Abstract

To evaluate the accuracy of multiparametric transrectal ultrasound (contrast- enhanced ultrasound plus elastosonography) in the detection of the suspicious area diagnosed by multiparametric magnetic resonance (mpMRI). From June 2018 to June 2019 60 men (median age 63 years) with persistent suspicion of cancer underwent repeat saturation biopsy following pelvic mpMRI and the lesions characterized by a PI-RADS (Prostate Imaging Reporting and Data System) score ≥ 3 were submitted to 4 additional cores by transperineal cognitive fusion biopsy (TPBx). All patients, before prostate biopsy, underwent contrast- enhanced ultrasound (CEUS) following intravenous administration of a bolus of Sonovue® (2.4 mg of nonpyrogenic suspension of phospholipid/sulphur hexaphloride); in addition, a transrectal elastosonography (TRES) was done to evaluate prostate tissue elasticity. The accuracy of multiparametric ultrasound to detect the mpMRI lesions was evaluated. In 27/60 (45%) of men a T1c prostate cancer (PCa) was diagnosed by TPBx and 21 (77.8%) of them were classified as clinically significant cancer (csPCa); in detail, 16/21 (76.2%) vs. 5/21 (23.8%) csPCa were located in the peripheric and anterior zone of the gland, respectively. Median total PSA was 10.3 ng/ml (range: 4.9-51 ng/ml). TRES and CEUS were positive for csPCa only in 6/21 (28.5%) and 13/21 (62%) of TPBx showing an increased accuracy directly related with the PI-RADS scores Conclusions: Multiparametric ultrasound using TRES and CEUS after Sonovue® administration did not improve the accuracy of TPBx in diagnosing csPCa.

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