CTICasesStaphylococcus aureus Necrotizing Pneumonia
Imaging findings
Chest CT shows extensive consolidative opacities in both lower lobes with multiple areas of rapid cavitation, including small cavitary nodules (Cheerios) and large, thick-walled cavitary lesions. The patient is intubated and septic, with blood cultures growing methicillin-sensitive Staphylococcus aureus (MSSA).
Key takeaways
Staphylococcus aureus is a well-known cause of severe community-acquired and nosocomial pneumonia, particularly following viral influenza infection. It is highly aggressive and characterized by tissue necrosis, abscess formation, and rapid cavitation. Multiple small cavitary nodules (Cheerios) can be seen on CT, representing microabscesses that have excavated into the airway.
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