Pulmonary pseudomonas aeruginosa infection
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Pulmonary pseudomonas aeruginosa infection is an uncommon cause of community-acquired pneumonia but can be a common cause of nosocomial pneumonia. It becomes increasingly important in critically ill and ventilated patients.
Pneumonia due to Pseudomonas aeruginosa can occurs as several distinct syndromes 3:
- community acquired pneumonia - usually in patients with chronic lung disease
- hospital-acquired pneumonia - usually occurring in the ICU setting -ventilator associated pneumonia
- bacteremic pseudomonas aeruginosa pneumonia - usually in the neutropenic host
Radiographic features
CT - HRCT chest
It can have a number of radiographic presenations with the commonest patterns being 1,4
- areas of ground-glass attenuation - tends to involve multiple lobes and may demonstrate an upper zonal predilection 4
- bronchial wall thickening
- peribronchial infiltration and areas of consolidation.
A pleural effusion may be present in approximately 40% of patients.
Other uncommon features include intralobular reticular opacities, pleural enhancement, pulmonary cavities and centrilobular nodules.
-<li>areas of <a href="/articles/ground-glass-opacification-3">g</a><a href="/articles/ground-glass-opacification">round-glass attenuation</a> - tends to involve multiple lobes and may demonstrate an upper zonal predilection <sup>4</sup>- +<li>areas of <a href="/articles/ground-glass-opacification-3">g</a><a href="/articles/ground-glass-opacification-3">round-glass attenuation</a> - tends to involve multiple lobes and may demonstrate an upper zonal predilection <sup>4</sup>
-<li>peribronchial infiltration and areas of <a title="consolidation" href="/articles/air-space-opacification-1">consolidation</a>. </li>-</ul><p>A pleural effusion may be present in approximately 40% of patients. </p><p>Other uncommon features include intralobular reticular opacities, pleural enhancement, <a href="/articles/pulmonary-cavities-1">pulmonary c</a><a href="/articles/pulmonary-cavity">avities</a> and <a href="/articles/centrilobular-lung-nodules-1">c</a><a href="/articles/centrilobular-lung-nodules-1">entrilobular nodules</a>.</p>- +<li>peribronchial infiltration and areas of <a href="/articles/air-space-opacification-1">consolidation</a>. </li>
- +</ul><p>A pleural effusion may be present in approximately 40% of patients. </p><p>Other uncommon features include intralobular reticular opacities, pleural enhancement, <a href="/articles/pulmonary-cavities-1">pulmonary c</a><a href="/articles/pulmonary-cavities-1">avities</a> and <a href="/articles/centrilobular-lung-nodules-1">c</a><a href="/articles/centrilobular-lung-nodules-1">entrilobular nodules</a>.</p>
References changed:
- 6. Beigelman-Aubry C, Godet C, Caumes E. Lung infections: the radiologist's perspective. (2012) Diagnostic and interventional imaging. 93 (6): 431-40. <a href="https://doi.org/10.1016/j.diii.2012.04.021">doi:10.1016/j.diii.2012.04.021</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/22658280">Pubmed</a> <span class="ref_v4"></span>
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