Hepatic abscess due to Eikenella corrodens and Streptococcus milleri: implications for antibiotic therapy

D Quinlivan1, T M Davis, F J Daly

  • 1University of Western Australia, Department of Medicine, Fremantle, Western Australia.

Insights

A rare intrahepatic abscess caused by Eikenella corrodens infection was identified. This bacterium is challenging to detect and may evade common antibiotic treatments for penicillin-allergic individuals.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Hepatology

Background:

  • Intrahepatic abscesses are serious liver infections.
  • Eikenella corrodens is an unusual pathogen in hepatic abscesses.
  • Accurate identification of causative agents is crucial for effective treatment.

Observation:

  • A case of intrahepatic abscess was observed.
  • The abscess was infected with Eikenella corrodens.
  • Eikenella corrodens presented diagnostic challenges.

Findings:

  • Eikenella corrodens was difficult to isolate from the abscess.
  • The organism is not typically covered by standard empirical antibiotic regimens for penicillin-allergic patients.
  • This highlights a potential gap in empirical treatment strategies.

Implications:

  • Clinicians should consider Eikenella corrodens in intrahepatic abscess cases, especially when standard cultures are negative or treatment fails.
  • Diagnostic laboratories should be aware of the fastidious nature of Eikenella corrodens.
  • Treatment guidelines for intrahepatic abscesses may need revision to include coverage for less common pathogens like Eikenella corrodens, particularly in specific patient populations.

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