Liver Imaging Reporting and Data System Version 2018: What Radiologists Need to Know

Area of Science:

• Radiology
• Oncology
• Hepatology

Background:

• Hepatocellular carcinoma (HCC) is the most common primary liver cancer.
• Accurate diagnosis and standardized reporting are crucial for effective HCC management.
• Existing imaging reporting systems require updates to reflect advancements in diagnosis and treatment.

Purpose of the Study:

• To review the Liver Imaging Reporting and Data System version 2018 (LI-RADS v2018).
• To highlight the key features and categories within LI-RADS v2018 for HCC diagnosis and management.
• To emphasize the role of LI-RADS in standardizing communication and improving patient outcomes.

Main Methods:

• Review of the LI-RADS v2018 guidelines and literature.
• Analysis of major and ancillary imaging features for HCC diagnosis.
• Examination of LI-RADS categories for untreated and treated liver lesions.

Main Results:

• LI-RADS v2018 utilizes 5 major and several ancillary features for HCC diagnosis.
• It provides 8 unique categories for untreated liver lesions based on CT and MRI findings.
• LI-RADS v2018 includes 4 treatment response categories for post-therapy HCC.

Conclusions:

• LI-RADS v2018 enhances standardized interpretation and reporting of liver lesions.
• The system facilitates better communication between radiologists and clinicians.
• Continuous updates to LI-RADS improve HCC diagnosis, management, and patient outcomes.