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Review Question - QID 210981

Duchenne and Becker Muscular Dystrophy Introduction Pathogenesis QID: 210981 (M1.OMB.18.4696)
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QID 210981 (Type "210981" in App Search)
A 4-year-old boy is brought to the clinic by his parents for difficulty walking. He had an uncomplicated birth history and has been meeting his developmental goals. His mom reports that recently he has been using his arms and head to stand up and has been waddling more than usual. Physical examination was unremarkable except for the findings demonstrated in Figure A and a waddling, wide-based gait. What is the most likely pathophysiology of this child’s disease?
  • A
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  • A