Figure 2From: Salvage radiotherapy for patients with PSA relapse after radical prostatectomy: a single institution experience Comparisons of bDFS after the end of RT according to different preRT PSA thresholds. PSA < 0.5 ng/ml(○) vs. [0.5–1] ng/ml(□) vs. [1–2] ng/ml(Δ) vs. ≥2 ng/ml(◇).Back to article page