Adenocarcinoma of the esophagus often starts in people with Barrett's esophagus. Still,
most people with Barrett's esophagus never get esophageal cancer.
Over time, the gland cells that
replace the squamous cells can develop dysplasia. This is when glandular cells start to
look abnormal and grow in an abnormal way. Esophageal dysplasia is a pre-cancerous
types of esophageal cancer start in the inner lining of the esophagus. As these cancers
grow, they often narrow the opening in the middle of the esophagus. This is called the
lumen. This can cause problems with swallowing.
The cancer can also grow outward,
through the layers of the esophagus to nearby tissues. These include nearby lymph nodes
and the windpipe. Once the cancer has grown outside the esophagus, it can also spread to
other parts of your body. It may spread to other organs, such as your stomach, liver, or