umls-concept:C0227391 | skos:definition | NCI: The S-shaped section of the colon that connects to the rectum.,NCI: The portion of the colon that connects to the descending colon above and the rectum below. (NCI),MSH: A segment of the COLON between the RECTUM and the descending colon.,NCI: The portion of the colon that connects to the descending colon above and the rectum below. (On-line Medical Dictionary) | lld:umls |