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Ano imperforado - Overview

Nombres alternativos

Malformación anorrectal; Atresia anal

Definición:

Es un defecto que está presente al nacer (congénito) que implica ausencia u obstrucción del orificio anal. El ano es la abertura hacia el recto a través de la cual las heces salen del cuerpo.

Causas:

El ano imperforado puede ocurrir de varias maneras:

  • El recto puede terminar en una bolsa ciega que no se conecta con el colon.
  • El recto puede tener aberturas hacia la uretra, la vejiga, la base del pene o el escroto en los niños o la vagina en las niñas.
  • Puede haber estrechamiento (estenosis) o ausencia del ano.

El problema es causado por el desarrollo anormal del feto. Muchas formas de ano imperforado ocurren con otras anomalías congénitas. Esta anomalía se presenta en más o menos 1 de cada 5,000 bebés.

  • Reviewed last on: 5/1/2011
  • Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

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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