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. 2012 Mar 14;18(10):1110–1116. doi: 10.3748/wjg.v18.i10.1110

Table 3.

Bacteriology, pathogenesis and confirmatory investigations of hepatic neoplasm- and non-hepatic neoplasm-associated pyogenic liver abscess n (%)

Bacteriology HN group(n = 35) Non-HN group(n = 283) P value
Gram-positive organism 6 (17.2) 23 (8.1) 0.04
Streptococcus milleri 3 (8.6) 18 (6.4)
Others 3 (8.6) 5 (1.7)
Gram-negative organism 8 (22.8) 171 (60.4) < 0.01
Escherichia coli 2 (5.7) 27 (9.5)
Klebsiella spp 5 (14.2) 135 (47.7)
Others 1 (2.9)1 9 (3.2)2
Mixed growth 14 (40.0) 43 (15.2) < 0.01
Unknown 7 (20.0) 46 (16.3) < 0.05
Antibiotic resistance 10 (28.6) 49 (17.3) 0.05
Pathogenesis
Biliary tract disorder 25 (71.4) 175 (61.8) 0.14
Portal pyemia 3 (8.6) 11 (3.9) 0.10
Direct spread 5 (14.3) 0 (0) < 0.01
Hematogenous 2 (5.7) 5 (1.8) 0.07
Cryptogenic 0 (0) 15 (5.3) 0.08
Not investigated 0 (0) 77 (27.2) < 0.01
1

Bacteriodes (n = 1);

2

Enterobacter (n = 4), Citrobacter (n = 2), Fusobacterium (n = 2), Proteus (n = 1). HN: Hepatic neoplasm.