Esophageal cancer is a disease in which malignant (cancer) cells form in the tissues of the esophagus. The esophagus is the hollow, muscular tube that moves food and liquid from the throat to the stomach. The wall of the esophagus is made up of several layers of tissue, including mucous membrane, muscle, and connective tissue. Esophageal cancer starts at the inside lining of the esophagus and spreads outward through the other layers as it grows.
The most common signs of esophageal cancer are painful or difficult swallowing and weight loss. These and other symptoms may be caused by esophageal cancer or by other conditions. A doctor should be consulted if any of the following problems occur:
· Painful or difficult swallowing
· Weight loss
· Pain behind the breastbone
· Hoarseness and cough
· Indigestion and heartburn