Prostate stones

Introduction Prostatic stones refer to stones formed in prostate tissue or acinus. Mostly deposited from calcium salts and phosphates contained in normal prostatic fluid, infection can promote the formation of certain stones. Most patients have no specific symptoms, often manifested as benign prostatic hyperplasia, urethral stricture or chronic prostatitis. Some small stones can be excreted with the urine. Some patients may experience pain in the lumbosacral, perineal or penile areas. Some have sexual dysfunction. Patients with prostate abscess may have pain in the deep part of the perineum and scrotum, aggravation of stool, accompanied by fever and systemic symptoms, and obvious tenderness of the prostate.

Cause

(1) Causes of the disease

It is currently believed that gland blockage associated with prostate gland hyperplasia is a major predisposing factor for stone formation. According to the different components of the prostate stone, it is divided into endogenous stones and exogenous stones. The former is mainly from prostatic fluid, and the latter is mainly from urine.

(two) pathogenesis

The formation of exogenous stones is related to the reflux of urine in the prostate. The stones are often accompanied by focal chronic inflammation of the prostate. There is a round cell infiltration. The acinus is filled with shed epithelial cells and debris. The larger the stone, the prostate tube and acinus may expand, and there are cysts around it. There is no epithelial cell coverage, and there is round cell infiltration and fibrosis between the acinus. The number of prostatic stones is variable, ranging from one to more than a few hundred, often multiple. The size is 1~4mm, and some can reach 1cm, which is brown round or oval. The surface of the small stone is smooth, and the multiple stones are polyhedral.

an examination

Related inspection

Male reproductive line X-ray examination for rectal examination

Straight bladder urethroscopic examination only shows swelling of the prostatic urethra, sometimes when passing through the prostate urethra, there is a sense of friction. At this time, rectal examination can produce squeaking sounds (large and multiple stones) and small stones can protrude into the urethra.

X-ray inspection has three kinds of performance:

1. Dense and dense shadows in the prostate.

2. A horseshoe-shaped or circular shadow centered on the urethra.

3. Isolated stones or the entire prostate is occupied by stones.

Differential diagnosis

Differential diagnosis of prostatic stones:

1, prostate calcification: prostate calcification, fibrosis, is the scar left after inflammation of the prostate, is a precursor to prostate stones. Prostatic calculi are often accompanied by chronic prostatitis, which is usually seen by B-ultrasound. Due to the specific structure of the prostate, there is generally no good treatment for calcification and stones. Prostate calcification (fibrosis), stones will breed bacteria, so it is a cause of recurrent prostatitis, can not be ignored.

2, prostate induration: When the rectal examination finds the induration of the prostate, it is usually suspected of a cancerous lesion of the prostate. Prostate tuberculosis, granulomatous prostatitis, etc. may also have symptoms of prostate lumps.

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