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Exstrophy of the bladder is a complex combination of disorders that occurs during fetal development. The disorder usually involves many systems in the body, including the urinary tract, skeletal muscles and bones, and the digestive system. Bladder exstrophy means that the bladder is essentially inside out and exposed on the outside of the abdomen. Because the bladder and other structures are exposed to the outside of the body, urine constantly trickles onto the skin causing local irritation.
Epispadias is usually seen with exstrophy of the bladder. Epispadias occurs when the urethral opening, which is the hollow tube that drains urine from the bladder to the outside of the body, is in an abnormal location. In males, the opening is usually on the topside of the penis and not the tip. This is different than hypospadias where the opening is usually underneath the penis. In girls, the urethral opening may be positioned further up the urethra and may be bigger and longer than normal. Often in girls, the opening extends to the bladder.
According to the American Urologic Association, this is a rare disorder that occurs in about 2.07 in every 100,000 births. It is slightly more common in males and varies in severity. The cause of exstrophy of the bladder is unknown. Although some reports show a clustering of exstrophy of the bladder in families, suggesting an inherited factor. However, the chance for parents to have another child with exstrophy of the bladder is small (1% or less). The disorder may occur in varying degrees from mild to severe. In many cases, exstrophy of the bladder is associated with the following:
Widened pubic bones
Outwardly rotated legs and feet
Triangle-shaped defect in the abdomen and visibility of the membrane of the bladder that is usually bright pink
Abnormally-shaped abdominal muscles
Displacement of the umbilicus (belly button), usually above the defect
Umbilical hernia may be present (section of intestine protrudes through a weakness in the abdominal muscles)
Short, small penis with urethral opening along top of penis (epispadias)
Narrow vaginal opening, wide labia, and short urethra
Exstrophy of the bladder can usually be diagnosed by fetal ultrasound before an infant is born. After the infant is born, exstrophy can be determined by physical exam. Your child's doctor may order other tests.
Your baby’s health care provider will figure out the best treatment for based on:
How old your baby is
His or her overall health and medical history
How sick he or she is
How well your baby can handle specific medications, procedures, or therapies
How long the condition is expected to last
Your opinion or preference
After a diagnosis is made, your child will be referred to a surgeon for surgical repair. There are usually three stages to the surgical repair that start when your child is as young as 48 hours old. The first stage involves internalization of the bladder and closing the abdomen. The second stage may be done as early as 6 months of age and involves repairing the epispadias and other genital abnormalities. The final surgery is done at around age 4 to 5, when the bladder is large enough and the child is psychologically ready to be dry. This final surgery involves reconstruction of the urinary tract including the bladder, and other structures of the urinary tract.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.