Male pelvis rule 2 : Benign prostatic hypertrophy

Gray scale ultrasound images of the bladder in sagittal (1) and transverse (2) show an enlarged prostate gland creating a bulge in the bladder base (arrows) representing prostatic enlargement. There are no specific findings of carcinoma on ultrasound or CT. Biopsy or MR spectroscopy can be performed for evaluation of prostate carcinoma

Unenhanced (1) and delayed images of pelvis following contrast administration (2) in the excretory phase shows an ill-defined bladder mass at the bladder base (arrows). Following excretion of contrast into the bladder, the mass is well seen because it is outlined by the excreted contrast (M). This mass is seen to arise from the prostate gland (P).