Barium
The lower oesopha...
AP - lower oesophageal sphincter
The lower oesophageal sphincter is now wider post myotomy. There is still mild narrowing from post-myotomy oedema.
Modality: Barium (AP - lower oesophageal sphincter)

- “ Per-oral esophageal myotomy (POEM) is an increasingly-used technique to treat achalasia, in the place of the more traditional open myotomy with fu...”

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