Fig. 5

Kaplan-Meier curve of BCR-free survival following radical prostatectomy, comparing the effect of IDC-P (without any high-risk features) against patients with at least one high-risk feature (without IDC-P). Mean survival of ≥1 HRF patients was 152 months (95% CI: 133–172, median survival not yet reached), and mean survival of IDC-P[+] patients was 138 months (95% CI: 107–169, median survival not yet reached). Log-rank testing P = 0.955. Abbreviations: IDC-P: intraductal carcinoma of prostate. RP: radical prostatectomy. ART: adjuvant radiotherapy. HRF: High-risk features (Grade groups 4–5, seminal vesicle invasion, positive margins, extraprostatic extension)