This is an investigational study. The PET/CT scan will be performed only at M. D. Anderson and the laparoscopy procedure will be performed at both M. D. Anderson and Lyndon Baines Johnson General Hospital (LBJGH). The chemotherapy and/or radiation treatments may be done at either MD Anderson or in your hometown. Up to 70 patients will be enrolled in this multicenter study. Up to 55 will be enrolled at M. D. Anderson.