Figure 6b. US images in a 61-year-old man with an elevated PSA level of 8.0 ng/mL and pathologic findings of prostatic adenocarcinoma (Gleason score, 8). (a) Transverse gray-scale US image reveals heterogeneous echotexture of the prostate. No focal abnormalities are noted. (b) Transverse color Doppler US image shows increased parenchymal flow (arrow) in the right apex of the prostate. (c) Sagittal color Doppler US image shows increased blood flow (arrow) in the right apex, which corresponds to tumor.