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Esophageal cancer can also spread to the lungs, liver, stomach, and other parts of the body. There are two major types of esophageal cancer: 1  Squamous cell carcinoma. 2  This type of esophageal cancer starts in squamous cells that line the esophagus. 3  It usually develops in the upper and middle part of the esophagus.
What is the structure difference of the esophagus and trachea? The esophagus is a smooth tube that when we eat food goes trough the esophagus to the stomach. The trachea (windpipe) is made of cartilaginous rings that when we inhale/exhaleâ¦ air (breath in and out) it goes to the lungs. So if food goes accidentally to your trachea, you choke.