Floating common bile duct stones. A cause of a false negative endoscopic retrograde cholangiogram.
Endoscopic retrograde cholangiography (ERC) is the "gold standard" for the preoperative diagnosis of choledocholithiasis. Air bubbles that can cause a false positive ERC are differentiated from stones by their response to gravitational maneuvers: bubbles rise while stones sink. We report a patient with round, floating common bile duct stones that mimicked air bubbles to be the reason for a false negative ERC.
Section of Gastroenterology, Northwestern University Medical School, Chicago, IL 60611.
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PL
Kamel
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Vanagunas
D002760:Cholangiopancreatography, Endoscopic Retrograde; D002784:Cholesterol / Q000032:analysis; D003951:Diagnostic Errors; D003973:Diatrizoate; D003974:Diatrizoate Meglumine; D004338:Drug Combinations; D005188:False Negative Reactions; D042882:Gallstones / Q000737:chemistry / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013046:Specific Gravity
D004338:Drug Combinations; D003973:Diatrizoate; D003974:Diatrizoate Meglumine; C027278:urovision; D002784:Cholesterol