Table 1.

Baseline characteristics

Baseline characteristics	Frequency
Number of patients	833
Number of tumors	841
Median age (years)	60
Affected side
Left	416
Right	408
Unknown	17
Median tumor size (mm)	12
Median tumor size in situ on LCNB (range)	12 (1–80 mm)
Median tumor size invasive on LCNB (range)	12 (2–82 mm)
Histology (on LCNB)
In situ
DCIS	307
LCIS	3
Both	2
Invasive
Ductal	420
Lobular	69
Both	4
Other breast malignancy	29
Unclear	7