February 5, 2021 Multiparametric MRI-targeted biopsy for clinically significant prostate cancer can yield detection rates similar to systematic transrectal ultrasound-guided (TRUS) biopsy, while potentially enabling over one-third of prostate biopsies to be avoided, according to research published online February 4 in
In a multicenter, prospective, and randomized phase III study called PRostate Evaluation for Clinically Important Disease: MRI vs. Standard Evaluation Procedures (PRECISE), a team of researchers from Canada found that providing targeted biopsies after a positive multiparametric MRI scan was noninferior to systematic TRUS biopsies for detecting prostate cancers with an International Society of Urological Pathology grade group (GG) of 2 or higher.
email article
Prostate MRI followed by selective biopsy detected as many clinically significant cancers as standard ultrasound-guided systematic biopsy and detected 50% fewer low-risk cancers, a large randomized trial showed.
Targeted biopsy with multiparametric MRI identified grade group (GG) ≥2 tumors in 35% of men as compared with 30% for systematic biopsy with transrectal ultrasound (TRUS) guidance. The proportion of GG1 tumors decreased from 22% with TRUS biopsy (Bx) to 10% with targeted MRI-guided biopsy. Almost 40% of men randomized to the MRI group had negative imaging results, allowing them to avoid biopsy altogether.
Men who had MRI-guided prostate biopsy also had fewer adverse events (AEs), Laurence Klotz, MD, of the Sunnybrook Health Sciences Center in Toronto, and coauthors reported in