“…Nowadays, serum alpha-fetoprotein (AFP) and ultrasonography (US) are clinically adopted for HCC screening (Masuzaki et al, 2012;Zhu et al, 2013). Nevertheless, serum AFP in about 40% of patients always remains at a low level ( < 400 ng/mL) (Farinati et al, 2006;Zhang et al, 2010), and US also has limitations in further detection of the features of liver nodules (Ward and Robinson, 2002).…”