MRI/US Fusion Transperineal Versus Transrectral Biopsy of Prostate Cancer: Outcomes and Complication Rates, a Tertiary Medical Center Experience in the Middle East

Abstract

Objective : To report on the outcomes of transperineal versus transrectal magnetic resonance imaging/ultrasound fusion biopsy of the prostate including detection of clinically significant cancer and complications. This is the first and largest series in the Middle East. Material and methods Between May 2019 and June 2020, 145 patients with suspicious lesions on magnetic resonance imaging underwent magnetic resonance imaging/ultrasound fusion prostate biopsy at our center. Transperineal biopsy was performed under light sedation, while transrectal biopsy patients had a periprostatic block for anesthesia. Clinically significant cancer was defined as Gleason ≥3 + 4 Results In all, 98 transperineal biopsies and 47 transrectal magnetic resonance imaging/ultrasound fusion prostate biopsies were done. Patients had similar prebiopsy parameters (transperineal vs. transrectal): median age (64.5 vs. 66 years; P = .68), median prostate-specific antigen value (7.5 vs. 7.5; P = .42), and median prostate volume (51 vs. 52.5; P = .83). Those that underwent transperineal biopsy had fewer average total number of cores compared to transrectal ultrasound-guided biopsy (11 vs. 13; P = .025) fewer average number of random cores (3 vs. 6; P < .0001), and the detection rate of clinically significant cancer was similar between the groups (44% vs. 48.9%; P = .57). No difference in hematuria, retention, and sepsis rate requiring admission (1 vs. 2; P = .2) was observed. However, more patients had urinary tract infection in the transrectal ultrasound-guided biopsy group compared to transperineal biopsy group (5 vs. 1; P = .006) that were treated with antibiotics on outside basis. Conclusion : Magnetic resonance imaging/ultrasound transperineal fusion biopsy has similar detection rate of clinically significant cancer compared to transrectal ultrasound-guided biopsy with less urinary tract infection post biopsy.