In the early stages of prostate cancer, hypoechoic nodules can be seen in the peripheral zone of the prostate, and the borders of the lesions are mostly indistinct. In the case of progressive prostate cancer, the mass is often irregular and lobulated, the prostate peritoneum is incomplete, the echogenic continuity is interrupted, and the local blood flow is often increased. If the adjacent organs are involved, it can also be seen on ultrasound, such as the irregular thickening of the bladder neck and the echogenicity of the mass in the cysto-rectal fossa. The actual prostate cancer can be diagnosed only if the prostate gland is biopsied and sent for pathological examination.