Actinomycetes in pyogenic liver abscess.

Three patients with pyogenic liver abscesses had actinomycetes cultured from aspirated pus, although it is unusual for hepatic actinomycosis to present in this way. The spectrum of bacteria found in liver abscesses appears to be changing, with the increased isolation of anaerobes partly due to improved techniques. It is important to recognise the presence of actinomycetes so that appropriate chemotherapy can be given.