1. Patients must have pathologically confirmed recurrence (reappearance of previously cleared) of a squamous cell cancer primary located in the upper aerodigestive tract or a second squamous cell primary. Patients may have experienced more than one recurrence as long as the first recurrence occurred greater than 6 months following the end of the prior RT. Pathology slides from primary as well as recurrence must to be obtained for review by UCI Department of Pathology to confirm histology and patient eligibility. Previous radiation records including simulation and portal films must be submitted to the UCI Department of Radiation Oncology for review of treated areas and to assure that spinal cord tolerance is not exceeded.