Many of the tests used to diagnose stomach cancer are also used to find esophageal cancer. If your health care provider suspects either cancer, you may have one or more of these tests:
http://www.allinahealth.org/Business-units/Virginia-Piper-Cancer-Institute/Types-of-cancer/Stomach-and-esophageal-cancer/Prevention-and-detection/Tests-you-may-have/
Tests you may have