What is Esophageal Cancer

What is the esophagus?

The esophagus is a hollow tube that carries food and liquids from the throat to the stomach. When a person swallows, the muscular walls of the esophagus contract to push food down into the stomach. Glands in the lining of the esophagus produce mucus, which keeps the passageway moist and makes swallowing easier. The esophagus is located just behind the trachea (windpipe). In an adult, the esophagus is about 10 inches long.

What is cancer?

Cancer is a disease that affects cells, the body’s basic unit of life. To understand any type of cancer, it is helpful to know about normal cells and what happens when they become cancerous. The body is made up of many types of cells.

Normally, cells grow, divide, and produce more cells when they are needed. This process keeps the body healthy and functioning properly. Sometimes, however, cells keep dividing when new cells are not needed. The mass of extra cells forms a growth or tumor. Tumors can be benign or malignant.

Benign tumors are not cancer. They usually can be removed and, in most cases, they do not come back. Cells in benign tumors do not spread to other parts of the body. Most important, benign tumors are rarely a threat to life.

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