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Clinical and bacteriological characteristics of pyogenic liver abscess in non-diabetic patients

Han-Chuan Chuang1, Te-Li Chen, Dung-Hung Chiang

  • 1Department of Internal Medicine, Taipei Veterans General Hospital, Taiwan.

Journal of Microbiology, Immunology, and Infection = Wei Mian Yu Gan Ran Za Zhi
|February 26, 2010
PubMed
Abstract

Insights

In non-diabetic patients, pyogenic liver abscess (PLA) caused by Klebsiella pneumoniae differs from other pathogens. Non-K. pneumoniae PLA is linked to malignancy, highlighting the need for cancer screening in these patients.

Area of Science:

  • Hepatology
  • Infectious Diseases
  • Oncology

Background:

  • Diabetes mellitus is a known risk factor for Klebsiella pneumoniae liver abscess.
  • However, many patients with pyogenic liver abscess (PLA) do not have diabetes.
  • This study focuses on non-diabetic individuals to understand PLA causes beyond diabetes.

Purpose of the Study:

  • To compare clinical characteristics and prognostic factors of K. pneumoniae PLA with PLA caused by other organisms in non-diabetic patients.
  • To identify risk factors specific to non-K. pneumoniae PLA in a non-diabetic population.

Main Methods:

  • Retrospective review of medical charts for PLA patients from January 2005 to December 2007.
  • Analysis of clinical symptoms, laboratory data, and risk factors.
  • Comparison between K. pneumoniae and non-K. pneumoniae PLA groups.

Main Results:

  • No significant difference in clinical presentation between K. pneumoniae and non-K. pneumoniae PLA groups.
  • Non-K. pneumoniae PLA showed a higher prevalence of malignancy (58.8% vs 6.0%) and association with hepatobiliary tumors.
  • Escherichia coli was the most common non-K. pneumoniae pathogen; K. pneumoniae isolates were largely susceptible to tested antibiotics, unlike resistant non-K. pneumoniae Gram-negative pathogens.

Conclusions:

  • Hepatobiliary malignancy and newly diagnosed malignancy are significant risk factors for non-K. pneumoniae PLA in non-diabetic patients.
  • Physicians should investigate underlying malignancy in non-diabetic patients diagnosed with non-K. pneumoniae PLA.

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