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esophageal achalasia

n.

An esophageal obstruction that develops due to failure of the esophagogastric sphincter to relax, causing the upper esophagus to fill with retained food.cardiospasm

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.