G2 (Moderately differentiated) |
Moderately Differentiated |
C14162 |
NCI Thesaurus |
Describes tumor cells that have lost some of the appearance of normal cells. They tend to grow and spread at a faster rate than well differentiated tumor cells. |
G3 (Poorly differentiated) |
Poorly Differentiated |
C14167 |
NCI Thesaurus |
Describes tumor cells that generally have lost most of the appearance of normal cells. They tend to grow and spread. |
G4 (Undifferentiated/anaplastic) |
Undifferentiated |
C14176 |
NCI Thesaurus |
A term used to describe cells or tissues that do not have specialized ("mature") structures or functions. Undifferentiated cancer cells often grow and spread quickly. |
GX (Grade cannot be assessed) |
Grade X |
C113730 |
NCI Thesaurus |
A morphologic qualifier indicating that the grade of a neoplasm cannot be assessed. |