liver abscess感染的可能

1.上升性ascending
細菌混雜 GNB + anaerobic + GPC
GNB: E coli, KP
Anaerobic: Becteroides fragilis
GPC: viridans streptococci
例子像是：
-biliary tract infection經過bile duct來
-intra-abdominal infection經過portal vein來

2.血行性hematogeneous
糖尿病人 Klebsiella Pneumoniae (GNB)
-bacteriamia

*另外如果是recurrent感染或是嚴重的biliary tract infection: 要想到pseudomona aeruginosa