Table 1.

The USC/VNPI scoring system.

Van Nuys Prognostic Index
Parameter	Score 1	Score 2	Score 3
Van Nuys Classification	Group 1	Group 2	Group 3
	Non high nuclear grade without necrosis	Nonhigh nuclear grade with necrosis	High nuclear gradewith or without necrosis
Margins	≥10 mm	1–9 mm	<1 mm
Size	<15 mm	16–40 mm	>40 mm
Age	>60	40–60	<40

Modified from Silverstein; Ductal Carcinoma in situ of the breast 2nd ed. 2002.