Necrotizing pneumonia caused by community-acquired methicillin-resistant Staphylococcus aureus: an increasing cause

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Updated: Jul 7, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
12:18

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Mark D Ebert1, Sheila Sheth, Elliot K Fishman

  • 1H. Russell Morgan Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA. ebertmark@jhmi.edu

Emergency Radiology
|February 16, 2008
PubMed

Insights

Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) is a growing threat, causing aggressive pneumonia. Radiologists must recognize its distinct radiographic signs for timely diagnosis and improved patient outcomes.

Area of Science:

  • Infectious Diseases
  • Radiology
  • Microbiology

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) is increasingly prevalent in both hospital and community settings.
  • Community-acquired MRSA (CA-MRSA) strains are genetically distinct and often produce Panton-Valentine leukocidin (PVL).
  • PVL contributes to a severe necrotizing disease phenotype with poor prognosis.

Observation:

  • Presents a case of CA-MRSA pneumonia.
  • Highlights the radiographic manifestations of this infection.
  • Emphasizes the need for radiologist awareness.

Findings:

  • CA-MRSA pneumonia exhibits specific, recognizable radiographic features.
  • Early identification of these features is crucial for patient management.
  • The disease can be rapidly fatal if not promptly diagnosed.

Implications:

  • Radiologists play a critical role in the early detection of CA-MRSA pneumonia.
  • Increased awareness of CA-MRSA can lead to earlier intervention and potentially better outcomes.
  • This case underscores the evolving landscape of infectious diseases and the importance of diagnostic imaging.

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