XXXX ion radiotherapy for treatment of @entity263 and subsequent outcomes after biochemical failure.

@entity505 @entity1 @entity263
BACKGROUND/AIM: @entity505 ion radiotherapy is expected to be suitable to treat @entity263 because it yields great biological and physical effects. The aim of this study was to examine long-term results and subsequent outcomes after biochemical failure. @entity1 AND METHODS: A total of 254 @entity1 were treated from the beginning of 2003 and followed through 2009. Long-term hormone therapy was also used for some intermediate-risk and high-risk @entity1 . RESULTS: Among the @entity1 examined, 54 @entity1 experienced biochemical failure. Failure-free survival was 76%, 91% and 76% at eight years in low-risk, intermediate-risk and high-risk @entity1 , respectively. Clinical progression occurred only in high-risk @entity1 , with 89% progression-free survival at eight years. After biochemical failure, diseases of most @entity1 were well controlled by salvage therapy but twelve high-risk @entity1 (5%) died of @entity263 . CONCLUSION: @entity505 ion radiotherapy had an excellent effect on @entity263 . Factors influencing salvage therapy included PSA kinetics and duration between radiation and failure.
