Document Detail

Meticillin-resistant Staphylococcus aureus and meticillin-susceptible S. aureus pneumonia: comparison of clinical and thin-section CT findings.
MedLine Citation:
PMID:  21750126     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: The purpose of this study was to compare the clinical and thin-section CT findings in patients with meticillin-resistant Staphylococcus aureus (MRSA) and meticillin-susceptible S. aureus (MSSA).
METHODS: We retrospectively identified 201 patients with acute MRSA pneumonia and 164 patients with acute MSSA pneumonia who had undergone chest thin-section CT examinations between January 2004 and March 2009. Patients with concurrent infectious disease were excluded from our study. Consequently, our study group comprised 68 patients with MRSA pneumonia (37 male, 31 female) and 83 patients with MSSA pneumonia (32 male, 51 female). Clinical findings in the patients were assessed. Parenchymal abnormalities, lymph node enlargement and pleural effusion were assessed.
RESULTS: Underlying diseases such as cardiovascular were significantly more frequent in the patients with MRSA pneumonia than in those with MSSA pneumonia. CT findings of centrilobular nodules, centrilobular nodules with a tree-in-bud pattern, and bronchial wall thickening were significantly more frequent in the patients with MSSA pneumonia than those with MRSA pneumonia (p = 0.038, p = 0.007 and p = 0.039, respectively). In the group with MRSA, parenchymal abnormalities were observed to be mainly peripherally distributed and the frequency was significantly higher than in the MSSA group (p = 0.028). Pleural effusion was significantly more frequent in the patients with MRSA pneumonia than those with MSSA pneumonia (p = 0.002).
CONCLUSIONS: Findings from the evaluation of thin-section CT manifestations of pneumonia may be useful to distinguish between patients with acute MRSA pneumonia and those with MSSA pneumonia.
K Morikawa; F Okada; Y Ando; R Ishii; S Matsushita; A Ono; T Maeda; H Mori; S Yamashita; K Kawahara
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2011-07-12
Journal Detail:
Title:  The British journal of radiology     Volume:  85     ISSN:  1748-880X     ISO Abbreviation:  Br J Radiol     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-06-05     Completed Date:  2012-08-06     Revised Date:  2013-06-28    
Medline Journal Info:
Nlm Unique ID:  0373125     Medline TA:  Br J Radiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  e168-75     Citation Subset:  AIM; IM    
Department of Radiology, Oita University Faculity of Medicine, Oita, Japan.
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MeSH Terms
Aged, 80 and over
Anti-Bacterial Agents / pharmacology
Methicillin / pharmacology
Methicillin-Resistant Staphylococcus aureus*
Middle Aged
Pneumonia, Staphylococcal / drug therapy*,  radiography*
Retrospective Studies
Staphylococcus aureus / drug effects
Tomography, X-Ray Computed* / methods
Young Adult
Reg. No./Substance:
0/Anti-Bacterial Agents; 61-32-5/Methicillin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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