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COMPARATIVE STUDY
JOURNAL ARTICLE

Transperineal Versus Transrectal MRI/TRUS Fusion Targeted Biopsy: Detection Rate of Clinically Significant Prostate Cancer

Pietro Pepe, Antonio Garufi, Giandomenico Priolo, Michele Pennisi
Clinical Genitourinary Cancer 2017, 15 (1): e33-e36
27530436

INTRODUCTION: To evaluate the detection rate for clinically significant prostate cancer (PCa) of transperineal (TP) versus transrectal (TR) multiparametric (mp) magnetic resonance imaging (MRI)/transrectal ultrasound-guided (TRUS) fusion targeted biopsy.

PATIENTS AND METHODS: From January 2015 to January 2016, a total of 200 men (median age, 61 years) with negative digital rectal examination findings underwent repeat saturation TP prostate biopsy (SPBx; median 30 cores) for increasing or persistent elevated prostate-specific antigen values. Ten day before SPBx, all patients underwent 3.0 T pelvic mpMRI (Achieva 3T; Philips Healthcare Best, Netherlands). In the presence of mpMRI lesions suggestive of cancer (Prostate Imaging-Reporting and Data System [PI-RADS] score 4/5), targeted mpMRI/TRUS TR fusion guided biopsies (4 cores) and TP cognitive biopsies (4 cores) were added to SPBx.

RESULTS: Median prostate-specific antigen was 8.6 ng/mL, and mpMRI revealed a suspicious lesion in 95 (47.5%) of 200 cases. Overall, in 60 (30%) of 200 men, a clinically significant PCa was found, and in all cases, mpMRI was positive. SPBx, TR fusion, and mpMRI/TRUS TP cognitive targeted biopsy diagnosed 59 (98.3%), 40 (78.3%), and 56 (93.3%) clinically significant PCa, respectively. TR fusion versus TP targeted biopsy missed 12 versus 1 (P = .001) cancers of the anterior zone and 8 versus 3 (P = .12) cancers of the peripheric gland, respectively; moreover, PCa diagnosed by TR fusion versus TP targeted biopsy had a mpMRI lesion diameter and percentage of positive cores equal to 13 versus 10 mm and 33% versus 58% (P = .001), respectively.

CONCLUSION: mpMRI/TRUS TP cognitive targeted biopsy found a greater percentage of clinically significant PCa of the anterior zone compared to the mpMRI/TRUS TR fusion approach (93.3% vs. 25%; P = .0001).

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