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Freehand Versus Grid-Based Transperineal Prostate Biopsy: A Comparison of Anatomic Region Yield and Complications.

PMID: 34100650 (view PubMed database entry)
DOI: 10.1097/ju.0000000000001902 (read at publisher's website )

Ahmet Urkmez, Cihan Demirel, Muammer Altok, Tharakeswara K Bathala, Daniel D Shapiro, John W Davis,

<h4>Purpose</h4>The freehand (FH) technique of transperineal (TP) prostate biopsy using commercialized needle access systems facilitates a reduction in anesthesia requirements from general to local or local/sedation. We sought to compare the efficacy and complication rates of the FH method with those of the standard grid-based (GB) method.<h4>Materials and methods</h4>The GB method was performed from 2014 to 2018, and the updated FH technique was performed from 2018 to 2020, yielding comparative cohorts of 174 and 304, respectively.<h4>Results</h4>The FH and GB techniques demonstrated equivalent yields of ≥Gleason grade group (GGG)-2 prostate cancer (PCa). The FH group had a significantly higher mean number of cores with ≥GGG-2 PCa involvement (p=0.011) but a significantly lower mean number of biopsy samples (p <0.01). The urinary retention rate of the GB group (10%) was significantly higher than that of the FH group (1%; p <0.01). The rates of ≥GGG-2 PCa involvement in the anterior (GB, 31%) and anteromedial (FH, 22%) sectors were higher than those in other sectors (range, 0-9%). For multiparametric MRI, the rate of ≥GGG-2 PCa detection in the anteromedial prostate (23%) was nearly half that in other locations (range, 38-55%).<h4>Conclusions</h4>Compared with GB TP biopsy, FH TP biopsy demonstrates an equivalent cancer yield with no risk of sepsis, a significantly reduced risk of urinary retention, and reduced anesthesia needs. The higher number of cores with ≥GGG-2 PCa involvement in the FH group suggests that FH TP biopsy can sample the prostate better than GB-TP biopsy can.

J Urol (The Journal of urology)
[2021, :101097JU0000000000001902]

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