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Published on: October 12, 2018
Amebic liver abscess and human immunodeficiency virus infection: a report of three cases
1Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
Abstract:
Invasive amebiasis rarely occurs in homosexual men and human immunodeficiency virus (HIV)-infected individuals and has not been regarded as a beacon for concomitant HIV infection. We encountered a bisexual man with a protracted course of amebic liver abscess and amebic colitis. In the presence of fever, generalized lymphadenopathy, and elevated serum aminotransferase levels, HIV infection was suspected and then confirmed by a de novo seroconversion of HIV antibody. Subsequently, we noted two consecutive patients with amebic liver abscess, also later found to be infected with HIV. The ameba obtained from these three cases was identified as Entamoeba histolytica by amplification of 16S ribosomal RNA by polymerase chain reaction and direct sequencing. This observation suggests that amebic liver abscess and colitis can be presentations for HIV infection in the Far East. Thus, the local patients with invasive amebiasis, especially those with a protracted course or with risk factors of HIV infection, should be tested for HIV.
Insights
Invasive amebiasis, particularly amebic liver abscess, may indicate human immunodeficiency virus (HIV) infection in the Far East. Clinicians should consider HIV testing for patients with invasive amebiasis, especially those with prolonged symptoms or HIV risk factors.
Area of Science:
- Infectious Diseases
- Hepatology
- Virology
Background:
- Invasive amebiasis is infrequently associated with homosexual men and individuals with human immunodeficiency virus (HIV).
- It has not been traditionally recognized as an indicator of concurrent HIV infection.
- This study investigates a potential link between invasive amebiasis and HIV in the Far East.
Observation:
- A case series involving three patients in the Far East presenting with invasive amebiasis (amebic liver abscess and colitis).
- One patient was a bisexual man with a prolonged amebiasis course, who was subsequently diagnosed with HIV via seroconversion.
- Two additional patients with amebic liver abscess were also found to be infected with HIV.
Findings:
- The causative agent, Entamoeba histolytica, was identified in all three cases using 16S ribosomal RNA gene sequencing.
- The clinical presentation of amebic liver abscess and colitis in these patients was associated with newly diagnosed HIV infection.
- This suggests that invasive amebiasis can serve as a clinical manifestation of HIV infection.
Implications:
- Invasive amebiasis, particularly with protracted symptoms or risk factors, should prompt consideration for HIV testing in endemic regions.
- This finding may alter the diagnostic approach for invasive amebiasis in the Far East.
- Early identification of HIV in patients with amebiasis can facilitate timely antiretroviral therapy and improve patient outcomes.
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