calculated prostate tumorous lesion area measurement area of prostate occupied by tumorous lesions to total prostate area ratio 2012-07-03T10:25:25Z A calculated measurement in which the area of the prostate gland occupied by tumorous lesions is divided by the total area of the prostate gland, and the result presented as a ratio, fraction, quotient or 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:0000890 JSmith area of prostate occupied by tumorous lesions as percentage of total prostate area clinical_measurement_ontology