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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.
A lung is an individual organ composed of tubular structures and alveoli bound together by fibrous connective tissue (FCT). In the human, there are two lungs--right and left. Each lung is supplied by a primary or mainstem bronchus leading off of the trachea. The right lung is larger in volume than the left lung.