WES sign: Difference between revisions
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==Background== | ==Background== | ||
*"Wall Echo Shadow" (WES) sign | |||
*Consists of two parallel hyperechoenic lines (Wall) separated by a hypoechoic space (Echo), and distal shadowing (Shadow) from the gallstone. | |||
**Typically observed in patients with a contracted gallbladder around a single large gallstone | |||
**Patients with multiple gallstones can also produce the finding if the gallbladder is contracted around them | |||
**Can also be seen in a "porcelain gallbladder" | |||
*The WES sign can distinguish a gallstone from a loop of bowel when the entirety of the gallbladder is not visible due to the large shadowing.<ref>Rybicki FJ. The WES sign. Radiology. 2000;214 (3): 881-2[http://pubs.rsna.org/doi/pdf/10.1148/radiology.214.3.r00mr38881 PDF]</ref><ref>Macdonald F. et al. The WES triad - a specific sonographic sign of gallstones in the contracted gallbladder. Gastrointest Radiol. 1981;6 (1): 39-41</ref> | |||
==Images== | ==Images== | ||
[[File:Wes sign.JPG|300px|"Wall Echo Shadow" (WES Sign) Non-obstructing gallstones within a contracted gallbladder]] | [[File:Wes sign.JPG|300px|"Wall Echo Shadow" (WES Sign) Non-obstructing gallstones within a contracted gallbladder]] | ||
== | ==See Also== | ||
*[[Biliary ultrasound]] | |||
[[Category:Ultrasound]] | |||
== | ==References== | ||
<references/> | <references/> | ||
[[Category: | |||
[[Category:Radiology]] | |||
[[Category:GI]] | |||
Latest revision as of 16:54, 30 September 2019
Background
- "Wall Echo Shadow" (WES) sign
- Consists of two parallel hyperechoenic lines (Wall) separated by a hypoechoic space (Echo), and distal shadowing (Shadow) from the gallstone.
- Typically observed in patients with a contracted gallbladder around a single large gallstone
- Patients with multiple gallstones can also produce the finding if the gallbladder is contracted around them
- Can also be seen in a "porcelain gallbladder"
- The WES sign can distinguish a gallstone from a loop of bowel when the entirety of the gallbladder is not visible due to the large shadowing.[1][2]
Images
