Pyogenic liver abscess: An audit of 10 years’ experience

Table 3 Summary of microbiology results for blood culture results, liver abscess aspirate culture results, and presumed causative pathogen

Organism	n (% of patients with culture results)
	Positive blood cultures	Positive liver aspirate cultures	Causative pathogen
Streptococcus milleri	8 (14)	12 (24)	16 (25)
Klebsiella species	9 (16)	8 (16)	13 (21)
K. pneumoniae	7	8	11
K. oxytoca	1	0	1
K. terrigena	1	0	1
Escherichia coli	6 (11)	3 (5.9)	10 (16)
Mixed1	2 (3.6)	6 (12)	5 (8)
Fusobacterium necrophorum	1 (1.8)	1 (2.0)	2 (3.2)
Pseudomonas aeruginosa	0 (0)	1 (2.0)	1 (1.6)
Lactobacillus	0 (0)	1 (2.0)	1 (1.6)
Corynebacterium urealyticum	0 (0)	1 (2.0)	1 (1.6)
Citrobacter koseri	0 (0)	1 (2.0)	1 (1.6)
Staphylococcus aureus2	1 (1.8)	0 (0)	0 (0)
Causative organism not identified	-	-	13 (21)
Total negative	29 (52)	17 (33)	-
Total positive	27 (48)	34 (67)	50 (79)
Total number of patients with available culture results	/55	/51	/63

¹Includes 2 cases of Clostridium perfringens;

²Discordant with liver abscess microbiology. Likely contaminant.