Lab Med Online.  2018 Jan;8(1):34-38. 10.3343/lmo.2018.8.1.34.

A Case of Biliary Sepsis by Dysgonomonas capnocytophagoides

  • 1Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea.
  • 2Department of Laboratory Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea.
  • 3Division of Gastroenterology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.


Dysgonomonas capnocytophagoides is a gram-negative, facultatively anaerobic coccobacillus that was formerly designated CDC group dysgonic fermenter (DF)-3, occurring as a normal flora in human gut and rarely causing human infections such as bacteremia, abscess, diarrhea, and cholecystitis. In this study, we report a case of biliary sepsis caused by D. capnocytophagoides in a patient with biliary obstruction. A seventy four-year-old man, admitted to the hospital due to common bile-duct stone, also had cholangitis caused by D. capnocytophagoides and Enterococcus avium, which were isolated from his blood cultures. D. capnocytophagoides was initially identified as D. gadei by MALDI-TOF mass spectrometry, but later confirmed as D. capnocytophagoides by 16S rRNA gene sequencing. To the best of our knowledge, this is the first report of human infection by D. capnocytophagoides in Korea.


Dysgonomonas capnocytophagoides; Sepsis; Cholelithiasis
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