Indicates normal imaging findings; completely negative study
Expansion
No Abnormality Detected
Purpose
Concise statement that all visible structures appear normal
Clinical Context
NAD is a definitive statement of normality. In screening contexts (e.g., lung cancer screening), NAD means no suspicious findings.
Related Terms
- NFA:
- Normal:
- Negative study:
- Unremarkable:
Key Points
- NAD should only be used when you have thoroughly reviewed the entire study; negative studies are not always clinically reassuring if clinical context suggests otherwise