title: Ascaris in the common bile duct after endoscopic sphincterotomy.
mesh_terms: D014670:Ampulla of Vater / Q000601:surgery*; D001196:Ascariasis / Q000209:etiology*; D003137:Common Bile Duct Diseases / Q000209:etiology*; D004724:Endoscopy; D005260:Female; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications