percentage of study population displaying colorectal tumors at a point in time percentage of study population displaying malignant colorectal tumors at a point in time 2013-09-26T12:41:42Z CMO:0001805 MESH:D015179 RDO:9000031 The number of individuals in a study population which display malignant colorectal tumors at a certain point in time compared to the total number of individuals in the study population, expressed as a percentage. Malignant colorectal tumors are abnormal growths of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function, which display the properties of anaplasia, invasiveness and metastasis, and which occur in the large intestine, the distal portion of the alimentary canal, especially in the colon and/or rectum, the segment of the large intestine between the cecum and the anal canal. clinical_measurement_ontology colorectal adenocarcinoma prevalence jsmith malignant colorectal cancer prevalence malignant colorectal neoplasm prevalence malignant colorectal tumor prevalence