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• W2971413315 abstract "To compare the correlation of transition zone prostate-specific antigen density (TZPSAD) versus whole gland (WG) density (PSAD) with Gleason score.In this single-center, retrospective cohort study, men undergoing MRI of the prostate in 2015 and 2016 who had a transperineal template saturation biopsy within 6 months of MRI were included (n = 178; median age 64 y, interquartile range [IQR] 58-68 y; PSA 6.6 ng/ml, 4.6-9.7 ng/ml). The WG and TZ were segmented voxel-wise on T2-weighted transverse planes. The volumes and corresponding PSA-densities were calculated. Correlations with the Gleason score were assessed with Spearman's rho. Optimal thresholds of the PSA densities were computed using the Youden Index of the receiver-operating-characteristics curve. A p-value of ≤ 0.05 was considered statistically significant.Median WG volume was 45 ml (IQR: 33.9-58.7 ml, range: 17.2-165.3 ml), median volume of the TZ was 27.3 ml (IQR: 19.2-39.3 ml, range: 9.0-141.1 ml). Both PSA density values, PSAD and TZPSAD, correlated significantly with the Gleason score: The PSAD (rho = 0.39) showed significantly weaker correlation than the TZPSAD (rho = 0.44, p = 0.05). ROC analysis revealed an ideal cut-off of 0.15 ng/ml2 for PSAD (95%-CI: 0.09-0.16 ng/ml2) and 0.22 ng/ml2 for the TZPSAD (0.15-0.32 ng/ml2) for discrimination between Gleason 3 + 4 and 4 + 3.The TZPSAD exhibited a stronger correlation with cancer dedifferentiation than PSAD and may thus be a better surrogate marker for cancer aggressiveness than PSAD. Moreover, the TZPSAD threshold of 0.22 ng/ml2 may help in risk stratification of men with suspected PCa." @default.
• W2971413315 created "2019-09-12" @default.
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• W2971413315 date "2019-11-01" @default.
• W2971413315 modified "2023-09-26" @default.
• W2971413315 title "Comparison of PSA-density of the transition zone and whole gland for risk stratification of men with suspected prostate cancer: A retrospective MRI-cohort study" @default.
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• W2971413315 doi "https://doi.org/10.1016/j.ejrad.2019.108660" @default.
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