Wild rice plants were grown at peripheral zone of the pond.
a Axial T2-weighted fast spin-echo image (5045/110), b axial T2-weighted fat saturated fast spin-echo image (45461/116) and c coronal T2-weighted fast spin-echo image (5565/120) showing a round sharply defined nodule of low signal intensity surrounded by a pseudocapsule in the peripheral zone of the prostate at the right peri-apical location.
Investigating the role of DCE-MRI, over T2 and DWI, in accurate PI-RADS v2 assessment of clinically significant peripheral zone prostate lesions as defined at radical prostatectomy.
Niaf et al. compared nonlinear SVM, linear discriminant analysis, k-nearest neighbors, and naïve Bayes classifiers to determine an optimal CADx scheme to differentiate malignant tissue from suspicious or nonmalignant tissue at the peripheral zone [ 19].
The yellow areas (b) correspond to the protrusion of a large adenoma in the peripheral zone (moustache-sign like), as confirmed at final histology, after radical prostatectomy (c).
At histologic examination, the peripheral zone corresponded to repopulating hematopoietic marrow and the central zone to marrow fat.
It is noteworthy that bax, bin1, mdm2, p21, and p65 NFkB were all expressed at significantly higher levels in peripheral zone tumors compared to transition zone tumors of equivalent Gleason score.
but the S w was higher in these cases, 2.6 D and 0.5 D maximum, respectively; a reason for this finding could be the difficulty to determinate the local radius of curvature at each point in the peripheral zone diameter.
Open image in new window Fig. 7 Axial T2-weighted image (a) that shows a hypointense area at the prostate base, in the peripheral zone.
These findings suggest a suspicious lesion in the left peripheral zone (cancer in moustache sign), and this was confirmed at final histology after radical prostatectomy (GS = Gleason score 4 + 4) (d).
