[en] Background and purpose: Prostate-specific antigen (PSA) failure after radical prostatectomy is a common clinical scenario, and there is no consensus on how it should be managed. Salvage radiation to the prostatic bed is a potentially curative treatment option, and is the subject of this review. Patient selection, and the efficacy and toxicity of treatment will be discussed, and recommendations made for current practice and future studies. Methods: An English language MEDLINE search was performed, limited to the years 1989-2000, using the MeSH headings 'prostatic neoplasms' and 'radiotherapy'. The 660 abstracts identified were reviewed, and articles concerning patient selection for, or outcome of, post-operative radiation to the prostatic bed selected. After exclusion of articles concerning adjuvant, rather than salvage, radiation, this left a total of 22 case series, including 1062 patients for the review of treatment efficacy. Results and conclusions: The quality of the evidence makes it difficult to form a judgment regarding the efficacy of salvage radiation following radical prostatectomy, particularly in men with a PSA level in the range 0.01-0.2 ng/ml. Salvage radiation may be more effective given earlier rather than later. These considerations have important consequences for the interpretation of current trials of adjuvant radiation following radical prostatectomy