Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Common pathogens include Staphylococcus, Pneumococcus (Streptococcus pneumonia), and Haemophilus influenza. Bacterial pneumonia usually has primarily alveolar involvement without airway involvement. Pneumatoceles may form during the recuperative phase and are transient accumulations of interstitial air that have escaped through necrotic bronchial foci and are usually of little significance, resolving over time.
Homogeneous consolidation of all or part of a lobe with air bronchograms. Lung volume is preserved. Bacterial infections are usually in the periphery of the lung while viral infections are more commonly in the center of the lung in a perihilar location. Effusions are often seen with bacterial pneumonia.
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