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Applying Live Cell Imaging and Cryo-Electron Tomography to Resolve Spatiotemporal Features of the Legionella pneumophila Dot/Icm Secretion System
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Applying Live Cell Imaging and Cryo-Electron Tomography to Resolve Spatiotemporal Features of the Legionella pneumophila Dot/Icm Secretion System

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Computed tomographic features of Legionella pneumophila pneumonia in 38 cases

Fumikazu Sakai1, Hitoshi Tokuda, Hajime Goto

  • 1Department of Diagnostic Radiology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan. fmksakai@yahoo.co.jp

Journal of Computer Assisted Tomography
|January 30, 2007
PubMed
Abstract

Insights

Computed tomography (CT) reveals distinct imaging features for Legionella pneumophila pneumonia (LPP). Sharply demarcated peribronchovascular consolidation with ground glass opacity is a frequent CT finding in LPP.

Area of Science:

  • Radiology
  • Infectious Diseases
  • Pulmonology

Background:

  • Legionella pneumophila pneumonia (LPP) is a severe form of pneumonia.
  • Accurate and timely diagnosis is crucial for effective treatment.

Purpose of the Study:

  • To characterize the computed tomography (CT) imaging features of Legionella pneumophila pneumonia (LPP).
  • To differentiate LPP from Streptococcus pneumoniae pneumonia based on CT findings.

Main Methods:

  • Retrospective analysis of CT scans from 38 patients with confirmed LPP.
  • Comparison of CT findings in LPP cases with 35 cases of Streptococcus pneumoniae pneumonia.

Main Results:

  • LPP commonly presented with bilateral, multifocal consolidation and ground glass opacities.
  • Sharply demarcated peribronchovascular foci of consolidation intermingled with ground glass opacity were observed in 63% of LPP cases, versus 9% in S. pneumoniae pneumonia.
  • CT patterns did not correlate with clinical features like age, sex, or disease severity.

Conclusions:

  • CT imaging of LPP typically shows bilateral and unilateral consolidation and ground glass opacities.
  • The presence of sharply demarcated peribronchovascular consolidation with ground glass opacity is a characteristic CT appearance of LPP.

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