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Review Question - QID 5011

In scope icon L 3 B
QID 5011 (Type "5011" in App Search)
A 5-year-old boy presents with a clumsy gait. The referring pediatrician notes normal intelligence. On further work-up, the patient is noted to have increased keratan sulfate in his urine. Figure A and B exhibit flexion-extension cervical spine radiographs. What is the diagnosis?
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  • B
  • A
  • B