Table 1.

Van Nuys prognostic index scoring system^*

Predictor	Score
	1	2	3
Tumour size (mm)	⩽15	16-40	⩾41
Margin width (mm)	⩾10	1-9	<1
Pathological classification	Not high grade, no necrosis (nuclear grades 1 and 2)	Not high grade, with necrosis (nuclear grades 1 and 2)	High grade with or without necrosis (nuclear grade 3)

^*Scores (1-3) for each of the predictors are totalled to yield an index score ranging from a low of 3 to a high of 9. Reproduced with permission⁸