Colon non tumor
Congenital anomalies
Atresia

Author: Hanni Gulwani, M.D. (see Authors page)

Revised: 13 December 2016, last major update March 2014

Copyright: (c) 2003-2016, PathologyOutlines.com, Inc.

PubMed Search: Colon[title]Atresia
Cite this page: Atresia. PathologyOutlines.com website. http://pathologyoutlines.com/topic/colonatresia.html. Accessed June 26th, 2017.
Definition / general
  • Imperforate mucosal diaphragm or stringlike segment of bowel
  • Very rare (1 per 20,000 live births)
  • Associated with other congenital anomalies, including Hirschsprung disease
  • May have genetic (J Pediatr Surg 2005;40:390) or vascular cause
  • Type 1: bowel and mesentery are intact, but bowel lumen is interrupted by a complete membrane
  • Type 2: bowel is discontinuous, connected by a fibrous cord
  • Type 3: bowel ends are completely separated and mesentery has a gap
Treatment
Clinical images

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Type I atresia: mucosal septum

Atresia with hugely distended cecum

Atresia Type I

Gross images

Images hosted on Flickr:

Congenital pouch colon: 10 day old baby boy admitted with abdominal distension and absent anal opening

Microscopic (histologic) images

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Congenital pouch colon: 10 day old baby boy admitted with abdominal distension and absent anal opening