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LI-RADS categories: concepts, definitions, and criteria
Cynthia Santillan1, Victoria Chernyak2, Claude Sirlin3
1Liver Imaging Group, University of California San Diego, San Diego, CA, USA. csantillan@ucsd.edu.
Abdominal Radiology (New York)
|October 18, 2017
Summary
The Liver Imaging Reporting and Data System (LI-RADS) offers standardized categories for assessing hepatocellular carcinoma (HCC) risk. This system helps radiologists communicate findings from definitely benign to definitely HCC, including specific categories for other concerns.
Area of Science:
- Radiology
- Hepatology
- Oncology
Background:
- Standardized reporting is crucial for accurate liver lesion assessment.
- Hepatocellular carcinoma (HCC) risk stratification requires consistent communication among clinicians.
- Current systems need to encompass a spectrum of findings, including benign, malignant, and indeterminate lesions.
Purpose of the Study:
- To elucidate the Liver Imaging Reporting and Data System (LI-RADS) categories.
- To detail the criteria for each LI-RADS category.
- To highlight revisions in LI-RADS categories compared to previous versions.
Main Methods:
- Review of the LI-RADS classification system.
- Analysis of criteria for categorizing liver observations.
- Comparative assessment of LI-RADS versions.
Main Results:
- LI-RADS provides categories from definitely benign to definitely HCC.
- Specific categories address non-categorizable observations, non-HCC malignancy concerns, and tumor in vein.
- The study outlines updated criteria and category changes from prior LI-RADS versions.
Conclusions:
- LI-RADS standardizes the assessment and communication of HCC likelihood.
- The system facilitates clear reporting of liver lesion characteristics.
- Understanding LI-RADS categories and their evolution is vital for accurate patient management.
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