Document Detail

Pseudotumor of the distal common bile duct at endoscopic retrograde cholangiopancreatography.
MedLine Citation:
PMID:  21724120     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Prior studies have described a pseudocalculus appearance in the distal common bile duct as a normal variant at cholangiography. The objective of this study was to describe the occurrence of pseudotumor in the distal common bile duct at endoscopic retrograde cholangiopancreatography (ERCP).
METHODS: Nine patients who underwent ERCP between May 2004 and July 2008 were identified as having a transient eccentric mural-based filling defect in the distal common bile duct. A single reader systematically reviewed all studies and recorded the imaging findings.
RESULTS: The mean diameter of the filling defect was 9 mm (range, 5 to 11). Eight patients had resolution of the filling defect during the same ERCP or on a subsequent ERCP, and in two of these patients the inferior border of the filling defect was not well visualized. The other patient underwent surgical resection of a presumed tumor with no evidence of malignancy on surgical pathology.
CONCLUSION: An eccentric mural-based filling defect in the distal common bile duct can be artifactual in nature and may reflect transient contraction of the sphincter of Oddi. Recognition of this pseudotumor may help avoid unnecessary surgery.
Justin H Tan; Fergus V Coakley; Zhen J Wang; Liina Poder; Emily Webb; Benjamin M Yeh
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Clinical imaging     Volume:  35     ISSN:  1873-4499     ISO Abbreviation:  Clin Imaging     Publication Date:    2011 Jul-Aug
Date Detail:
Created Date:  2011-07-04     Completed Date:  2011-12-19     Revised Date:  2014-09-24    
Medline Journal Info:
Nlm Unique ID:  8911831     Medline TA:  Clin Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  279-83     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
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MeSH Terms
Cholangiopancreatography, Endoscopic Retrograde*
Common Bile Duct / pathology,  radiography*,  surgery
Middle Aged
Retrospective Studies
Sphincter of Oddi / pathology*
Grant Support
1 T32 EB001631/EB/NIBIB NIH HHS; T32 EB001631/EB/NIBIB NIH HHS; T32 EB001631-01A1/EB/NIBIB NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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