Necrotizing Cavitary Pneumonia by Serratia marcescens in a Patient Treated With Dupilumab: Correlation or Causation?

Serratia species are gram-negative bacilli causing opportunistic and nosocomial infections, often in patients who are immunocompromised. A 61-year-old man with severe asthma receiving dupilumab presented with fever and chills. A chest computed tomography scan revealed bilateral cavitary lesions sugg...

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Bibliographic Details
Main Authors: Dhiraj Regmi, Mayuri Patel, Balvender Singh, Anita Naik, Christopher Haas
Format: Article
Language:English
Published: American College of Physicians 2025-06-01
Series:Annals of Internal Medicine: Clinical Cases
Online Access:https://www.acpjournals.org/doi/10.7326/aimcc.2025.0205
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Summary:Serratia species are gram-negative bacilli causing opportunistic and nosocomial infections, often in patients who are immunocompromised. A 61-year-old man with severe asthma receiving dupilumab presented with fever and chills. A chest computed tomography scan revealed bilateral cavitary lesions suggestive of necrotizing pneumonia. Bronchoalveolar lavage grew Serratia marcescens, and he was treated with prolonged antibiotics. Serratia marcescens should be considered in necrotizing pneumonia, even in patients who are immunocompetent, with dupilumab potentially as the inciting factor.
ISSN:2767-7664