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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



stage I esophageal adenocarcinoma  listen  (... ee-SAH-fuh-JEE-ul A-deh-noh-KAR-sih-NOH-muh)

  Stage I is divided into stages IA and IB, depending on where the cancer is found. In stage IA, cancer has formed in the inner (mucosal) layer of the esophageal wall. The tumor cells look a lot like normal cells under a microscope. In stage IB, cancer has formed (1) in the inner (mucosal) layer of the esophageal wall. The tumor cells do not look at all like normal cells under a microscope and they grow quickly; or (2) in the inner (mucosal) layer and spread into the middle (muscle) layer of the esophageal wall. The tumor cells look a lot like normal cells under a microscope.