Esophageal Cancer

When a person swallows, the muscular walls of the esophagus (which is located just behind the trachea [windpipe]), contracts to push food into the stomach. Glands in the lining of the esophagus produce mucus, which keeps the passageway moist and makes swallowing easier.
https://www.medstargoodsam.org/our-services/cancer/conditions/cancer-care/thoracic-cancer/esophageal-cancer/#q={}