MIR31HG and hepatocellular carcinoma: To further explore the clinical significance of MIR31HG expression in HCC, we divided all the patients into two groups according to MIR31HG expression: the MIR31HG high expression group (above the median MIR31HG expression, n = 21) and the MIR31HG low expression group (below the median MIR31HG expression, n = 21).