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We studied 96 patients subjected to elective proximal gastric vagotomy for intractable duodenal ulceration. Dysphagia was a frequent finding and occurred in 32 percent. It appeared in the immediate postoperative period and usually lasted for 1 to 2 months without any abnormalities in lower esophageal sphincter function. In five patients, dysphagia was severe and, although transient, was associated with changes in lower esophageal function simulating those observed in achalasia. The mechanism of these motor abnormalities is probably due to a reversible neuromuscular dysfunction of the lower esophageal sphincter.
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