During the procedure, a part of the esophagus will be removed entirely ... a patient's small intestine to deliver nutrition ...

a; Classical achalasia, showing a dilated esophageal body bird beak-like narrowing of ... shows typical corkscrew appearance of the lower part of the esophagus (see Video 3).

Barium swallow illustrating spiral or "corkscrew" deformity of the tubular esophagus caused by simultaneous, lumen-obliterated contractions of the circular muscle of the esophageal body.