Figure 1 - a: Barium esophagram showing a dilated, tortuous esophagus and a "bird's beak" appearance of the lower esophageal sphincter (LES).
From the following article
Endoscopic evaluation of esophageal motility disorders
Susan E. McCormick and Richard A. Kozarek
GI Motility online (2006)
doi:10.1038/gimo29
b: Endoscopy in this same patient with late-stage achalasia showing a dilated, "sigmoid" shaped esophagus. (Source: Courtesy of Drew Schembre, M.D.)
Powerpoint slides for teaching
If the slide opens in your browser, Select "File > Save as" to save it.
Download Power Point slide (602K)
© 2019 Nature is part of Springer Nature. All Rights Reserved.
