UW Emergency Radiology
Lung-RADS™ Version 1.1
| Classification | Description | Notes |
| 0
(Incomplete) |
Additional lung cancer screening CT images and/or comparison to prior chest CT examinations is needed | |
| 1
(Negative) |
No nodules and definitely benign nodules |
Continue annual screening with LDCT in 12 months
|
| 2
(Benign Appearance or Behavior) |
Nodules with a very low likelihood of becoming a clinically active cancer due to size or lack of growth | |
| 3
(Probably Benign) |
Probably benign finding(s) – short term follow up suggested; includes nodules with a low likelihood of becoming a clinically active cancer |
6 month LDCT
|
| 4A
(Suspicious) |
Findings for which additional diagnostic testing and/or tissue sampling is recommended |
3 month LDCT; PET/CT may be used when there is a ≥ 8 mm solid component |
| 4B
(Suspicious) |
chest CT with or without contrast, PET/CT and/or tissue sampling depending on the *probability of malignancy and comorbidities. PET/CT may be used when there is a ≥ 8 mm solid component. | |
| S (Significant – Other) | ||
| C (Prior Lung Cancer) |
*Lung cancer risk calculator: https://www.uptodate.com/contents/calculator-solitary-pulmonary-nodule-malignancy-risk-brock-university-cancer-prediction-equation
References:
McKee, B. J., et al. (2015). “Performance of ACR Lung-RADS in a clinical CT lung screening program.” J Am Coll Radiol 12(3): 273-276.