CTICasesLegionella Pneumophila Pneumonia
Imaging findings
Chest radiograph and CT show rapid progression of bilateral consolidations and ground-glass opacities with a pleural effusion over a few days, confirmed as Legionella pneumophila rather than viral infection.
Key takeaways
Legionella pneumophila is a common cause of atypical bacterial pneumonia. It often starts unilaterally but progresses rapidly to bilateral consolidations. The presence of pleural effusions and lack of tree-in-bud nodules help differentiate it from viral pneumonias.
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