Ultrasound appearances of intra- and extrahepatic biliary ascariasis

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dc.contributor.authorSchulman A.
dc.date.accessioned2011-05-15T16:15:11Z
dc.date.available2011-05-15T16:15:11Z
dc.date.issued1998
dc.description.abstractBackground: To determine the range of ultrasonographic (US) appearances of Ascaris lumbricoides roundworms in the biliary system, their distribution in the intra- and extrahepatic parts of the system, and associated features. Methods: All cases of biliary ascariasis during a 10-year period were reviewed. There were 42 cases in which diagnosis was based on established US criteria, and 2 cases diagnosed surgically in which US had been negative. These 44 cases occurred in 36 patients. Results: In the US-diagnosed cases, worms were present in intrahepatic ducts in 32 cases, in the main duct in 37, and in the gallbladder in eight. In six cases, the liver was lifted off the main portal vein by a bundle of worms obliterating the lumen of the main bile duct. Worms packing and dilating intrahepatic ducts produced pseudotumorous appearances in the liver in four cases and bundlelike appearances in three. Worms were also seen in the pancreatic duct in two cases. Stones in intrahepatic ducts were present in 12 patients. Conclusion: Biliary ascariasis should be searched for inside and outside the liver. The appearances of bundles and boluses are different from those of single worms. Intra- and extrahepatic biliary stones may be present.
dc.description.versionArticle
dc.identifier.citationAbdominal Imaging
dc.identifier.citation23
dc.identifier.citation1
dc.identifier.issn09428925
dc.identifier.other10.1007/s002619900286
dc.identifier.urihttp://hdl.handle.net/10019.1/13231
dc.subjectadolescent
dc.subjectadult
dc.subjectarticle
dc.subjectascariasis
dc.subjectascaris lumbricoides
dc.subjectbile duct stone
dc.subjectbiliary tract disease
dc.subjectchild
dc.subjectclinical article
dc.subjectechography
dc.subjecthuman
dc.subjectpriority journal
dc.subjectAdolescent
dc.subjectAdult
dc.subjectAnimals
dc.subjectAscariasis
dc.subjectAscaris lumbricoides
dc.subjectBile Duct Diseases
dc.subjectBile Ducts, Extrahepatic
dc.subjectBile Ducts, Intrahepatic
dc.subjectChild
dc.subjectChild, Preschool
dc.subjectCholelithiasis
dc.subjectDiagnosis, Differential
dc.subjectFollow-Up Studies
dc.subjectHumans
dc.subjectMiddle Aged
dc.subjectPancreatic Ducts
dc.subjectRetrospective Studies
dc.titleUltrasound appearances of intra- and extrahepatic biliary ascariasis
dc.typeArticle
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