Abstract
Biochemical recurrence after radical prostatectomy (RP) is associated with risk factors including high baseline levels of prostate-specific antigen (PSA), extraprostatic extension, positive surgical margins (R1), and Gleason score ≥8. The 5-year biochemical progression rate for patients with these characteristics has been estimated to be as high as 50–70 %. Two treatment approaches for the postoperative management of these patients are adjuvant radiation therapy in men with an undetectable PSA or observation followed by early salvage radiation therapy (SRT) in men with persisting or rising PSA after initial postoperative undetectable values.
Three randomized phase III trials demonstrated a nearly 20 % absolute benefit for biochemical progression free survival after adjuvant radiation therapy (ART) (60–64 Gy) compared to a “wait-and-see” policy. The greatest benefit has been revealed in patients with positive margins and pT3 tumors.
SRT can be offered to patients with rising PSA after RP. Of these patients, 30–70 % will experience a decrease in their PSA to an undetectable range, and in about 40–50 % of these patients, the PSA will remain stable after 5 years.
At the present time, there are no published randomized trials to compare ART versus SRT.
The purpose of this chapter is to review the rationale, results, and possible side effects for the two treatment approaches ART and SRT.
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Bottke, D., Bartkowiak, D., Wiegel, T. (2017). Postoperative Irradiation: Immediate or Early Delayed?. In: Bolla, M., van Poppel, H. (eds) Management of Prostate Cancer. Springer, Cham. https://doi.org/10.1007/978-3-319-42769-0_16
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