The anatomic distribution of bronchopneumonia and lobar pneumonia.
Bronchopneumonia Vs lobar pneumoniaPatchy infiltrates consistent with a bronchopneumonia from a bacterial infection. Typical organisms include Streptococcus pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa, Hemophilus influenzae, Klebsiella pneumoniae, among others.
CXR: bronchopneumonia
The cut surface of this lung demonstrates the typical appearance of a bronchopneumonia with areas of tan-yellow consolidation. Remaining lung is dark red because of marked pulmonary congestion. Bronchopneumonia (lobular pneumonia) is characterized by patchy areas of pulmonary consolidation. These areas become almost confluent in the left lower lobe on the bottom left of the photograph. The areas of consolidation are firmer than the surrounding lung.
Bronchopneumonia
Two lung abscesses, one in the upper lobe and one in the lower lobe of this left lung. An abscess is a complication of severe pneumonia, most typically from virulent organisms such as S. aureus.
Abscesses complicating bronchopneumonia
At the left the alveoli are filled with a neutrophilic exudate that corresponds to the areas of consolidation seen grossly with the bronchopneumonia. This contrasts with the aerated lung on the right of this photomicrograph.
Bronchopneumonia
At high magnification, the alveolar exudate of mainly neutrophils is seen. The surrounding alveolar walls have capillaries that are dilated and filled with RBC's. Such an exudative process is typical for bacterial infection. This exudate gives rise to the productive cough of purulent yellow sputum seen with bacterial pneumonias.
Bronchopneumonia