Pneumonia CT
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Pneumonia CT On the Web |
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American Roentgen Ray Society Images of Pneumonia CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Alejandro Lemor, M.D. [2]
Overview
A chest CT scan is not routinely done in patients with pneumonia, but is a diagnostic test that may be useful when a chest X-ray is not conclusive. CT findings may include lobar consolidation, ground-glass oppacities, pleural effusion, lymphadenopathy, and tree-in-bud appereance.
CT
- A chest CT could be useful when a chest X-ray has inconclusive signs of pneumonia but the clinical manifestation suggest pneumonia.
- CT findings in pneumonia include:[1]
- Airspace consolidation
- Ground-glass oppacities
- Pleural effusion
- Hiliar and/or mediastinal lymphadenopathy
- Bronchiectasis
- Tree-in-bud appereance
 Image courtesy of RMH Key Conditions, Radiopedia. (original file here). Creative Commons BY-SA-NC |
 Image courtesy of RMH Key Conditions, Radiopedia. (original file here). Creative Commons BY-SA-NC |
Comparison Between CT Findings in Viral and Bacterial Pneumonia
| CT Finding | Bacterial | Viral |
|---|---|---|
| No findings | 9% | 33% |
| Focal Consolidation | 9% | 6% |
| Pleural Effusion | 41% | 22% |
| Ground-glass Opacity | 45% | 22% |
| Tree-in-bud Appereance | 14% | 31% |
| Bronchial Wall Thickening | 27% | 31% |
| Multifocal Consolidation | 36% | 27% |
| Adapted from American Journal of Roentgenology. 2011;197: 1088-1095[2] | ||
References
- ↑ Ichikado, Kazuya (2014). "High-Resolution Computed Tomography Findings of Acute Respiratory Distress Syndrome, Acute Interstitial Pneumonia, and Acute Exacerbation of Idiopathic Pulmonary Fibrosis". Seminars in Ultrasound, CT and MRI. 35 (1): 39–46. doi:10.1053/j.sult.2013.10.007. ISSN 0887-2171.
- ↑ Miller, Wallace T.; Mickus, Timothy J.; Barbosa, Eduardo; Mullin, Christopher; Van Deerlin, Vivanna M.; Shiley, Kevin T. (2011). "CT of Viral Lower Respiratory Tract Infections in Adults: Comparison Among Viral Organisms and Between Viral and Bacterial Infections". American Journal of Roentgenology. 197 (5): 1088–1095. doi:10.2214/AJR.11.6501. ISSN 0361-803X.