Which is the most common cause of liver abscess in adults?
E.coli is the most common cause of liver abscess in adults. Polymicrobial involvement is common in pyogenic liver abscess with Escherichia coli and Klebsiella pneumoniae being the two most frequently isolated pathogens.
Streptococcus pyogenes
Staph. aureus
E. coli
Proteus
Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli)