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Extra-intestinal amebiasis: clinical presentation in a non-endemic setting
S Thorsen1, J Rønne-Rasmussen, E Petersen
1Department of Infectious Diseases, Hvidovre Hospital, Denmark.
Scandinavian Journal of Infectious Diseases
|January 1, 1993
Summary
Extra-intestinal amebiasis, often presenting as amebic liver abscesses, can occur in non-endemic areas. Early diagnosis and metronidazole treatment are crucial for favorable outcomes in patients with Entamoeba histolytica infection.
Area of Science:
- Infectious Diseases
- Hepatology
- Clinical Medicine
Background:
- Extra-intestinal amebiasis is uncommon in non-endemic regions like Denmark.
- Entamoeba histolytica is the causative agent, often leading to liver abscesses.
- Understanding the clinical presentation is key for timely diagnosis.
Purpose of the Study:
- To define the clinical profile of extra-intestinal amebiasis in a non-endemic setting.
- To identify key diagnostic features and challenges.
- To evaluate treatment response.
Main Methods:
- Retrospective analysis of 37/38 patients with high Entamoeba histolytica titers.
- Inclusion criteria: reciprocal titers >= 512.
- Clinical data review including symptoms, imaging, and treatment outcomes.
Main Results:
- 24 patients had extra-intestinal amebiasis, all with amebic liver abscesses confirmed by ultrasonography.
- Fever (91%) was the most common symptom; abdominal pain/tenderness was absent in 22%.
- Pulmonary involvement (45%) was noted; liver abscesses were the sole manifestation.
Conclusions:
- Extra-intestinal amebiasis in non-endemic areas presents primarily as amebic liver abscesses.
- Atypical presentations, including lack of abdominal symptoms, are common.
- Metronidazole is effective, but initial misdiagnosis is frequent.