Borderline common hepatic duct dilatation on sonogram

S. K. Chuah*, C. S. Changchien, K. W. Chiu, D. I. Tai, C. M. Lee

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review


Background: The use of ultrasonography to detect biliary tree dilatation is well documented, but the clinical relevance of borderline common hepatic duct (CHD) dilatation as seen on a sonogram is still obscure. The purpose of this study is to clarify this. Materials and Methods: Forty-two subjects with no previous history of biliary surgery and whose CHD diameter on sonography was in the range 5-6 mm in patients aged less than 50 years, and 7-8 mm in those aged 51 years and over, received endoscopic retrograde cholangiography (ERC). Results: Thirty-one patients (73.8%) had a dilated CHD on ERC: 12 had gallstones, seven had stones in either the CHD or common bile duct, seven had intrahepatic duct stones, three had malignancies in the pancreas or ampullary region, and two had no evidence of stone or mass. Of the 11 patients found on ERC to have a normal CHD diameter, seven had gallstones and four had normal biliary trees and gallbladder. Seventeen (54.8%) patients with both borderline CHD dilatation on sonography and abnormal biochemistry had a positive bile duct finding on ERC. Conclusion: Borderline CHD dilatation on sonography is clinically significant, particularly in patients with abnormal liver biochemistry. The major pathologic findings in this series were biliary stones.

Original languageEnglish
Pages (from-to)140-143
Number of pages4
JournalJournal of Medical Ultrasound
Issue number3
StatePublished - 1995
Externally publishedYes


  • borderline CHD dilatation
  • sonogram


Dive into the research topics of 'Borderline common hepatic duct dilatation on sonogram'. Together they form a unique fingerprint.

Cite this