Abstract
Objective: The purpose of this study was to report the computed tomography (CT) findings of non-pneumophila Legionella pneumonia and to compare these CT findings to those caused by Legionella pneumophila in oncologic patients. Methods: Chest CT scans of 34 oncologic patients with culture-proven Legionella infection (16 L. pneumophila and 18 non-pneumophila Legionella) were retrospectively reviewed. Radiologic checkpoints included consolidation, ground-glass opacities, cavitation, nodules, tree-inbud opacities, septal thickening, pleural effusions, and adenopathy, as well as the halo, reversed halo, and bulging fissure signs. Results: The most common imaging feature of Legionella pneumonia was consolidation, seen in 94% of patients. Ground-glass opacities were the next most common abnormality. The halo sign was present in 26% of patients, in both immunocompetent and immunosuppressed hosts. Most features occurred with similar frequency between L. pneumophila and non-pneumophila Legionella. Conclusions: Findings in L. pneumophila pneumonia and non-pneumophila Legionella pneumonia are similar but nonspecific. Airspace consolidation is almost always present; the halo sign is not uncommon.
Original language | English (US) |
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Pages (from-to) | 917-922 |
Number of pages | 6 |
Journal | Journal of computer assisted tomography |
Volume | 40 |
Issue number | 6 |
DOIs | |
State | Published - 2016 |
Keywords
- Halo sign
- Legionella pneumonia
- Legionellosis
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
MD Anderson CCSG core facilities
- Biostatistics Resource Group