liver tumorous lesion area measurement area of liver occupied by tumorous lesions 2012-09-04T02:03:40Z A measurement of the total extent of the two-dimensional surface of the liver occupied by tumorous lesions, or a measurement of the total extent of a two-dimensional cross-section through the liver occupied by tumorous lesions. 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:0001072 clinical_measurement_ontology jsmith