Korean J Gastrointest Endosc.  2011 Jun;42(6):442-445.

A Case of Biliary Ascariasis with Duodenal Stenosis

• Park KJ
• Chung CY
• Song YA
• Kim SH
• Park CS
• Cho SB
• Lee WS
• Joo YE

Abstract

Infestation with Ascaris lumbricoides is one of the most common helminthic diseases in humans. The highly motile mature worm can cause intestinal obstructions, pancreaticobiliary diseases, appendicitis, and peritonitis. However, biliary ascariasis associated with duodenal stenosis is extremely rare. We report a case of biliary ascariasis with duodenal stenosis in a 70-year-old man. The patient was admitted to our hospital with a 2 month history of epigastric pain and vomiting. An esophagogastroduodenoscopy showed stenosis of the second portion of the duodenum and an impacted living round worm in the ampulla of Vater. The round worm was extracted with a snare without any complications, and the patient received albendazole treatment. A pathological examination of the stenotic portion of the biopsy specimen revealed chronic inflammation with eosinophilic infiltration throughout the mucosa. The patient remained asymptomatic at a follow-up examination. Duodenal stenosis should be considered in the complications of ascariasis, particularly in areas where this parasitic infestation is endemic.

Keyword

Duodenal stenosis; Ascaris lumbricoides

MeSH Terms

Aged
Albendazole
Ampulla of Vater
Appendicitis
Ascariasis
Ascaris lumbricoides
Biopsy
Constriction, Pathologic
Duodenal Obstruction
Duodenum
Endoscopy, Digestive System
Eosinophils
Follow-Up Studies
Helminths
Humans
Inflammation
Intestinal Obstruction
Mucous Membrane
Peritonitis
SNARE Proteins
Vomiting
Albendazole
Duodenal Obstruction
SNARE Proteins