Primary
1. To establish the efficacy of proton beam therapy with and without photon beam radiation therapy for skull base chondrosarcoma.
Secondary
1. To determine the patterns of failure of skull base chondrosarcoma treated with surgery and proton beam therapy with and without photon beam radiation therapy.
2. To measure and characterize the late effects of proton therapy using longitudinal neuropsychological, neuro-endocrine, neuro-opthalmological and neuro-otologic testing. |