Table 2.

Bryne’s criteria (1992)

Morphologic features	Score 1	Score 2	Score 3	Score 4
Degree of keratinisation	High	Moderate	Minimal	No
Nuclear polymorphism	Little	Moderate	Abundant	Extreme
Pattern of invasion	Pushing infiltrating borders	Infiltrating solid, cord or band	Small group or cord of cells	Marked and wide cellular dissociation
Host response	Marked	Moderate	Slight	None