Source:http://linkedlifedata.com/resource/umls/id/C0205082
NCI: Intensely or extremely bad or unpleasant in degree, quality, or extent; life threatening.,NCI: A term used to describe cells that look abnormal under a microscope. These cells are more likely to grow and spread quickly than cells in low-grade cancer or in growths that may become cancer.,NCI: The fifth (highest) level of severity in an ordered list based on a five-level scale of minimal, mild, moderate, marked, and severe.,NCI: Used to describe tumor samples that exhibit poorly differentiated or undifferentiated cells. They are generally expected to be fast growing and aggressive.