Chest
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Comparative Study
Reversed halo sign: high-resolution CT scan findings in 79 patients.
The purpose of this study was to evaluate the high-resolution CT (HRCT) scan findings of patients with the reversed halo sign (RHS) and to identify distinguishing features among the various causes. ⋯ The presence of nodular walls or nodules inside the halo of the RHS is highly suggestive of granulomatous diseases.
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Acute eosinophilic pneumonia (AEP) is an idiopathic disease characterized by pulmonary eosinophilia. Because the fraction of exhaled nitric oxide (Feno) is a surrogate of eosinophilic inflammation, we evaluated the levels, changed treatments, and the diagnostic role of Feno in patients with AEP. ⋯ The Feno level was significantly higher in patients with AEP than in those without AEP. Feno measurement can be used as a diagnostic tool to differentiate patients with AEP from those without AEP.
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The accuracy of combined clinical examination (CE) and chest radiography (CXR) (CE + CXR) vs thoracic ultrasonography in the acute assessment of pneumothorax, hemothorax, and lung contusion in chest trauma patients is unknown. ⋯ Thoracic ultrasonography as a bedside diagnostic modality is a better diagnostic test than CE and CXR in comparison with CT scanning when evaluating supine chest trauma patients in the emergency setting, particularly for diagnosing pneumothoraces and lung contusions.