Source:http://linkedlifedata.com/resource/umls/id/C0034896
MSH: The distal segment of the LARGE INTESTINE, between the SIGMOID COLON and the ANAL CANAL.,NCI: The last several inches of the large intestine closest to the anus.,NCI: The terminal portion of the gastrointestinal tract, extending from the rectosigmoid junction to the anal canal. (NCI),NCI: The terminal portion of the gastrointestinal tract, extending from the rectosigmoid junction to the anal canal.