Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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A Case of Fasciola hepatica Infection Mimicking Cholangiocarcinoma and ITS-1 Sequencing of the Worm

  • Kang, Bong Kyun (Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital) ;
  • Jung, Bong-Kwang (Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine) ;
  • Lee, Yoon Suk (Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital) ;
  • Hwang, In Kyeom (Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital) ;
  • Lim, Hyemi (Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine) ;
  • Cho, Jaeeun (Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine) ;
  • Hwang, Jin-Hyeok (Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital) ;
  • Chai, Jong-Yil (Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine)
  • Received : 2013.12.26
  • Accepted : 2014.02.20
  • Published : 2014.04.30
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Abstract

Fascioliasis is a zoonotic infection caused by Fasciola hepatica or Fasciola gigantica. We report an 87-year-old Korean male patient with postprandial abdominal pain and discomfort due to F. hepatica infection who was diagnosed and managed by endoscopic retrograde cholangiopancreatography (ERCP) with extraction of 2 worms. At his first visit to the hospital, a gallbladder stone was suspected. CT and magnetic retrograde cholangiopancreatography (MRCP) showed an intraductal mass in the common bile duct (CBD) without proximal duct dilatation. Based on radiological findings, the presumed diagnosis was intraductal cholangiocarcinoma. However, in ERCP which was performed for biliary decompression and tissue diagnosis, movable materials were detected in the CBD. Using a basket, 2 living leaf-like parasites were removed. The worms were morphologically compatible with F. hepatica. To rule out the possibility of the worms to be another morphologically close species, in particular F. gigantica, 1 specimen was processed for genetic analysis of its ITS-1 region. The results showed that the present worms were genetically identical (100%) with F. hepatica but different from F. gigantica.

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References

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