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Imperforate anus Causes and Risks:
Imperforate anus is a malformation of the anorectal region that may occur in several forms. The rectum may end in a blind pouch that does not connect with the colon, or it may have openings to the urethra, bladder, or vagina . A condition of
stenosis, or narrowing of the anus, or absence of the anus may be present.
The malformations are caused by abnormal development of the fetus, and many are associated with other congenital defects. Imperforate anus is a relatively common congenital malformation that occurs in about 1 out of 5,000 infants.
Prevention:
As with most birth defects, there is no known prevention.
Symptoms:
- absence of anal opening
- misplaced anal opening
- anal opening very near the vaginal opening in the female
- no passage of first stool within 24 to 48 hours after birth
- stool passed by way of vagina or urethra
- abdominal distention
- vomiting if infant is fed
Signs and Tests:
A physical examination with check for anal patency in the newborn will show the malformation.
A lower abdominal X-ray may be recommended.
Treatment:
Surgical reconstruction of the anus is required. If the rectum connects with other organs, repair of these organs will also be necessary.
Prognosis:
The outcome is good with treatment. Some affected infants may never develop adequate bowel control depending on the location of the defect.
Complications:
Call Your Healthcare Provider:
This disorder is usually discovered when the newborn infant is first examined. Call your health care provider if a child that was treated for imperforate anus develops abdominal pain , or fails to develop any bowel control by the age of 3.
This illustration shows the major organs of the digestive system. Their relative sizes and positioning in the body are also demonstrated.
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