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Fatal hemorrhagic pneumonia: Don't forget Stenotrophomonas maltophilia

Cristina Gutierrez1, Egbert Pravinkumar1, Dave Balachandran2

  • 1Department of Critical Care, Division of Anesthesiology and Critical Care, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.

Respiratory Medicine Case Reports
|July 1, 2016
PubMed

Insights

Fatal hemorrhagic pneumonia caused by Stenotrophomonas maltophilia is rare but deadly in immunocompromised patients, particularly those with acute myeloid leukemia. Early detection is crucial for potential treatment and improved outcomes.

Area of Science:

  • Medical Microbiology
  • Hematology
  • Infectious Diseases

Background:

  • Stenotrophomonas maltophilia is an opportunistic pathogen often associated with healthcare-associated infections.
  • In immunocompromised individuals, S. maltophilia can cause severe conditions like bacteremia and pneumonia.
  • Acute myeloid leukemia (AML) patients are particularly vulnerable due to their compromised immune status.

Observation:

  • A rare case of fatal hemorrhagic pneumonia in an acute myeloid leukemia patient is presented.
  • The pneumonia was confirmed to be secondary to Stenotrophomonas maltophilia infection.
  • This presentation is uncommon, with limited documented cases in medical literature.

Findings:

  • Hemorrhagic pneumonia due to S. maltophilia has a high mortality rate, with reported 100% mortality within 72 hours.
  • This specific bacterial presentation is exceptionally rare, with only 31 cases previously documented.
  • The pathogen, typically considered non-virulent, demonstrated significant pathogenicity in this immunocompromised host.

Implications:

  • Rapid clinical recognition and prompt suspicion of S. maltophilia hemorrhagic pneumonia are critical for timely intervention.
  • This case highlights the potential for severe, life-threatening infections from opportunistic pathogens in vulnerable patient populations.
  • Further research into early diagnostic markers and targeted therapies for S. maltophilia-induced hemorrhagic pneumonia is warranted.
Keywords:
Hemorrhagic pneumoniaStenotrophomonas maltophilia

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