence of the pedicle 2. Where along the spinal axis is congenital absence of the pedicle most common? c. Lumbar spine d. Sacrum 3. Osseous abnormalities frequently reported in association with a congenitally absent pedicle include all of the following except: c. Additional hypoplastic pedicles
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