CEACAM5 and hepatocellular carcinoma: Few cases of gastric HAC had been reported so far.3 Differential diagnosis with HCC may be complicated, given their similarity in terms of histological presentation.3 Immunohistochemistry staining provides specific findings that may be helpful in this setting.3 Positive AFP and CEA stains are found in the majority of HACs (91.6% and 78.7%).