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Objectives: Liver abscess can develop as a complication of hepatobiliary disease or other intraabdominal infections, but more recently it is associated with primary and secondary liver malignancies and their treatment. The goal of this study was to analyze the epidemiology, etiology and clinical characteristics of pyogenic liver abscess in Oman. The intention was to obtain the information needed for the adequate liver abscess empirical treatment. Methods: This retrospective study took place in a tertiary hospital. Consecutive patients treated for the liver abscess during the five years period, from January 2013 until the end of 2017, were enrolled. Their demographic and clinical data were used to study the characteristics of pyogenic liver abscess in Oman. Results: Fifty-three patients with pyogenic liver abscess were enrolled in the study. They were predominantly male and younger than 60 years. Klebsiella pneumoniae was the most usual bacteria causing the liver abscess. Clinical presentation was unspecific and the abdominal pain and high fever were the most usual symptoms. Conclusion: The majority of pyogenic liver abscesses are caused by K. pneumoniae so the empirical treatment should be started with antibiotic directed against it. Further studies are needed to establish the local role of anaerobic bacteria in pyogenic liver abscess as well as to monitor the presence of hypervirulent K. pneumoniae in Oman.

Keywords: Pyogenic liver abscess; Etiology; Epidemiology; Klebsiella pneumoniae.

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Pandak, N., Mahdi, A. S., al Majrafi, A., Molay, M., Deenadayalan, S. S., Khamis, F., & Al Balushi, Z. (2021). Characteristics of Pyogenic Liver Abscess: Experience of a Single Centre in Oman. Sultan Qaboos University Medical Journal [SQUMJ], 1(1).