Delabrousse et al reported a number of findings in an abdominal CT scan which can be used to identify a bezoar causing a small bowel obstruction (SBO). Small bowel obstruction is a common way for a bezoar to present. The authors are from CHU Jean Minjoz in Besancon, France.
Features of a bezoar causing small bowel obstruction:
(1) a well-defined ovoid mass with gas bubbles
(2) a lesion that looks similar in the stomach
(3) length < 10 cm (usually)
(4) encapsulating wall (presence of a high-attenuation boundary)
(5) "floating density debris" sign (presence of fat-density debris floating in the lumen of a dilated bowel proximal to the site of obstruction)
where:
• The region with the density of fat show HU readings from -50 to -150.
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