Hepatic stiffness measurement by using MR elastography: prognostic values after hepatic resection for hepatocellular carcinoma

To evaluate prognostic value of hepatic stiffness (HS) measurement using MR elastography (MRE) in patients with hepatocellular carcinoma (HCC) treated by hepatic resection (HR). We enrolled 144 patients with Barcelona Clinic Liver Cancer stage A HCCs initially treated by HR who underwent preoperative liver MRE between January 2010 and June 2013. HS values were measured using MRE. Receiver operating characteristics (ROC) and multivariate logistic regression analyses were used to determine significant predictive factors for posthepatecomy liver failure (PHLF). Overall survival (OS) was analyzed by evaluating prognostic factors using the Kaplan-Meier method and Cox proportional hazard regression model. After HR, 43 patients (29.9 %) experienced PHLF. HS values were significant predictive factors for PHLF. In ROC analysis, the area under the curve of HS was 0.740 (P = 0.001) for PHLF. Thirty-one patients had HS values ae 4.02 kPa; the estimated 1, 3, 5-year survival were 90.0 %, 74.7 % and 65.4 %, respectively, versus 98.1 %, 96.5 % and 96.5 % in 113 patients with HS values < 4.02 kPa (P = 0.015). An HS value ae 4.02 kPa was the only significant affecting factor for OS. HS values measured by MRE could predict PHLF development post-HR. Furthermore, an HS value ae4.02 kPa was a significant predicting factor for poor OS post-HR. Hepatic stiffness value was a predictive factor for developing posthepatectomy liver failure Hepatic stiffness value was a significant affecting factor for OS Hepatic stiffness value ae 4.02 kPa was a predictive factor for poor OS.