CTICasesPseudomonas aeruginosa Necrotizing Pneumonia
Imaging findings
CT chest shows a rapidly developing cavitary, bird's-nest-like mass in the left lung apex with surrounding ground-glass and septal lines from regional interstitial edema. Sputum and BAL cultures grew Pseudomonas aeruginosa.
Key takeaways
Pseudomonas aeruginosa is an aggressive pathogen capable of causing necrotizing pneumonia and cavitation. Similar to angioinvasive Aspergillus, Pseudomonas can invade blood vessels, causing local necrosis, thrombosis, and regional interstitial edema, even in immunocompetent patients.
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