The Role of Magnetic Resonance Imaging in Focal Therapy for Prostate Cancer: Recommendations from a Consensus Panel
SourceBJU International, 113, (2014), pp. 218-227
Article / Letter to editor
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SubjectRadboudumc 15: Urological cancers RIHS: Radboud Institute for Health Sciences
To establish a consensus on the utility of multiparametric magnetic resonance imaging (mpMRI) to identify patients for focal therapy. Topics specifically not included staging of prostate cancer (PCa), but rather identifying the optimal requirements for performing MRI, and the current status of optimally performed mpMRI to a) determine focality of prostate cancer (i.e. localizing small target lesions of 0.5 cm3 and greater), b) to monitor and assess the outcome of focal ablation therapies, and c) to indentify the diagnostic advantages of new MRI methods. In addition, the need for transperineal template saturation biopsies in selecting patients for focal therapy was discussed, if a high quality mpMRI is available. In other words, can mpMRI replace the role of transperineal saturation biopsies in patient selection for focal therapy?Urological surgeons, radiologists, and basic researchers, from Europe and North America participated in a consensus meeting about the use of mpMRI in focal therapy of prostate cancer. The consensus process was face-to-face and specific clinical issues were raised and discussed with agreement sought when possible. All participants are listed among the authors.Consensus was reached on most key aspects of the meeting, however on definition of the optimal requirements for mpMRI, there was 1 dissenting voice. mpMRI is the optimum approach to achieve the objectives needed for focal therapy, if made on a high quality machine (3T with/without endorectal coil or 1.5 with endorectal coil) and judged by an experienced radiologist. Structured and standardized reporting of prostate MRI is paramount. State of the art mpMRI is capable to localize small tumors for focal therapy. State of the art mpMRI is the technique of choice for follow up of focal ablation.The present evidence for MRI in focal therapy is limited. mpMRI is not accurate enough to consistently grade tumor aggressiveness. Template guided saturation biopsies are no longer necessary when a high quality state of the art mpMRI is available, however, suspicious lesion should always be confirmed by (targeted) biopsy.
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