The esophagus is the tube that transports food from the throat to the stomach. Esophageal cancer is the growth of cancer cells the esophagus.
There are two main types of esophageal cancer:
Cancer occurs when cells in the body divide out of control. If cells keep dividing, a mass of tissue forms. These are called growths or tumors. If the tumor is malignant, it is cancer. They can invade nearby tissue and spread to other parts of the body.