Pyogenic liver abscess is one of the most common visceral abscesses, its incidence is increasing worldwide. According to the previous literature, the mortality rate of pyogenic liver abscess is as high as 31% and become a serious social health problem. However, the data of prospective observational real-world studies are scarce and no relevant research of the liver histological change has been reported, so the long-term prognosis and the risk factors for pyogenic liver abscess are still unknown. Patients will be followed up prospectively for a period of 2 years and observed clinical prognosis (all-cause mortality, the recurrence rate, and the rehospitalization rate). The investigators will investigate the predictive value of clinical risk factors for clinical prognosis and establish clinical prediction models to predict the long-term prognosis of pyogenic liver abscesses.

Inclusion Criteria:

• Patients older than 18 years of age;
• Irrespective of gender;
• Symptomatic patients of liver abscess confirmed with radiology imaging, either by ultrasonography or computed tomography scan.

Exclusion Criteria:

• Patients <18 years old;
• Pregnancy at presentation.

Patients older than 18 years of age admitted for pyogenic liver abscesses

There is no plan to share IPD with other researchers except for those are directly involved with this study.