Abdominal ultrasound (most widely used)
CT
MRI
ELISA-sensitivity inversely related to antigen sequestration in cysts
Percutaneous aspiration
Echinococcosis
Neurocysticercosis
Cryptococcosis
Pyogenic abscess
Hepatocellular carcinoma
Aerobic: Escherichia coli, Klebsiella, Pseudomonas
Hepatic abscess
Anaerobic: Enterococcus, bacteroides, anaerobic streptococci