Evaluation of EverLift in the Performance of Polypectomy for Polyps 4-9mm

The details of the proposed study are as follows: 1. Experimental group: using EverLift submucosal injection for polyps 4-9mm of the colon 2. Control group: not using EverLift submucosal injection for polyps 4-9mm of the colon 3. Methods: 1. Colonoscopy will be performed in the same standard of care manner as if no study was taking place. 2. If polyps 4-9mm are identified, the endoscopist is randomized to performing polypectomy with or without submucosal injection of EverLift. 3. After removal of the polypectomy, two biopsies are performed at the margin of the polypectomy site to identify residual lesion. 4. The polyp as well as well as the two biopsies are reviewed by a pathologist.