What is esophageal cancer?

 Esophageal cancer is a disease in which malignant (cancer) cells form in the tissues of the esophagus. The esophagus is the long, muscular tube that connects the throat (pharynx) to the stomach. It carries food and liquids when you swallow. Early detection improves the chances of successful treatment, but unfortunately, esophageal cancer is often found at a more advanced stage because early symptoms can be mild or absent.