histologic grade according to AJCC 7th edition
metadata complete
G4: Undifferentiated
NCI BBRB
https://www.cancer.gov/about-cancer/diagnosis-staging/prognosis/tumor-grade-fact-sheet
G4
A histologic grade according to AJCC 7th edition indicating that the tumor cells are undifferentiated and do not look like normal cells and tissue.
Chris Stoeckert, Helena Ellis
G4: Undifferentiated