CTICasesRapidly Progressive Legionella mackayii Pneumonia Mimicking Fungal Infection
Imaging findings
A rapidly growing lung nodule with a dense central component and a ground glass halo (classic for Aspergillus), progressing dramatically over ten days to a huge consolidation with a necrotic center and contralateral spread.
Key takeaways
In immunosuppressed patients, a rapidly progressing nodule initially appearing like angioinvasive aspergillosis (dense center with halo) should prompt consideration of other fast-growing infections like Mucor or Legionella mackayii. Rapid progression is a key distinguishing feature from typical aspergillosis.
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