Concept:

• Subcategory of LR-5 that meets AASLD criteria for HCC

Definition:

• 10-19 mm observation that meets AASLD criteria for HCC

Criteria

• 10-19 mm observation
• Arterial phase hyperenhancement
• Washout appearance
• Visibility as discrete nodule at antecedent surveillance ultrasound

If unsure about category

• Do not categorize as LR-5us
• Characterize as LR-4 instead using tie breaker rules

Reporting:

• Must be reported

Management:

• Treatment without biopsy is appropriate
• Contributes to radiologic T-staging
• Does not meet OPTN criteria for HCC. Hence, does not provide HCC exception points for determining priority on liver transplantation list