Evaluation and Follow-up: Patients will be assessed and evaluated at least weekly during radiation therapy. Following treatment, patients will be seen 1 month after the completion of treatment, then every 3 months until 2 years, then every 6 months. Chest x-rays will be performed at each follow-up. CT scan of chest and pulmonary function tests will be performed every 6 months for the first 2 years, then yearly.