Ground-glass opacity in sarcoidosis

Ground-glass opacity seen on a chest X-ray or CT can be an early sign of sarcoidosis and may indicate bilateral lymph-node involvement. As the disease progresses, the same areas may show a fine interstitial pattern (the interstitium is normally not visible on a plain chest X-ray) and subtle micronodular shadows. Later, a typical reticular pattern may develop in both lower and peripheral lung regions.

Additional findings can include small cystic changes, sometimes described as honeycombing, and enlarged airways caused by traction bronchiectasis. Imaging findings must always be interpreted together with symptoms, lung-function testing and the complete clinical assessment.

This information is educational and does not replace a medical examination or medical advice.