Difference between revisions of "Megacolon"

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==Description==
 
==Description==
  
*Occurs in cats, dogs, and pigs.
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Megacolon is a state of permanently increased diameter of the large bowel. This change in intestinal structure leads to abnormal function, including reduced colonic motility and chronic constipation. The condition most commonly occurs in cats and dogs, but pigs can also be afffected. White foals suffering congenital colonic agangliosis, an autosomal recessive trait, may develop secondary megacolon.
*May be due to a lack of myenteric plexuses that occurs when  neuroblasts fail to migrate from the nerual crest to the colorectal myenteric plexuses.
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*Congenital colonic agangliosis, a condition occurring in white foals, can lead to megacolon.  It is thought to be an autosomal recessive condition.
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The etiology of megacolon often remains undiagnosed
http://w3.vet.cornell.edu/nst/nst.asp?Fun=Display&imgID=632 megacolon
 
  
megacolon, likely caused by a lesion of the neuromuscular bed of the colon.
 
The etiology of megacolon often remains undiagnosed
 
 
==Signalment==
 
==Signalment==
 
==Diagnosis==
 
==Diagnosis==

Revision as of 09:27, 11 August 2010

Description

Megacolon is a state of permanently increased diameter of the large bowel. This change in intestinal structure leads to abnormal function, including reduced colonic motility and chronic constipation. The condition most commonly occurs in cats and dogs, but pigs can also be afffected. White foals suffering congenital colonic agangliosis, an autosomal recessive trait, may develop secondary megacolon.

The etiology of megacolon often remains undiagnosed

Signalment

Diagnosis

Clinical Signs

Laboratory Tests

Diagnostic Imaging

Pathology

Treatment

Prognosis

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References