Hirschsprung's disease other imaging findings: Difference between revisions
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==Other Imaging Findings== | ==Other Imaging Findings== | ||
===Barium Enema=== | ===Barium Enema=== | ||
Barium enema findings suggestive of Hirschsprung's disease include: | |||
* Radiography performed in children with Hirschsprung disease yields findings similar to those in other forms of low small bowel obstruction: variable gaseous distention of the colon and small bowel, often with air-fluid levels. | * Radiography performed in children with Hirschsprung disease yields findings similar to those in other forms of low [[small bowel obstruction]]: variable gaseous distention of the [[Colon (anatomy)|colon]] and [[small bowel]], often with air-fluid levels. | ||
* The colon is usually difficult to identify accurately, and gas is usually absent in the rectum. | * The [[Colon (anatomy)|colon]] is usually difficult to identify accurately, and gas is usually absent in the [[rectum]]. | ||
* Barium enema studies demonstrate patency of the colon, which is short but usually normal in caliber. | * [[Barium enema]] studies demonstrate patency of the [[Colon (anatomy)|colon]], which is short but usually normal in caliber. | ||
* A transition zone between the narrow and dilated portions of the colon in the shape of an inverted cone is the most characteristic radiologic finding. | * A transition zone between the narrow and dilated portions of the colon in the shape of an inverted cone is the most characteristic radiologic finding. | ||
* When this transition zone is observed, the examination should be discontinued because filling of the more proximal dilated bowel beyond the transition zone may lead to impaction. | * When this transition zone is observed, the examination should be discontinued because filling of the more proximal dilated bowel beyond the transition zone may lead to impaction. |
Revision as of 22:09, 15 June 2017
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
A barium enema is the mainstay of diagnosis of Hirschsprung’s disease.
Other Imaging Findings
Barium Enema
Barium enema findings suggestive of Hirschsprung's disease include:
- Radiography performed in children with Hirschsprung disease yields findings similar to those in other forms of low small bowel obstruction: variable gaseous distention of the colon and small bowel, often with air-fluid levels.
- The colon is usually difficult to identify accurately, and gas is usually absent in the rectum.
- Barium enema studies demonstrate patency of the colon, which is short but usually normal in caliber.
- A transition zone between the narrow and dilated portions of the colon in the shape of an inverted cone is the most characteristic radiologic finding.
- When this transition zone is observed, the examination should be discontinued because filling of the more proximal dilated bowel beyond the transition zone may lead to impaction.
- The radiologic diagnosis of total colonic aganglionosis is difficult. Findings at barium enema examination may be normal or may include a short colon of normal caliber, microcolon, or a transition zone in the ileum.