What conditions are included in the differential diagnoses of spinal muscle atrophy (SMA) when pseudohypertrophy of the calf is present?

Updated: Nov 05, 2018
  • Author: Ashish S Ranade, MBBS, MS, MRCS; Chief Editor: Jeffrey A Goldstein, MD  more...
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Answer

Pseudohypertrophy of the calf is present, which may confound the diagnosis (ie, with Duchenne muscular dystrophy and Becker muscular dystrophy). Bouwsma reported that this finding was associated with elevated serum creatine kinase (CK). [25]  This combination was only observed in males; no females in his series had hypertrophy of the calves. [25]


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