stomach tumor measurement stomach tumor diameter 2013-11-08T18:05:26Z CMO:0001889 JSmith The length of a straight line passing through the center and connecting opposite points on the circumference of a circle circumscribing a single tumor or an area occupied by tumors of the stomach. A tumor is an abnormal growth of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function. The stomach is the curved, muscular, saclike structure that is an enlargement of the alimentary canal between the esophagus and the small intestine, and that temporarily holds food and secretes proteases and strong acids to aid in food digestion. clinical_measurement_ontology gastric tumor diameter