And Tumors Sponsors do not influence content. Adenocarcinoma arises from the esophageal glands or within a segment of Barrett esophagus.
Most tumors occur in the lower esophagus.
Both types of cancer more commonly affect men older than 60 years. But risk factors for adenocarcinoma are different from those of squamous cell carcinoma. Adenocarcinoma of the esophagus most commonly is seen within a segment of Barrett esophagus, chronic peptic sores in the lower esophagus. This is an acquired condition characterized by precancerous cells replacing the normal cellular lining of the lowest portion of your esophagus. Squamous cell carcinoma occurs more commonly in people who are heavy users of tobacco and alcohol or who previously swallowed some caustic substance, for example lye.