CTICasesLegionella pneumonia
Imaging findings
Chest radiographs and CT in a patient presenting with a profound headache, abdominal pain, and hyponatremia show bilateral, multi-lobar ground-glass opacities merging into dense consolidation, particularly in the right lower lobe, accompanied by bilateral pleural effusions.
Key takeaways
Legionella pneumophila typically causes a severe, multi-lobar atypical pneumonia. It characteristically presents with prominent extrapulmonary findings, such as severe headache, gastrointestinal symptoms, and hyponatremia, and often responds well to targeted macrolide or fluoroquinolone therapy.
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