Esophageal cancer is a malignant growth of tissues that line the inner surface of the esophagus.
The esophagus is the tube that connects your throat with your stomach. It runs the length of your chest, between your lungs, behind your heart, and in close proximity to your back bone. The esophagus is a complex, four-layered muscular organ. It propels food into your stomach with a series of rhythmic contractions called peristalsis. The depth of cancer invasion is important in determining the stage, prognosis, and appropriate treatment.