Ascaris-mimicking common bile duct stone: A case report  

作　　者：Seo-Youn Choi Ha Eun Jo Yun Nah Lee Ji Eun Lee Min Hee Lee San ghyeok Lim Boem Ha Yi 

机构地区：[1]Radiology,Soonchunhyang University Hospital,Bucheon,Bucheon 14584,South Korea [2]Digestive disease center and research institute,Soonchunhyang University Hospital,Bucheon,Bucheon 14584,South Korea

出　　处：《World Journal of Clinical Cases》2020年第19期4499-4504,共6页世界临床病例杂志

基　　金：Soonchunhyang University Research Fund,No.20200019.

摘　　要：BACKGROUND In most cases,it is not difficult to differentiate common bile duct(CBD)stone from Ascaris infection because they are different disease entities and have different imaging findings.The two diseases usually demonstrate unique characteristic findings on computed tomography or magnetic resonance cholangiopancreatography.However,we report a rare case from our experience in which a CBD stone mimicked and was misdiagnosed as Ascaris.CASE SUMMARY A 72-year-old male presented with elevated serum liver enzymes.Computed tomography showed a hyper-attenuated,elongated lesion in the CBD lumen and associated biliary inflammation.Magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography revealed a linear filling defect in the bile duct.Moreover,elongated echogenic material with a central hypoechogenic area was seen on endoscopic ultrasound.Although the imaging findings caused us to suspect infection with the nematode Ascaris,the lesion was revealed to be a dark-brown-colored CBD stone through endoscopic extraction.CONCLUSION We report a rare case of a CBD stone that mimicked Ascaris.We also review the literature for side-by-side comparisons of the imaging features of CBD stones and ascariasis.

关 键 词：Case report Common bile duct GALLSTONES ASCARIS ASCARIASIS Multidetector computed tomography Magnetic resonance cholangiopancreatography 

分 类 号：R575.7[医药卫生—消化系统]