If the dysphagia is thereby reproduced and the barium material at that time is seen impacted in the esophagus at the site of the constriction, the ring can be accepted as the cause of dysphagia.

Large arrow points to the B ring, and the small arrow points to the A ring.

Esophageal cancer can be diagnosed through an imaging test (CT or CAT, MRI or PET scans), a barium swallow or an endoscopy exam. If one of these tests determines further testing, your doctor will ...