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Table 2 Clinical characteristics of patients, underlying diseases and abscess’ characteristics

From: The role of Enterococcus spp. and multidrug-resistant bacteria causing pyogenic liver abscesses

Variable No. of patients (%)
Comorbiditiesa
 Malignancy 32 (34.9)
 Diabetes mellitus 21 (24.4)
 Liver cirrhosis 14 (16,3)
 Liver transplantation 10 (11.6)
Direct cause of abscess
 Bile duct stenosis/obstruction 27 (31.4)
 Anastomosis leakage 13 (15.1)
 Biliary infection 13 (15.1)
 Superinfected liver metastasis 8 (9.3)
 Ischemic 5 (5.8)
 Intra-abdominal infection 2 (2.3)
 Non-intestinal sepsis 4 (4.7)
 Cryptogenic 14 (16.3)
History of prior abdominal surgery 40 (57.0)
History of prior ERCP/PTCD 56 (53.5)
PLA under laid-in biliary stent 33 (38.4)
Initial symptomsa
 Fever 51 (59.3)
 Right upper quadrant pain 41 (47.7)
 Chills 14 (16.3)
 Jaundice 10 (11.6)
 Unspecific abdominal pain 6 (7.0)
 Other 30 (34.9)
 None 3 (3.5)
Number of abscess
One 57 (66.3)
Two 12 (14.0)
Multiple 17 (19.8)
Size of abscess (diameter)
  < 5 cm 25 (29.1)
 5–10 cm 33 (38.4)
  > 10 cm 11 (12.8)
 Not documented 17 (19.8)
  1. Abbreviations: ERCP endoscopic retrograde cholangiopancreatography, PTCD percutaneous transhepatic cholangiography and drainage
  2. aPatients fit to plural categories were counted in each category