MnSOD (Esophageal Protectant) to Prevent Esophagitis During Radiation/Chemotherapy Treatment for Non-Small Cell Lung Cancer (NSCLC)

Inclusion Criteria: * Histologically or cytologically documented NSCLC including squamous cell carcinoma, adenocarcinoma (including bronchoalveolar cell), and large cell anaplastic carcinoma (including giant and clear cell carcinomas) and poorly differentiated non-small cell lung cancer. Totally resected tumors are excluded. * Subjects must be without evidence of M0. * Subjects with T1 or T2 disease with N2 or tumor stage 3, lymph node metastasis 1-2 ( stage 1) disease (Stage IIIA) are eligible if they are medically inoperable. Subjects with T4 with any N or any T with N3 disease are eligible. Radiographic evidence of mediastinal lymph nodes \>2.0 cm in the largest diameter is sufficient to stage N2 or N3 disease. If the largest mediastinal node is \< 2.0 cm in diameter and this is the basis for stage III disease, then at least one of the nodes must be proven positive cytologically or histologically. * Subjects with tumors adjacent to a vertebral body are eligible as long as all gross disease can be encompassed in the radiation boost field. The boost volume must be limited to \< 50% of the ipsilateral lung volume. * Subjects with a pleural effusion that is a transudate, cytologically negative and non-bloody are eligible if the radiation oncologists feel the tumor can still be encompassed within a reasonable field of radiotherapy. Exudative, bloody, or cytologically malignant effusions are ineligible. If a pleural effusion can be seen on the chest CT but not on chest X-ray an…