Anorectal malformation; Anal atresia
Imperforate anus is a defect that is present from birth (congenital) in which the opening to the anus is missing or blocked. The anus is the opening to the rectum through which stools leave the body.
Imperforate anus may occur in several forms.
The problem is caused by abnormal development of the fetus. Many forms of imperforate anus occur with other birth defects. It occurs in about 1 out of 5,000 infants.
Warner BW. Pediatric surgery. In: Townsend CM, Beauchamp RD, Evers BM, Mattox KL, eds. Sabiston Textbook of Surgery. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 71.
Klein MD, Thomas RP. Surgical conditions of the rectum, anus, and colon. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 341.
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