Biochemical recurrence-free conditional probability after radical prostatectomy: A dynamic prognosis.

Area of Science:

• Urology
• Oncology
• Surgical Oncology

Background:

• Prostate cancer recurrence after radical prostatectomy impacts patient outcomes.
• Accurate prediction of recurrence-free survival is crucial for managing patient expectations and treatment planning.

Purpose of the Study:

• To estimate conditional biochemical recurrence-free probability in men with localized prostate cancer.
• To develop a predictive model for disease-free interval post-minimally invasive radical prostatectomy.

Main Methods:

• Analysis of 6195 patients (laparoscopic and robotic radical prostatectomy) over 15 years.
• Biochemical recurrence defined as prostate-specific antigen ≥0.2 ng/dL.
• Development and internal validation of a nomogram for static and dynamic prognosis prediction.

Main Results:

• 19% of patients experienced biochemical recurrence with a median follow-up of 8.49 years.
• Preoperative PSA, positive margins, extracapsular extension, Gleason score, and laparoscopic approach were significant predictors.
• Conditional survival probability improved over time, particularly for high-risk patients.

Conclusions:

• Conditional survival offers valuable insights into evolving prognosis post-surgery.
• The risk of recurrence diminishes with time, benefiting patient counseling.
• A user-friendly nomogram can optimize postoperative follow-up and patient communication.