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What happens to the pylorus after pyloromyotomy?
  1. N M Okorie,
  2. J A Dickson,
  3. R A Carver,
  4. G M Steiner
  1. Sub-department of Paediatric Surgery, Children's Hospital, Sheffield.


    The rate of return to normal of the pylorus muscle in infantile hypertrophic pyloric stenosis was measured by ultrasound, using a simple pyloric volume calculation and a pyloric muscle index. The muscle hypertrophy took from two to 12 weeks to resolve.

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