Source:http://linkedlifedata.com/resource/umls/id/C0034115
MSH: A procedure in which fluid is withdrawn from a body cavity via a trocar and cannula, needle, or other hollow instrument.,NCI: A procedure in which a thin needle or tube is put into the abdomen to remove fluid from the peritoneal cavity (the space within the abdomen that contains the intestines, the stomach, and the liver).