Histopathological to multiparametric MRI spatial mapping of extended systematic sextant and MR/TRUS-fusion-targeted biopsy of the prostate
Purpose MRI has limited ability to detect multifocal disease or the full extent of prostate involvement with clinically significant prostate cancer (sPC). We compare the spatial co-localization at sextant resolution of MRI lesions and histopathological mapping by combined targeted and extended syste...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2019
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| In: |
European radiology
Year: 2018, Volume: 29, Issue: 4, Pages: 1820-1830 |
| ISSN: | 1432-1084 |
| DOI: | 10.1007/s00330-018-5751-1 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1007/s00330-018-5751-1
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| Author Notes: | David Bonekamp, Patrick Schelb, Manuel Wiesenfarth, Tristan Anselm Kuder, Fenja Deister, Albrecht Stenzinger, Joanne Nyarangi-Dix, Matthias Röthke, Markus Hohenfellner, Heinz-Peter Schlemmer, Jan Philipp Radtke |
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| 245 | 1 | 0 | |a Histopathological to multiparametric MRI spatial mapping of extended systematic sextant and MR/TRUS-fusion-targeted biopsy of the prostate |c David Bonekamp, Patrick Schelb, Manuel Wiesenfarth, Tristan Anselm Kuder, Fenja Deister, Albrecht Stenzinger, Joanne Nyarangi-Dix, Matthias Röthke, Markus Hohenfellner, Heinz-Peter Schlemmer, Jan Philipp Radtke |
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| 520 | |a Purpose MRI has limited ability to detect multifocal disease or the full extent of prostate involvement with clinically significant prostate cancer (sPC). We compare the spatial co-localization at sextant resolution of MRI lesions and histopathological mapping by combined targeted and extended systematic biopsies. Materials and methods Sextants were mapped for sPC (ISUP group ≥ 2) by 24-core transperineal systematic biopsies in 316 patients with suspicion for sPC and by MR lesions of PI-RADS score of ≥ 3. The gold standard is combined systematic (median 23 cores) and targeted biopsies.ResultsOf 316 men, 121 (38%) harbored sPC. Of these 121 patients, 4 (3%) had a negative MRI. MRI correctly identified 117/121 (97%) patients with sPC. In these patients, mpMRI missed no additional sPC in 96 (82%), while MRI-negative sPC lesions were present in 21 patients (18%). Of 1896 sextants, 379 (20%) harbored sPC. MR-positive sextants contained sPC in 26% (337/1275), compared to 7% (42/621) in MR-negative sextants. On a patient basis, sensitivity was 0.97, specificity 0.22, positive predictive value 0.43, and negative predictive value 0.91. On a sextant basis, sensitivity was 0.73, specificity 0.38, positive predictive value 0.26, and negative predictive value 0.93.Conclusion MpMRI mapping agreed well with histopathology with, at the observed sPC prevalence and on a patient basis, excellent sensitivity and negative predictive value, and acceptable specificity and positive predictive value for sPC. However, 18% of sPC was outside the mpMRI mapped region, quantifying limitations of MRI for complete localization of disease extent.Key Points • Currently, exclusive MRI mapping of the prostate for focal treatment planning cannot be recommended, as significant prostate cancer may remain untreated in a substantial number of cases. • At the observed sPC prevalence and on a patient basis, mpMRI has excellent sensitivity and NPV, and acceptable specificity and PPV for detection of prostate cancer, supporting its use to detect suspicious lesions before biopsy. • Despite the excellent global performance, 18% of sPC was outside the mpMRI mapped region even when a security margin of 10 mm was considered, indicating that prostate MRI has limited ability to completely map all cancer foci within the prostate. | ||
| 534 | |c 2018 | ||
| 650 | 4 | |a Image-guided biopsy | |
| 650 | 4 | |a Magnetic resonance imaging | |
| 650 | 4 | |a Male | |
| 650 | 4 | |a Prostate cancer | |
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| 700 | 1 | |a Radtke, Jan Philipp |d 1985- |e VerfasserIn |0 (DE-588)1020328290 |0 (DE-627)688118089 |0 (DE-576)360178170 |4 aut | |
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