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Pyogenic liver abscess: changing epidemiology and prognosis
Abstract:
We reviewed the clinical features, methods of diagnosis, and outcome of 31 patients with pyogenic liver abscess seen at a private community hospital between 1973 and 1980. Two patient groups emerged. Group 1 consisted of 25 patients who had classical signs and symptoms of primary liver abscess. Group 2 consisted of six patients, most with underlying malignancy, in whom liver abscess(es) occurred as part of a septicemic process involving multiple other sites. The mortality was 0% in group 1 and 100% in group 2. Further analysis of the patients in group 1 revealed that (1) in contrast to findings of older studies, pyogenic liver abscess in now largely a disease of older adults who often have no identifiable predisposing process; (2) newer noninvasive imaging techniques greatly facilitate a firm diagnosis; and (3) the prognosis for such patients has become remarkably good, perhaps because of earlier diagnosis.
Insights
Pyogenic liver abscesses in older adults are now diagnosed earlier using advanced imaging, leading to improved outcomes. However, abscesses linked to sepsis and malignancy remain fatal.
Area of Science:
- Hepatology
- Infectious Diseases
- Radiology
Background:
- Pyogenic liver abscess (PLA) is a serious condition with historically high mortality.
- Previous studies indicated specific predisposing factors and diagnostic challenges.
- The evolution of diagnostic and treatment strategies necessitates updated clinical insights.
Purpose of the Study:
- To review the clinical features, diagnostic methods, and outcomes of pyogenic liver abscess patients.
- To identify distinct patient groups and their associated prognoses.
- To assess the impact of modern diagnostic techniques on PLA management.
Main Methods:
- Retrospective review of 31 patients diagnosed with pyogenic liver abscess between 1973 and 1980.
- Categorization of patients into primary abscess (Group 1) and abscess secondary to sepsis/malignancy (Group 2).
- Analysis of clinical presentation, diagnostic modalities, and patient outcomes.
Main Results:
- Two groups identified: 25 patients with primary PLA (Group 1) and 6 with secondary abscesses (Group 2).
- Group 1 experienced 0% mortality, while Group 2 had 100% mortality.
- PLA is increasingly seen in older adults, often without identifiable predisposing factors.
- Noninvasive imaging techniques facilitated diagnosis, correlating with improved prognosis.
Conclusions:
- Pyogenic liver abscess in older adults is increasingly diagnosed early via noninvasive imaging, significantly improving prognosis.
- Abscesses occurring as part of a septicemic process, particularly with underlying malignancy, carry a grave prognosis.
- The shift towards earlier diagnosis and treatment has transformed PLA outcomes for primary cases.