Table 1.

Risk Assessment

	Tumor size	Mitotic count
Very low risk	< 2 cm	<5/50 HPFs
Low risk	2–5 cm	<5/50 HPFs
Intermediate risk	< 5 cm	6–10/50 HPFs
	5–10 cm	<5/50 HPFs
High risk	> 5 cm	>5/50 HPFs
	>10 cm	any mitotic rate
	any size	>10/50 HPFs

Data according to Fletcher et al.13