area of liver occupied by tumorous lesions as percentage of total liver area 2012-09-04T02:04:21Z A calculated measurement of the area of the liver occupied by tumorous lesions compared to the total area of the liver, expressed as a percentage. A tumorous lesion is one which is or has the potential to become a tumor, that is, a neoplasm or new growth of tissue in which cell multiplication is more or less uncontrolled and progressive. Tumorous lesions include tumors and preneoplastic lesions, as well as hyperplastic lesions composed of histologically normal cells. CMO:0001074 VT:0010547 clinical_measurement_ontology jsmith percent tumorous foci area in liver true liver tumorous lesion area to total liver area ratio