Selection criteria for radiofrequency ablation for colorectal liver metastases in the era of effective systemic therapy: a clinical score based proposal

Table 6 Prognostic scoring system providing probabilities of survival outcomes based on presence (+) or absence (-) of four criteria for improving patient selection for RFA treatment of liver-only CLM in the era of effective systemic therapies ¹

Abbreviations: CEA, carcinoembryonic antigen; CLM, colorectal liver metastases; no, not observed; PR, partial remission; RFA, radiofrequency ablation.
¹outcome probabilities are based on adjusted Kaplan-Meyer calculations in this study cohort (n = 88). ²score indicates the sum of present criteria. ³subgroups represent combinations of present and absent criteria in patients scoring 1–3. ⁴RECIST-defined response to the immediate preceding systemic therapy regimen before RFA treatment. ⁵after decrease of ≥30% in size following the immediate preceding systemic therapy regimen before RFA treatment.

ISSN: 1471-2407