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[Legionnaire's disease with predominant liver involvement]
A Magro Molina1, V Plaza Poquet, V Giner Galvañ
1Servicio de Medicina Interna, Hospital Clínico de Valencia, Universidad de Valencia.
Anales De Medicina Interna (Madrid, Spain : 1984)
|July 2, 2002
Summary
Legionella Pneumophila pneumonia presents with non-specific symptoms, making diagnosis difficult. Early empirical antibiotic therapy, particularly with clarithromycin and rifampin, is recommended for severe cases to improve outcomes.
Area of Science:
- Infectious Diseases
- Pulmonology
- Microbiology
Background:
- Legionella Pneumophila pneumonia lacks distinct clinical features, complicating early diagnosis.
- Fever, non-productive cough, diarrhea, and altered mental status are common, but not pathognomonic.
- Severe systemic involvement via hematogenous spread distinguishes it from other atypical pneumonias.
Observation:
- A critical community-acquired pneumonia case caused by Legionella Pneumophila serogroup 1 was observed.
- The patient presented with liver dysfunction as a primary manifestation.
- Diagnosis was challenging, highlighting the difficulties in identifying atypical pneumonia agents.
Findings:
- The patient showed a positive response to empirical antibiotic treatment with clarithromycin and rifampin.
- Hyponatremia and transient hypertransaminasemia were noted, common in Legionella infections.
- Timely etiological diagnosis is often delayed, underscoring the need for prompt management.
Implications:
- Empirical antibiotic therapy is crucial for severe pneumonias without confirmed microbiological diagnosis.
- Combination therapy with clarithromycin and rifampin may be effective for Legionella Pneumophila.
- Early intervention can reduce mortality rates associated with this severe infection.