Commmon bile duct stent (CBD stent)/ indwelling CBD stent

📄 SCRS

CBD Stant
Commmon bile duct stent

Commmon bile duct stent ultrasound case study

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Reporting Panel

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CBD Pathology

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Commmon bile duct stent ultrasound case study

CASE–1

Clinical History

A 58-year-old patient with a history of ERCP and common bile duct stent placement presented for follow-up ultrasound evaluation. The patient has a history of obstructive jaundice secondary to choledocholithiasis/biliary stricture. Ultrasound was performed to assess stent position and biliary dilatation.

Ultrasound Findings

Ultrasound examination demonstrates a linear echogenic tubular structure within the common bile duct, consistent with an indwelling CBD stent. The common bile duct measures approximately ____ mm in diameter. Mild residual intrahepatic biliary radicle dilatation may be present. No definite intraductal calculus is identified. The gallbladder is unremarkable/contains calculi as clinically applicable. No pericholecystic fluid or sonographic evidence of acute cholecystitis is seen.

The yellow arrows are indicating a linear echogenic structure within the extrahepatic common bile duct (CBD), consistent with an indwelling CBD stent.

Report Line

A linear echogenic tubular structure is visualized within the common bile duct, consistent with an indwelling CBD stent. The common bile duct measures approximately ____ mm in diameter. Mild residual intrahepatic biliary ductal dilatation is noted. No definite intraductal calculus or pericholecystic fluid is identified. Sonographic findings are consistent with CBD stent in situ.

Impression

Features are consistent with CBD stent in situ with mild residual biliary dilatation. No definite sonographic evidence of recurrent choledocholithiasis.

Recommendation

Clinical and laboratory correlation, including liver function tests, is recommended. Correlation with previous ERCP findings is advised. Follow-up with the treating gastroenterologist is recommended for assessment of stent patency and timely stent exchange or removal as clinically indicated. MRCP or repeat ERCP may be considered if recurrent biliary obstruction is suspected.

Key Learning Points

• A CBD stent appears as a linear echogenic tubular structure within the common bile duct on ultrasound.
• Stents are commonly placed during ERCP for biliary obstruction due to choledocholithiasis, benign strictures, or malignant obstruction.
• Mild residual common bile duct or intrahepatic biliary dilatation may persist after stent placement.
• Ultrasound is useful for assessing biliary dilatation and confirming the presence of a CBD stent but has limited ability to evaluate stent patency.
• Recurrent biliary dilatation, cholangitis, or jaundice should raise suspicion for stent occlusion or migration.
• MRCP or ERCP may be required when stent dysfunction is suspected.
• Plastic CBD stents require scheduled exchange or removal to reduce the risk of obstruction and infection.