Your doctor will let you know if and when you are eligible to have surgery. In this study, the surgery must be performed within 8-10 weeks after you finish chemotherapy and radiation therapy. You will be asked to sign a separate consent form that describes the surgery and anesthesia (numbing medicine) and their risks in more detail. The screening tests that will help your doctor decide if you are eligible to have surgery include the scans and endoscopy described below (4-6 weeks after radiation and chemotherapy).