The assessment of the grade of differentiation of a tumour expressed as the extent to which the tumour resembles the normal tissue at that site.
National Codes:
| GX | Grade of differentiation is not appropriate or cannot be assessed | 
| G1 | Well differentiated | 
| G2 | Moderately differentiated | 
| G3 | Poorly differentiated | 
| G4 | Undifferentiated / anaplastic | 
References:
National Cancer Dataset Version 1.3_ISB October 2002
This attribute is also known by these names:
| Context | Alias | 
|---|---|
| plural | GRADES OF DIFFERENTIATION | 

