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Table 2 Biological features of 272 DCIS

From: Intra-operative radiological margins assessment in conservative treatment for non-palpable DCIS: correlation to pathological examination and re-excision rate

	n. (%)		Non-negative	Negative
			Margins^a	Margins
			(N = 53)	(N = 219)
Age
24 ≤50	81	(29.7)	16	65
>50	191	(70.3)	37	154
ER status
Negative	42	(25.6)	6	36
Positive	122	(74.4)	30	92
Unknown	108
PgR status
Negative	63	(38.4)	13	50
Positive	101	(61.6)	22	79
Unknown	108
Ki-67 proliferative index
<20%	140	(87.5)	31	109
≥20%	20	(12.5)	5	15
Unknown	112
HER2 status
Amplified	16	(30.2)	9	7
Not amplified	37	(69.8)	8	29
Unknown	219
Grading
G1	47	(17.8)	2	45
G2	115	(43.9)	22	93
G3	100	(38.2)	23	77
Unknown	10

ER: Estrogen Receptor.
PgR: Progesterone Receptor.
HER2: Human Epidermal growth factor Receptor 2.
^a “Non-negative” margins include margins classified either as “positive” or as “close” (see text).

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