AIM:To investigate the expression of cyclooxygenase-2 (COX-2) and CCAAT/enhancer binding protein β (C/EBP β) and to analyze their correlation with the clinical pathological parameters in hepatocellular carcinoma (HCC).METHODS:The expression of COX-2 and C/EBP β in 59 HCC tissue specimens and 18 normal hepatic tissue specimens were detected by immunohistochemistry.RESULTS:The positive rate of COX-2 expression in HCC was 72.9% (P<0.05).COX-2 expression was correlated with Child-Pugh classification,tumor diame...