Table 1 LI-RADS Categories of Nodules
From: LI-RADS v2017 for liver nodules: how we read and report
Category | Judgement | Rationale |
|---|---|---|
LR-1 | Definitely benign | 100% certainty the observation is benign |
LR-2 | Probably benign | High probability the observation is benign |
LR-3 | Intermediate probability for HCC | Both HCC and benign entity have moderate probability. Observation does not meet criteria for other LR category |
LR-4 | Probably HCC | High probability the observation is HCC, but no 100% certainty |
LR-5 | Definitely HCC | 100% certainty the observation is HCC |
LR-M | Probably malignant, not specific for HCC | Observation is probably malignant, but imaging features not specific for HCC (suggestive of non-HCC malignancy) |
LR-TIV | Definitely tumour in vein | Unequivocal enhancing soft-tissue tumour in vein. Visualization of a parenchymal mass is not required. |
LR-TR | Treated observation | Any observation, which has undergone loco-regional treatment |
LR-NC | Not characterizable | Observation cannot be characterized due to image degradation or omission of scans/pulse sequences |