Advanced Imaging for the Early Diagnosis of Local Recurrence Prostate Cancer after Radical Prostatectomy
Figure 3
Multiparametric-MR images of a 71-year-old man with prostate-specific antigen progression (PSA serum value 0.6 ng/mL) after radical retropubic prostatectomy, with suspected local recurrence. (a) Axial T2-weighted fat saturated fast spin-echo image shows, on the zone previously occupied by the left seminal vesicle, a hyperintense solid nodular tissue (white arrow) compared to pelvic muscles, of about 7 mm in size. (b) Axial DWI image with a value of 1000 s/mm2 shows a focal area of restricted diffusion (white arrow) corresponding to the solid nodular tissue detected on T2-weighted image. (c) Axial Gradient-echo T1-weighted subtracted image showing a remarkable enhancement of the pathological tissue. All these findings are consistent with locoregional relapse. (d) ADC map reconstructed from images obtained at values of 0, 500, and 1000, where the ROI was plotted for the measurement of ADC values in order to assess the aggressiveness of the nodule.
