PMC3959945_01
(A) Echo-endoscopy showing dilated common bile duct containing a long linear triple-layer structure, two hyperechoic outside and one hypoechoic inside, without acoustic shadow characteristicof Ascaris lumbricoides (Beta) Endoscopic retrograde cholangiography showing the linear filling defect due to worm (C) Endoscopic view showing parasite coming out from papilla after the dormia basket is inserted in the common bile duct
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PMC3959945_01_AnnGastroenterol-26-165-g001.jpg
F1
Trans-duodenal study showed an 8 mm dilated common bile duct (CBD) containing a long linear triple-layer structure (Fig. 1A), hyperechoic outside and hypoechoic inside, without acoustic shadow. Endoscopic retrograde cholangiography showed the linear filling defect due to the worm in CBD (Fig. 1B). Sphincterotomy was performed to retrieve a 15-cm long parasite with the help of a Dormia basket (Fig. 1C).