Feature	Pyogenic abscess	Amoebic liver abscess
Sex bias	No	Males
Typical age at presentation	Fifth to seventh decade of life	Third decade of life
History of tropical travel	Uncommon	Almost universal
Underlying hepatobiliary comorbidities	Very common	Uncommon
Number of abscesses	Often small and multiple	Usually single; right lobe
Hypoalbuminemia	Uncommon	Common
Positive blood or aspirate bacterial cultures	Common	Rare
Elevation of the right hemidiaphragm on chest x-ray	Uncommon	Common
Amoebic serology	Negative	Positive in 90% within 2 weeks of symptom onset