Perineal urethrostomy is a surgical procedure that is performed on males to create a permanent opening into the urethra through an incision in the skin of the perineum. The perineum is the area of skin between the scrotum and the anus. The urethra is the tube like structure through which urine passes from the bladder through the penis to exit the body.
Urine stored in the bladder normally passes through the urethra and flows out of the opening at the end of the penis during urination. However, infection, injury, or previous surgery may cause scarring of the urethra. This may result in a narrowing of the urethra, which is known as a urethral stricture. It can cause the flow of urine to become partially or completely blocked.
A perineal urethrostomy may be done in cases where a patient has had other types of surgery to address a urethral stricture without success. It is considered in cases where the urethra cannot be repaired to allow voiding through the end of the penis. After the new opening for urine to pass is created, males urinate in a seated position since urine will flow out of the body through the opening that is made in the perineum.
The procedure may also be an option for older men with anterior urethral strictures who prefer not to undergo extensive reconstructive urethral surgery.