This 20-year-old patient presented with acute onset muscle weakness and numbness. Laboratory studies showed elevated CPK (4000) and negative toxin/drug screen. The patient was treated with steroid prior to muscle biopsy.
How would you characterize the abnormal muscle fibers seen in figures #1 – #3?
D. Acutely angulated
Correct Answer: Necrotic
These represent necrotic muscle fibers. In this case all of the damaged myofibers had a similar appearance suggesting acute monophasic injury.
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