PO-0738: PET with 18F-Choline for Evaluation of Prostate Cancer Patients with Biochemical Relapse/persistence

ESTRO 36 _______________________________________________________________________________________________ two groups.Then, a subgroup analysis was performed, considering LNI risk, as assessed by the Roach formula, using different cut-off levels(Fig. 1, 15%,20%,25%, and 30%).The subgroup analysis confirmed no statistically significant differences between WPRT and PORT for each nodal risk group, either in terms of bDFS, DFS OS, age <70 years (p=0.077).Only OS curve showed a better prognosis for WPRT, statistically significant in 15% and 20% nodalrisk groups(Fig.2), but not confirmed by univariate analysis.