A histologic grade according to AJCC 7th edition indicating that the tumor cells are undifferentiated and do not look like normal cells and tissue.
Instance info
definition source
https://www.cancer.gov/about-cancer/diagnosis-staging/prognosis/tumor-grade-fact-sheet
editor preferred term
G4: Undifferentiated
has curation status
http://purl.obolibrary.org/obo/IAO_0000120
ontology term requester
NCI BBRB
term editor
Chris Stoeckert, Helena Ellis