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In patients with achalasia submitted to esophagomyotomy and Dor's antireflux procedure, there is a progressive clinical deterioration of initially good results if a very long follow-up is performed (23 years after surgery), mainly due to an increase in pathologic acid reflux disease and the development of short- or long-segment Barrett esophagus.
Csendes et al. (Fri,) studied this question.