High Resolution Optical Imaging of the Esophagus Using the NvisionVLE™ Imaging System

Exclusion Criteria

• •Patients on anticoagulation undergoing high risk procedures in accordance to ASGE guideline for the management of antithrombotic agents for endoscopic procedures (2009)\*.
• •Patients with esophageal varices that preclude biopsies.
• •Presence of an esophageal mass that precludes full distention of the balloon from the NvisionVLE catheter.
• •Patients with esophageal strictures that would prevent adequate expansion of the balloon from the NvisionVLE catheter.
• •Patients with known inflammatory disease, esophageal tears or ulcers, which prohibit full distention of the balloon from the NvisionVLE catheter.
• •Patients with known eosinophilic esophagitis.
• •Patients that are pregnant.
• •Patients with a history of hemostasis disorders\*\*.
• •* Patients on anticoagulation undergoing low risk procedures are not excluded. \*\* Hemostasis disorders will include, but will not be limited to: patients with hemophilia or other congenitally acquired clotting factor deficiencies, patients with cirrhosis with coagulopathy, patients known to have thrombocytopenia (\<100,000 plt/ul) and individuals with von Willibrand's disease or other known platelet malfunction disorders.