Abstract
To compare the results of the MRI-ultrasound fusion targeted biopsy (MRF-TB) and systematic 12-core biopsy (SB) of the prostate and analyze the relationship between biopsy results and the prebiopsy multiparametric MRI. The study included 380 men aged from 45 to 80 years with a total PSA level of 4 to 10 ng/ml (according to Hybritech calibration) and a negative result of digital rectal examination. All men underwent the multiparametric MRI of the prostate before biopsy. MRI results were assessed according to the PI-RADS Version 2 criterion. In all men (n=247) with PI-RADS category 2 or higher lesion were performed MRF-TB (4 targeted columns) and SB (12 standard points) of the prostate. There were no significant differences in the detection of all types of prostate cancer (PCa) in all patients between MRF-TB and SB (p=0.731). At the same time, significantly less low-risk PCa (Gleason 6) (p<0.001) and significantly more aggressive PCa (Gleason more or equal 7) (p<0.001) were detected in MRF-TB group in comparison with SB group. In addition, MRF-TB allowed to detect significantly more aggressive type of PCa (Gleason more or equal 4 + 3) compared to SB (p=0.025). MRF-TB allows to detect more significant PCa (Gleason more or equal 7) in comparison with SB, while limiting the detection of low-risk PCa (Gleason 6) in general population of men.
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