Normal value of prostate section

Many people often encounter problems related to the prostate. Some people need to undergo prostate examinations. In fact, when people get older, clinical examinations are very meaningful in order to avoid prostate diseases. The normal value of the prostate cross-section must be determined based on multiple examinations, which is not something we can know at home.

Normal value

The prostate is a reproductive gland that surrounds the prostatic urethra. The normal cross-sectional area is about 4 cm, the longitudinal diameter is about 3 cm, and the thickness is about 2 cm. The cross-sectional area is a symmetrical and blunt triangle, which is larger at the top and smaller at the bottom. The prostate capsule is smooth, continuous and relatively thin, and the substance is hypoechoic, with evenly distributed small light spots.

Clinical significance

Abnormal results:

(1) Prostatic hyperplasia: Ultrasound images show that the prostate is enlarged, mainly in the anterior-posterior diameter, and loses its normal shape, becoming hemispherical or nearly spherical. The gland has a regular shape, symmetrical left and right, and neat edges. The capsule may be thickened, but the connection is intact. The internal echo increases and is basically evenly distributed. Enlargement of the middle lobe may be accompanied by urinary retention and residual urine.

(2) Prostate cancer: Ultrasound images show that the prostate is deformed, enlarged, asymmetrical, irregular, incomplete, and has a broken capsule with no continuity. The internal echo is disordered and uneven, with local light spots, spots, or groups, and some have focal low-echo areas. In some cases, when the bladder or seminal vesicle is involved, corresponding abnormal ultrasound images may appear.

(3) Chronic prostatitis: The size of the gland does not change much, it may be slightly larger or smaller. The sonogram is symmetrical chestnut or half-moon shaped. The capsule echo thickens with the progression of inflammation, and the thickness is uneven, but generally it still maintains its integrity and continuity. The internal echo increases, and the light spots vary in size and are unevenly distributed.

(4) Prostate stones:

① Scattered small stones: The prostate is of normal size, with multiple scattered strong echoes, with a diameter of 1-3cm and no acoustic shadows.

② Arc-shaped stones: They are all accompanied by prostatic hyperplasia. The stones appear at the junction of the internal and external glands. Many small stones are arranged in an arc shape. Most of them have no sound shadow. Sound shadows will only appear when the stones are large, densely gathered or contain a lot of calcium. Arc-shaped stones are easier to show in a rectal longitudinal scan.

③ Small stones in piles: usually accompanied by prostatic hyperplasia. Dozens of small stones with strong echoes gather in piles, which are often seen near the tip of the prostate in the longitudinal section.