Low functional liver imaging score is associated with poor prognosis following hepatectomy for hepatocellular carcinoma.

Liver function affects the prognosis of patients with hepatocellular carcinoma (HCC). This study aimed to investigate the prognostic impact of the functional liver imaging score (FLIS), assessed using gadoxetic acid-enhanced magnetic resonance imaging, on long-term outcomes following hepatectomy for HCC. The FLIS was assessed in 235 patients who underwent initial hepatectomy for HCC. The relationship between FLIS and prognosis was retrospectively analyzed. The FLIS was 6 in 185, and 2-5 in 50, patients. The 5-year recurrence-free and overall survival rates were 43.6% and 76.4% in patients with an FLIS of 6, and 23.0% and 42.4% in patients with an FLIS of 2-5, respectively; both recurrence-free and overall survival were significantly better in patients with an FLIS of 6 (P = 0.012 and 0.001, respectively). Multivariable analyses revealed that microvascular invasion (hazard ratio: 3.611; P = 0.002) and an FLIS of 2-5 (hazard ratio: 2.558; P = 0.027) were independently associated with shorter overall survival. After propensity-score matching, overall survival was significantly better in patients with an FLIS of 6. A low FLIS was significantly associated with poor prognosis following initial hepatectomy for HCC, suggesting that surgical indications must be carefully considered in patients with a low FLIS.