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Significant dilatation of proximal esophagus with tapering at the distal parts giving the appearance of bird beak sign.
Pooling of contrast material in the esophagus.
A delayed image shows opacification of stomach and bowel loops.
The imaging findings are suggestive of a motility disorder likely to be achalasia. For definitive diagnosis manometry can be considered.
This case is also contributed by Dr. M.M.S. Hoshang