Table 1.

Clinicopathologic Characteristics of Ductal Carcinoma in situ Cases.

	DCIS (all cases)	Phenotype1
		Luminal A	Luminal B	HER-2	Triple negative
Total Number	n=27	16 (62%)	4 (15%)	3 (12%)	3 (12%)
Age (years)
median (range)	38 (18–74)	45	37	33	37
<=40	19 (70%)	10 (62%)	4 (100%)	2 (67%)	2 (67%)
>40	8 (30%)	6 (38%)	0	1 (33%)	1 (33%)
Race
White	14 (52%)	9 (57%)	2 (50%)	2 (50%)	1 (25%)
Black	7 (26%)	4 (25%)	0 (0%)	0 (0%)	2 (50%)
Asian	2 (7%)	1 (6%)	1 (25%)	0 (0%)	0 (0%)
Hispanic	1 (4%)	1 (6%)	0 (0%)	0 (0%)	0 (0%)
Other	3 (11%)	1 (6%)	1 (25%)	1 (25%)	0 (0%)
Nuclear Grade
1	1 (4%)	1 (6%)	0 (0%)	0 (0%)	0 (0%)
2	14 (52%)	11 (69%)	2 (50%)	0 (0%)	0 (0%)
3	12 (44%)	4 (25%)	2 (50%)	3 (100%)	3 (100%)
Necrosis
no	6 (22%)	5 (31%)	0 (0%)	0 (0%)	0 (0%)
yes	21 (78%)	11 (69%)	4 (100%)	3 (100%)	3 (100%)
Multifocality
no	17 (63%)	11 (69%)	2 (50%)	2 (67%)	2 (67%)
yes	10 (37%)	5 (31%)	2 (50%)	1 (33%)	1 (33%)
Size (cm)
mean	2.4	1.7	4.2	4.8	2.8
<1	7 (26%)	6 (38%)	1 (25%)	0 (0%)	0 (0%)
>1	9 (34%)	7 (44%)	0 (0%)	0 (0%)	1 (33%)
>2	2 (7%)	1 (6%)	0 (0%)	1 (33%)	0 (0%)
>3	2 (7%)	1 (6%)	0 (0%)	0 (0%)	1 (33%)
>4	5 (19%)	1 (6%)	3 (75%)	1 (33%)	0 (0%)
NR	2 (7%)	0 (0%)	0 (0%)	1 (33%)	1 (33%)
Recurrence
no	25 (93%)	16 (100%)	0 (0%)	2 (67%)	2 (67%)
yes	2 (7%)	0 (0%)	0 (0%)	1 (33%)	1 (33%)
Associated Infiltrating Carcinoma
no	24 (89%)	15 (94%)	0 (0%)	0 (0%)	1 (33%)
yes	3 (11%)	1 (6%)	0 (0%)	0 (0%)	2 (67%)

(Abbreviations: cm=centimeter; DCIS=ductal carcinoma in situ; HER-2=human epidermal growth factor 2; n=number; NR=not reported;

¹The phenotype for one case was unable to be determined.