Derived Grade

NAACCR Item

NAACCR #1975
Code Description
1 G1: Well differentiated
2 G2: Moderately differentiated: includes adenoid cystic carcinoma without basaloid (solid) pattern
3 G3: Poorly differentiated: includes adenoid cystic carcinoma with basaloid (solid) pattern
4 G4: Undifferentiated
9 Grade cannot be assessed (GX); Unknown