Table 4.

Univariable analysis of lesion size (maximum dimension on imaging in mm) and incidence of ipsilateral invasion by DCIS grade (Mann-Whitney U test).

DCIS grade	All cases	Invasion		No invasion		p-value
	Median size	Median size	Range	Median size	Range
High	32	38.5	3–95	29.5	3–162	0.19
Intermediate	20	35	4–80	18	3–121	0.31
Low	16	18	12–50	15	3–200	0.38
All grades	22	37	3–95	20	3–200	0.02