Clinical Utility of WATS3D: A 5-Year Prospective Study

Inclusion Criteria: * Able to read, comprehend and complete the IRB-approved consent form * Aged 18 or older * Meet one of the following: * Patients with heartburn or regurgitation undergoing a screening EGD, who undergo WATS3D sampling and forceps biopsies for suspicion of BE, or * Patients with known BE with or without dysplasia undergoing a surveillance EGD with WATS3D biopsies and forceps biopsies, or * Patients who have undergone endoscopic eradication (i.e. radiofrequency ablation or cryoablation) who are undergoing surveillance EGD following the establishment of complete eradication of intestinal metaplasia (CEIM) * Only patients who undergo both forceps biopsies and WATS3D of the esophagus will be included. Exclusion Criteria: * Pregnancy at time of endoscopy * Unresolved drug or alcohol dependency that will limit ability to comprehend or follow instructions related to informed consent, post-treatment instructions or follow-up guidelines * Medical condition that will likely prohibit completion of a 5 year study