A premalignant neoplastic nodular lesion of the liver that usually measures less than 15 mm. It is found during microscopic examination of liver tissues, usually in cirrhotic livers. Based on the degree of atypia, it is classified as low or high grade. The disease is liver dysplastic nodule (EFO_0007834). Also known as: DN, Dysplastic Nodule of Liver, Dysplastic Nodule of the Liver, Hepatic DN, Hepatic Dysplastic Nodule.