Can We Improve the Preoperative Prediction of Prostate Cancer Recurrence With Multiparametric MRI?

Paolo Capogrosso1, Emily A Vertosick2, Nicole E Benfante2

  • 1Memorial Sloan Kettering Cancer Center, New York, NY; Division of Experimental Oncology/Unit of Urology, Urological Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy.

Abstract

Insights

Pre-biopsy multiparametric MRI (mpMRI) lesion score did not improve prostate cancer (PCa) recurrence prediction models. Further investigation with larger datasets is needed to confirm the value of mpMRI in preoperative risk assessment for PCa.

Area of Science:

  • Urology
  • Radiology
  • Oncology

Background:

  • Multiparametric magnetic resonance imaging (mpMRI) is increasingly used for prostate cancer (PCa) assessment.
  • Pre-biopsy mpMRI lesion scores are routinely available but their impact on predictive models is unclear.

Purpose of the Study:

  • To evaluate if preoperative mpMRI lesion score enhances the performance of established predictive models for PCa recurrence.
  • To assess the association between mpMRI scores and biochemical recurrence risk after radical prostatectomy.

Main Methods:

  • Analysis of 372 PCa patients treated with radical prostatectomy (2012-2017) with pre-biopsy mpMRI.
  • Standardized 5-point scoring of suspicious mpMRI lesions.
  • Cox regression analysis to assess mpMRI score association with recurrence, using Kattan and D'Amico models.

Main Results:

  • 53% and 30% of patients had lesions scored 4 or 5, respectively.
  • mpMRI score showed a wide range of 2-year recurrence risk (5% for score 1-2 vs. 29% for score 5).
  • Adjusted hazard ratios for scores 3, 4, and 5 were 1.66, 1.96, and 2.71, but confidence intervals were wide and included 1.

Conclusions:

  • Preoperative mpMRI lesion score did not significantly improve commonly used PCa risk prediction models.
  • The utility of pre-biopsy mpMRI in refining preoperative risk stratification warrants further study in larger cohorts.

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