What does a chest x-ray show in pneumonia?

What does a chest x-ray show in pneumonia?

• A. Consolidation of lung tissue
• B. Hyperinflation
• C. No abnormalities
• D. Pleural effusion only

Answer: (A)

In pneumonia, the chest radiograph shows consolidation of lung tissue. This happens because the air spaces (alveoli) fill with inflammatory exudate, pus, and fluid, making the affected area appear denser on the film. The consolidation can be in a single lobe or be patchy across multiple areas, and you may sometimes see air bronchograms—air-filled bronchi visible against the surrounding opaque tissue—which helps confirm alveolar filling. Hyperinflation is more typical of obstructive processes like asthma or COPD, not pneumonia. A normal X-ray would not fit pneumonia, since radiographic changes usually accompany the infection. Pleural effusion can occur with pneumonia but is not the defining feature; when present, it shows as fluid around the lung rather than the primary alveolar consolidation.

In pneumonia, the chest radiograph shows consolidation of lung tissue. This happens because the air spaces (alveoli) fill with inflammatory exudate, pus, and fluid, making the affected area appear denser on the film. The consolidation can be in a single lobe or be patchy across multiple areas, and you may sometimes see air bronchograms—air-filled bronchi visible against the surrounding opaque tissue—which helps confirm alveolar filling.

Hyperinflation is more typical of obstructive processes like asthma or COPD, not pneumonia. A normal X-ray would not fit pneumonia, since radiographic changes usually accompany the infection. Pleural effusion can occur with pneumonia but is not the defining feature; when present, it shows as fluid around the lung rather than the primary alveolar consolidation.