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Table 3 Profiles of isolated microorganisms in patients with pyogenic liver abscess

From: Maximal diameter of liver abscess independently predicts prolonged hospitalization and poor prognosis in patients with pyogenic liver abscess

Characteristics Total (n = 648) Maximal size of abscess P value
< 5 cm (n = 293) 5 ~ 10 cm (n = 312) ≥ 10 cm (n = 43)
Positive culture results 326 (50.4) 147 (50.2%) 158 (50.8%) 21 (48.8%) 0.966
 Monomicrobial 290 (44.8) 131 (44.7) 139 (44.6) 20 (46.5) 0.971
 Polymicrobial 36 (5.6) 16 (5.5) 19 (6.1) 1 (2.3) 0.598
Isolated microorganisms
 Gram (−) organisms
  Klebsiella pneumoniae 236 (36.4) 106 (36.2) 118 (37.8) 12 (27.9) 0.445
  Escherichia coli 34 (5.2) 16 (5.5) 16 (5.1) 2 (4.7) 0.967
  Aeromonas species 2 (0.3) 1 (0.3) 1 (0.3) 0 (0.0) 0.930
  Enterobacter species 15 (2.3) 8 (2.7) 6 (1.9) 1 (2.3) 0.804
  Acinetobacter species 2 (0.3) 0 (0.0) 2 (0.6) 0 (0.0) 0.340
  Pseudomonas species 9 (1.4) 4 (1.4) 5 (1.6) 0 (0.0) 0.701
  Citrobacter species 2 (0.3) 0 (0.0) 2 (0.6) 0 (0.0) 0.340
  Others 6 (0.9) 3 (1.0) 2 (0.6) 1 (2.3) 0.542
 Gram (+) organisms
  Streptococcus species 30 (4.6) 13 (4.4) 14 (4.5) 3 (7.0) 0.750
  Staphylococcus species 20 (3.1) 8 (2.7) 9 (2.9) 3 (7.0) 0.310
  Enterococcus species 7 (1.1) 2 (0.7) 5 (1.6) 0 (0.0) 0.427
  Clostridium species 1 (0.2) 1 (0.3) 0 (0.0) 0 (0.0) 0.545
  Others 3 (0.5) 2 (0.7) 1 (0.3) 0 (0.0) 0.725
 Fungus 1 (0.2) 0 (0.0) 1 (0.3) 0 (0.0)
  1. Data were expressed as number (percentage) or mean ± standard deviation. PCD Percutaneous catheter drainage
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