Dr. Eli Penn, a gastroenterologist with the Gastroenterology Institute, recently completed the first EUS guided esophageal marker placement in the Statesboro area at East Georgia Regional Medical Center. The significant accomplishment will help certain esophageal cancer patients receive radiation therapy. Dr. Penn, a board-certified gastroenterologist, said: "EUS is a safe, non-invasive, diagnostic procedure that can accurately diagnose tumors through biopsy at an earlier stage.