organ tumorous lesion measurement pituitary gland tumorous lesion measurement 2012-08-21T04:09:27Z CMO:0001034 Measurement of a pituitary gland lesion 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. The pituitary gland is the gland located at the base of the brain in vertebrates that produces a number of hormones, including those that regulate growth and reproductive functions. Tumorous lesions include tumors, preneoplastic lesions, and hyperplastic lesions composed of histologically normal cells. clinical_measurement_ontology jsmith