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Is in-office transperineal biopsy the future of prostate cancer diagnosis?

Gross, Michael D.; Shoag, Jonathan E.; Hu, Jim C.

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doi: 10.1097/MOU.0000000000000567
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Multiple studies have now documented an increase in the incidence of post-prostate biopsy sepsis. If allowed to continue, this rising source of morbidity may present an argument against prostate-specific antigen (PSA)-based prostate cancer screening and a challenge to the safety of active surveillance protocols. Transperineal prostate biopsy promises a long-term solution to the problem of prostate biopsy-related infections. Transperineal techniques have little to no incidence of infection, with some investigators omitting periprocedural antibiotics altogether [1]. Here, we summarize the improvements in technology and technique that have made transperineal biopsy a viable alternative to transrectal biopsy.

MRI-targeted biopsy is rapidly becoming the standard of care for prostate cancer diagnosis based on its ability to preferentially detect high-grade cancers. This has been recapitulated in the transperineal setting. In a study of patients undergoing transperineal biopsy in which 215 patients had a prebiopsy MRI and 281 patients did not, Washino et al. [2] found that patients who had a prebiopsy MRI (with or without cognitive fusion) had a higher rate of clinically significant cancer detection than those who did not (46.0 vs. 35.2%, respectively; P = 0.016). Similarly, the PICTURE trial assigned 249 men to mpMRI followed by transperineal mapping biopsies, as well as image fusion biopsies in men with a lesion on MRI. This study found that transperineal fusion biopsy agreed with mapping biopsies in the detection of clinically significant cancer in 81% of cases [3]. Another recent study of 1032 men undergoing transperineal MRI fusion and transperineal mapping biopsies had similar findings, with a sensitivity of 83.8% for the detection of clinically significant prostate cancer using a cutoff of PIRADS 3 or greater [4]. Remarkably, this study also demonstrated the safety of transperineal biopsy, with no complications requiring hospital admission in any of those biopsied [4]. Recent industry developments of software to perform transperineal-targeted biopsy are promising. Using the Urofusion software, Kaufmann et al.[5] found that software-assisted transperineal-targeted biopsy was superior to transrectal-targeted biopsy with cognitive fusion for the detection of cancer. Similarly, Kosarek et al. [6] recently reported the use of the transperineal UroNav mpMRI/transrectal ultrasound (TRUS)-targeted biopsy platform, the adoption of which will certainly increase the accessibility of transperineal-targeted biopsy.

Despite these improvements, transperineal biopsy remains uncommon. Although MRI-targeted biopsy use has increased over a 7-year period from 0.2% to 6.5% in 2015, the use of transperineal biopsy has remained stagnant, ranging from 0.4% to 0.7% of biopsies, with the overwhelming majority of biopsies being performed transrectally (93.1%) [7]. The lack of adoption of transperineal biopsy is likely attributable to cost, the perceived need for general anesthesia and physician comfort and training. Recent analysis comparing transperineal biopsy under general anesthesia, transrectal biopsy under sedation and fusion biopsy under sedation to a reference of TRUS with sedation found a cost increase of 153%, 90% and 150%, respectively [8]. The cost of general anesthesia, however, is similar to the cost of a fusion biopsy, suggesting that patient (and physician) preference, not insurance reimbursement, may be a driving factor. The advent of in-office transperineal biopsy without the need for general anesthesia or conscious sedation may very well change this cost paradigm. Thurtle et al.[9] have developed the Cambridge Prostate Biopsy (CAMPROBE) cannula device for the coaxial administration of lidocaine immediately prior to biopsy of tissue which they tested in 30 men who had received prior TRUS biopsies. Men reported decreased pain, and, remarkably, 87% (26 of 30) preferred this modality over transrectal biopsy. Other in-office biopsy reports have demonstrated similar results [1]. Our anecdotal experience reflects similar trends in patient tolerability for in-office transperineal biopsy, provided that patients are well counseled in advance of and during the procedure.

The evidence for transperineal biopsy is mounting. The minimal infectious risk combined with the ability to perform the procedure in-office with MRI fusion is appealing. The learning curve for both success and comfort with this technique is nontrivial, but it is time well spent for conscientious clinicians to add a more efficacious and less morbid procedure to their armamentarium.



Financial support and sponsorship

Supported by The Frederick J. and Theresa Dow Wallace

Fund of the New York Community Trust.

Conflicts of interest

J.H. is on the Speaker's Bureau for Genomic Health. The remaining authors have no disclosures.


1. Meyer AR, Joice GA, Schwen ZR, et al. Initial experience performing in-office ultrasound-guided transperineal prostate biopsy under local anesthesia using the precisionpoint transperineal access system. Urology 2018; 115:8–13.
2. Washino S, Kobayashi S, Okochi T, et al. Cancer detection rate of prebiopsy MRI with subsequent systematic and targeted biopsy are superior to nontargeting systematic biopsy without MRI in biopsy naïve patients: a retrospective cohort study. BMC Urol 2018; 18:51.
3. Simmons LAM, Kanthabalan A, Arya M, et al. Accuracy of transperineal targeted prostate biopsies, visual estimation and image fusion, in men needing repeat biopsy in the PICTURE trial. J Urol 2018; [Published online ahead of print Jul 11].
4. Pepe P, Garufi A, Priolo GD, et al. Is it time to perform only magnetic resonance imaging targeted cores? Our experience with 1,032 men who underwent prostate biopsy. J Urol 2018; 200:774–778.
5. Kaufmann S, Russo GI, Thaiss W, et al. Cognitive versus software-assisted registration: development of a new nomogram predicting prostate cancer at MRI-targeted biopsies. Clin Genitourin Cancer 2018; 16:e953–e960.
6. Kosarek CD, Mahmoud AM, Eyzaguirre EJ, et al. Initial series of magnetic resonance imaging (MRI)-fusion targeted prostate biopsy using the first transperineal targeted platform available in the USA. BJU Int 2018; [Published online ahead of print Mar 22].
7. Liu W, Patil D, Howard DH, et al. Adoption of prebiopsy magnetic resonance imaging for men undergoing prostate biopsy in the United States. Urology 2018; 117:57–63.
8. Altok M, Kim B, Patel BB, et al. Cost and efficacy comparison of five prostate biopsy modalities: a platform for integrating cost into novel-platform comparative research. Prostate Cancer Prostatic Dis 2018; [Published online ahead of print Jul 9].
9. Thurtle D, Starling L, Leonard K, et al. Improving the safety and tolerability of local anaesthetic outpatient transperineal prostate biopsies: a pilot study of the CAMbridge PROstate Biopsy (CAMPROBE) method. J Clin Urol 2018; 11:192–199.
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