What is the role of CT scanning in the evaluation for community-acquired pneumonia (CAP)?

Updated: Oct 31, 2019
  • Author: Stephanie L Baer, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Obtain a computed tomography (CT) scan of the chest if pneumonia is clinically suspected despite persistently negative chest radiographic findings to examine for viral, atypical, or mycobacterial pneumonia, particularly in immunocompromised hosts. When an underlying bronchogenic carcinoma is suspected or if any abnormalities are not consistent with the diagnosis of pneumonia, CT is helpful to examine for structural lung disease or malignancy. Immunocompromised patients may benefit from further narrowing of the differential diagnoses with chest CT scanning.

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