Computed tomographic differences of pyogenic liver abscesses caused by Klebsiella pneumoniae and non-Klebsiella pneumoniae

Sung Bum Kim, Bo Kyung Je, Kee Yeol Lee, Seung Hwa Lee, Hwan Hoon Chung, Sang Hoon Cha

Research output: Contribution to journalReview articlepeer-review

27 Citations (Scopus)


OBJECTIVE: To investigate the distinctive computed tomographic(CT) features of pyogenic liver abscess (PLA) caused by Klebsiella pneumoniae (KLA). METHODS: 114 PLA patients (62 men, 52 women, age range 25-89 years, mean age 60.9 years) with positive yield of blood or pus cultures were divided into 2 groups; KLA group (n = 58) and non-KLA group (n = 56). We retrospectively reviewed the CT images. The independent-sample t-test, X test, or Fisher's exact test were used with SPSS for windows version 11.0. RESULTS: Gas formation showed no significant difference between two groups (P = 0.284), but air-fluid pattern was found only in KLA group (P = 0.027). The rim on dynamic CT was showed less frequently in KLA group than non-KLA group (P < 0.001), and smooth and regular rim was more common in non-KLA group (P < 0.001). The septation and septal breakage were more common in KLA group (P < 0.001). The turquoise sign was found significantly more in KLA group (P < 0.001). The hairball sign was detected only in KLA group (P < 0.001). The cluster sign was less frequent in KLA group (P < 0.001). CONCLUSION: KLA had a series of characteristic intra-abscess features; septal breakage, turquoise-like structure, hairball-like content, air-fluid level, and no enhanced rim. When turquoise/hairball sign or air-fluid level is present in abscess, KLA would be a probable diagnosis in the clinical field.

Original languageEnglish
Pages (from-to)59-65
Number of pages7
JournalJournal of Computer Assisted Tomography
Issue number1
Publication statusPublished - 2007
Externally publishedYes


  • Computed tomography
  • Klebsiella pneumoniae
  • Liver abscess
  • Pyogenic

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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