Ground-Glass Opacity

Ground-glass opacity is a descriptive radiology term for hazy increased density in the lung. It is not a diagnosis by itself. It can be seen with infection, inflammation, fluid, scarring, hemorrhage, or some persistent lung lesions.

Also seen as: ggo, ground glass change.

If you are trying to place this wording inside the bigger picture of your report, start with the radiology findings hub and then compare it with the related symptom and report phrase pages below.

This term becomes more or less important depending on its size, location, severity, associated symptoms, and whether it is new compared with earlier imaging. Radiologists usually expect the finding to be read alongside the rest of the report instead of in isolation.

Ground-glass opacity is a common chest CT term, but its importance depends on pattern and persistence.

• Infection or inflammation
• Pulmonary edema or hemorrhage
• Atelectatic or reactive change
• A persistent lesion needing closer evaluation

• The opacity persists or grows
• A solid component develops
• There are concerning associated findings or severe symptoms

• Interpret the finding together with symptoms
• Repeat CT in selected cases
• Use pattern and change over time to guide next steps

A radiology finding name can sound more definite than it really is. Many findings describe an imaging pattern, not a final diagnosis, and many turn out to be less urgent once doctors match the wording with your symptoms, exam, and any earlier studies.

• Patchy ground-glass opacity in the right lower lobe.

  See phrase explanation

• Persistent ground-glass nodule, interval follow-up recommended.

  See phrase explanation

These educational symptom pages explain search-intent questions that often overlap with this finding.

Educational information only. Always consult your clinician for medical advice.

This page is educational only and should be used to understand report language, not to diagnose a condition or replace clinician review.