This report is a clinical analysis and study of therapeutic effect between the surgical and percutaneous catheter drainage of 25 cases of pyogenic liver abscesses who were admitted and treated at the Chungnam National University Hospital from February 1986 to July 1988 and the results were as follows :
1. The common clinical symptoms and signs in order of frequency were fever(92.0％), R. U. Q. pain(84.0％), anorexia(80.0％), and malaise(76.0％).
2. The liver function test were helpful in diagnosis such as increased alkaline phosphatase(92.0％), leukocytosis(88.0％), increased GOT(80.0％), and increased prothrombin time(68.0％).
3. The liver abcess located in the right lobe in 18 cases(72.0％), left lobe in 4 cases(16.0％), and both lobes in 3 cases(12.0％). And multiple abscesses were found in 6 cases(24.0％).
4. 10 cases of liver abscesses were drained surgically, and percutaneous catheter drainage was performed in 15 cases.
5. Mean days when afebrile after surgical drainage were 4 days, and after percutaneous catheter drainage were 7 days.
6. Mean hospital stay after surgical drainage were 26 days, and after percutaneous catheter drainage were 22 days.
7. Cure rate after surgical drainage was 100.0％, and after percutaneous catheter drainage was 86.7％.
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