Table 3.

Features associated with presence of in situ or invasive carcinoma at surgical specimen margins

Feature analysed	Number of cases with cancer at margins (%)	p value
Breast density
Density “c” + density “d”	3/6 (50)	0.05
Density “a” + density “b”	1/17 (5.8)
Clinical presentation
Palpable lump	2/14 (14.2)	0.68
Non-palpable	2/9 (22.2)
Lesion size on US
<1.5 cm	2/10 (20)	0.48
≥1.5 cm	2/13 (15.3)
Volume of specimen
<50 ml	1/10 (10)	0.80
≥50 ml	3/13 (23)