For instance, hepatic dysplastic nodule, adenoma, and cavernous hemangioma, as well as liver metastasis without known primary tumor, express little or no organic anion-transporting polypeptide (OATP) and thus may resemble HCC on hepatocyte-phase images, especially those subtypes of high differentiation expressing a little OATP. This evidence concerns the gene SLCO1A2 and adenoma.