Dose Escalation of Neoadjuvant Proton Beam Radiotherapy With Concurrent Chemotherapy in Locally Advanced Esophageal Cancer

Inclusion Criteria: * Patients with a histologic diagnosis of adenocarcinoma of the esophagus located distal to the carina * Patients with AJCC 7th edition clinical stage IIB-IIIC * Patient must be \>18 years of age. * Patients must have an ECOG Performance Status of 0-1 * Patients must be able to provide informed consent. * Patients must be surgical candidates with adequate hematologic, renal, hepatic and pulmonary function * serum AST and ALT \< 2 times the upper limit of normal * Patients must have bilirubin \< 1.5 × normal. * WBC \> 3000/mm3, platelets \> 100,000 mm3. * Hemoglobin \> 10 g/dL serum creatinine \< 1.5 times the upper limit of normal * Women of child-bearing potential as long as she agrees to use a recognized method of birth control (e.g. oral contraceptive, IUD, condoms or other barrier methods etc.). Hysterectomy or menopause must be clinically documented. Exclusion Criteria: * Patients with primary tumors exceeding 8 cm in length or 5 cm in width ( length should be measured by endoscopic findings, width should be measured by diagnostic CT or CT portion of PET/CT) * Patients with primary tumors located at or above the carina * Prior or simultaneous malignancies within the past two years (other than cutaneous squamous or basal cell carcinoma, melanoma in situ or thyroid carcinoma) * Pregnant women, women planning to become pregnant and women that are nursing