A solution containing a dye (barium), which is visible on X-rays, has been swallowed (upper GI series) and X-rays have been taken of the esophagus. There is a narrowing near the stomach (indicated by the arrow). This non-cancerous ring of tissue (Shatzki's ring) may cause swallowing problems (dysphagia) and can be treated with dilation of the stricture.
Update Date 10/8/2012
Updated by: George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, California. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, and Stephanie Slon.