Which imaging finding is commonly seen in ARDS?

Which imaging finding is commonly seen in ARDS?

• A. Pleural effusions
• B. Pneumothorax
• C. Ground-glass opacities
• D. Lung hyperinflation

Answer: (C)

In ARDS, the imaging hallmark is diffuse bilateral ground-glass opacities. This pattern reflects edema and inflammation spilling into the alveoli and interstitium because the alveolar-capillary barrier becomes leaky. The result is hazy, increased opacity that often involves both lungs, especially the dependent regions, while still preserving some underlying airway markings. Ground-glass changes can be seen early and may progress to more confluent opacities or layering airspace shadows as the condition evolves. Pleural effusions and pneumothorax can occur but are not the defining feature of ARDS; effusions tend to be less prominent unless fluid overload is present, and pneumothorax is a potential complication rather than a typical finding. Lung hyperinflation is not characteristic of ARDS, since the lungs are not typically overexpanded in this condition.

In ARDS, the imaging hallmark is diffuse bilateral ground-glass opacities. This pattern reflects edema and inflammation spilling into the alveoli and interstitium because the alveolar-capillary barrier becomes leaky. The result is hazy, increased opacity that often involves both lungs, especially the dependent regions, while still preserving some underlying airway markings. Ground-glass changes can be seen early and may progress to more confluent opacities or layering airspace shadows as the condition evolves.

Pleural effusions and pneumothorax can occur but are not the defining feature of ARDS; effusions tend to be less prominent unless fluid overload is present, and pneumothorax is a potential complication rather than a typical finding. Lung hyperinflation is not characteristic of ARDS, since the lungs are not typically overexpanded in this condition.