What is the cause of urethral diverticulum?

summary

Urethral diverticulum refers to the cystic space around the urethra. There are two types of urethral diverticula: congenital and acquired. Most of the urethral diverticula are female, most of them are single, located between urethra and vagina; In men, it is located in the ventral side of urethra at the junction of penis and scrotum. Different diverticulum size and neck width lead to different degrees and symptoms of urinary tract obstruction. What is the cause of urethral diverticulum? Let's talk about it

What is the cause of urethral diverticulum?

Congenital dysplasia of urethral cavernous body: the ventral tissue of urethra is weak, the pressure of urine flow makes the anterior wall expand and protrude, forming diverticulum. Urethral sulcus is not fused: like hypospadias, urethral wall is partially defective, but the surrounding tissue is well developed, forming diverticulum.

Urethral stricture often occurs at the distal end of diverticulum: therefore, the role of urethral stricture at the distal end of Campbell's diverticulum in the formation of diverticulum. If the distal urethral stricture is accompanied by a double urethra and the top is a blind tube, the accessory urethra will gradually expand to form a diverticulum. Shintaku (1996) reported a case of congenital anterior urethral diverticulum caused by Cowper duct dilatation.

Periurethral abscess: periurethral abscess penetrates the urethra and forms diverticulum. The pathogen was gram-negative bacilli mixed infection. Schistosomiasis was reported in Egypt. Diverticula located in the prostate, mostly caused by prostatic abscess, clinical more common.

matters needing attention

If the diverticulum is small, the urethra should be sutured after resection; Cecil urethroplasty was performed to repair the defect of urethra. If the diverticulum is difficult to be resected, most of the diverticulum should be resected and the remaining part should be sutured.