Pyloric stenosis other imaging findings: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 10: | Line 10: | ||
*The pyloric canal is outlined by a string of contrast material coursing through the mucosal interstices, termed the '''string sign'''; or by several linear tracts of contrast material separated by the intervening mucosa. The latter is termed the '''double-track sign'''. This sign demonstrates the intervening redundant mucosa outlined as a filling defect by the contrast material. | *The pyloric canal is outlined by a string of contrast material coursing through the mucosal interstices, termed the '''string sign'''; or by several linear tracts of contrast material separated by the intervening mucosa. The latter is termed the '''double-track sign'''. This sign demonstrates the intervening redundant mucosa outlined as a filling defect by the contrast material. | ||
*UGI is performed with the infant in the right anterior oblique position, to facilitate gastric emptying. | *UGI is performed with the infant in the right anterior oblique position, to facilitate gastric emptying. | ||
*Fluoroscopic observations include vigorous active peristalsis resembling a caterpillar and coming to an abrupt stop at the pyloric antrum, outlining the external thickened muscle as an extrinsic impression, termed the '''shoulder sign'''. | *[[Fluoroscopy|Fluoroscopic]] observations include vigorous active peristalsis resembling a caterpillar and coming to an abrupt stop at the pyloric antrum, outlining the external thickened muscle as an extrinsic impression, termed the '''shoulder sign'''. | ||
*Luminal barium may be transiently trapped between the peristaltic wave and the muscle, and this is termed the '''tit sign'''. | *Luminal barium may be transiently trapped between the peristaltic wave and the muscle, and this is termed the '''tit sign'''. | ||
*Eventual success of gastric peristaltic activity will propel contrast material through the pyloric mucosal interstices, with the appearance as either the string sign or the double-track sign, although at times more than one layer of contrast material may be appreciated in the mucosal filling defect. | *Eventual success of gastric peristaltic activity will propel contrast material through the pyloric mucosal interstices, with the appearance as either the string sign or the double-track sign, although at times more than one layer of contrast material may be appreciated in the mucosal filling defect. | ||
Revision as of 19:26, 13 November 2017
|
Pyloric stenosis Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Pyloric stenosis other imaging findings On the Web |
|
American Roentgen Ray Society Images of Pyloric stenosis other imaging findings |
|
Risk calculators and risk factors for Pyloric stenosis other imaging findings |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Mohamadmostafa Jahansouz M.D.[2]
Overview
Other Imaging Findings
Upper GI Series
- The pyloric canal is outlined by a string of contrast material coursing through the mucosal interstices, termed the string sign; or by several linear tracts of contrast material separated by the intervening mucosa. The latter is termed the double-track sign. This sign demonstrates the intervening redundant mucosa outlined as a filling defect by the contrast material.
- UGI is performed with the infant in the right anterior oblique position, to facilitate gastric emptying.
- Fluoroscopic observations include vigorous active peristalsis resembling a caterpillar and coming to an abrupt stop at the pyloric antrum, outlining the external thickened muscle as an extrinsic impression, termed the shoulder sign.
- Luminal barium may be transiently trapped between the peristaltic wave and the muscle, and this is termed the tit sign.
- Eventual success of gastric peristaltic activity will propel contrast material through the pyloric mucosal interstices, with the appearance as either the string sign or the double-track sign, although at times more than one layer of contrast material may be appreciated in the mucosal filling defect.
(Images courtesy of RadsWiki)
Nuclear Scanning
- Nuclear medicine scanning is not routinely used for hypertrophic pyloric stenosis; however, possible findings include delayed gastric emptying.