PMID: 9437065Mar 28, 1998Paper

Ultrasound appearances of intra- and extrahepatic biliary ascariasis

Abdominal Imaging
A Schulman

Abstract

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. 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. 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. 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.

Citations

Apr 1, 1999·The Journal of Alternative and Complementary Medicine : Research on Paradigm, Practice, and Policy·D L Diehl
Mar 14, 2000·Radiology·R O Bude, R A Bowerman
Sep 14, 2012·Case Reports in Surgery·Umesh JethwaniVipul Kandwal
Jan 17, 2004·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Jung Kyu RyuJong Sun Choi
Sep 28, 2016·World Journal of Gastroenterology : WJG·Mohammad S KhurooMehnaaz S Khuroo
Jun 15, 2007·Annals of Saudi Medicine·Mohammad Al AbsiAli Hamoud Al-Wadan
Mar 24, 2021·Arab Journal of Gastroenterology : the Official Publication of the Pan-Arab Association of Gastroenterology·Partha Sarathi PatraGopal Krishna Dhali

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