colorectal tumor incidence/prevalence measurement percentage of study population displaying colorectal tumors at a point in time 2013-09-26T12:38:56Z CMO:0001804 MESH:D015179 The number of individuals in a study population which display colorectal tumors at a certain point in time compared to the total number of individuals in the study population, expressed as a percentage. Colorectal tumors are abnormal growths of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function, 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 cancer prevalence colorectal neoplasm prevalence colorectal tumor prevalence jsmith