Sphincter difference: Gastroesophageal reflux is gastric contents going up into esophagus because of lack of normal tone of distal esophageal sphincter or muscle which closes esophagus. Achalasia represents too much tone and spasm of sphincter causing obstruction to ingested materials and prolonged retention in esophagus.
Answered 12/27/2014
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A doctor has provided 1 answer
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