|G2 (Moderately differentiated)
|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)
|Describes tumor cells that generally have lost most of the appearance of normal cells. They tend to grow and spread.
|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)
|A morphologic qualifier indicating that the grade of a neoplasm cannot be assessed.