CT appearances of pyogenic liver abscess caused by various organism in Phrae hospital
Keywords:
liver abscess, Klebsiella, Melioidosis, Salmonella, E. coli, salmonella, enterobacter, streptococcus, computer tomographyAbstract
Background: Liver abscess is common in Asia with high mortality rate. Computer tomography has been accepted as the key modality to evaluate patient with liver abscess. To our knowledge, the characteristic CT finding that help to differentiate each pathologic organism of liver abscess has not been established.
Objective: To determine causes of liver abscess in Phrae hospital and describe the CT findings of each organisms in hope to distinguish between each disease and compare with other recent researches.
Study design: Data were collected from 20 samples who had been admitted to Phrae hospital from January 2015 to August 2020 and diagnosed with liver abscess with microbiology proved using triple phases abdominal CT scan. Data were analyzed using mean and percentage.
Results: The most common caused of liver abscess is Klebsiella 5(25%), Melioidosis 2(10%), E. coli 1(5%), Salmonella 1(5%), Enterobacter 1(5%), Alpha hemolytic streptococcus 1(5%) and cannot determined cause 9(45%). Regarding abdominal CT scan findings, most organisms had multiple lesions included Klebsiella (100%), Melioidosis (100%), Salmonella, E. coli, alpha hemolytic streptococcus and undetermined cause (88.89%). Most organisms had right hepatic lobe location, consist of Klebsiella (80%), Enterobacter and undetermined cause (55.56%). Near total organisms had ill-defined border, peripheral enhancement and central cystic component except for Salmonella and E. coli. Regarding extrahepatic extension or rupture, Klebsiella (20%) and alpha hemolytic streptococcus reveal this finding.
Conclusion: According to this study, the CT appearance of each organism is overlapping and non-specific. Therefore, microbiologic confirmation or biopsy is usually necessary for diagnosis.
Keywords: liver abscess, Klebsiella, Melioidosis, Salmonella, E. coli, salmonella, enterobacter, streptococcus, computer tomography
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