Table 4 Clinical, pathological, and radiological findings of all 34 pure LN

Case#	Age (years)	Race	Menopause	History of breast cancer				Excision	MRI	Reason	Histology
				C/I	C/C	P/I	P/C
1^a	60	CA	Post	ILC	No	No	No	ILC	NME	Staging	LCIS
2^a	66	CA	Post	ILC	No	No	No	Benign	NME	Staging	LCIS
3^a	63	CA	Post	IC-NST	No	No	IC-NST	Benign	Mass	Staging	ALH
4^a	46	CA	Pre	No	ILC	No	No	ADH/LCIS	Mass	High risk	LCIS
5^a	52	CA	Pre	No	No	No	No	LCIS	NME	High risk	ALH
6^a	44	CA	Pre	DCIS	No	No	No	DCIS	NME	Staging	ALH
7^a	52	CA	Pre	No	No	No	No	DCIS	NME	High risk	LCIS
8^a	46	CA	Pre	IC-NST	No	No	No	LCIS	NME	Staging	ALH
9^a	61	CA	Post	No	IC-NST	No	No	ALH	NME	High risk	ALH
10^a	72	CA	Post	No	No	No	No	IC-NST	NME	High risk	ALH
11^a	41	CA	Pre	IC-NST	No	No	No	Benign	NME	Staging	ALH
12^a	51	CA	Pre	No	No	IC-NST	No	IC-NST	NME	High risk	LCIS
13^a	52	CA	Pre	No	No	No	IC-NST	Benign	Mass	BIRAD 3	ALH
14^b	77	CA	Post	No	ILC	No	No	LCIS	Mass	Staging	LCIS
15^c	49	CA	Pre	No	No	No	No	LCIS	NME	High risk	LCIS
16^c	46	CA	Pre	No	IC-NST	No	No	ALH	Mass	Staging	ALH
17^c	42	AA	Pre	No	IC-NST	No	No	Benign	Mass	Staging	LCIS
18^c	64	CA	Post	No	ILC	No	No	ALH	NME	Staging	ALH
19^d	45	CA	Pre	No	No	No	No	ALH	NME	High risk	ALH
20^d	41	CA	Pre	No	No	No	No	DCIS	NME	High risk	ALH
21^d	52	CA	Peri	No	No	No	No	ALH	NME	BI-RAD3	ALH
22^d	46	CA	Pre	No	No	No	No	LCIS	Mass	High risk	LCIS
23^d	59	CA	Post	No	No	No	No	PLCIS	NME	High risk	PLCIS
24^d	54	CA	Post	No	No	IC-NST	No	LCIS	Mass	Staging	LCIS
25^d	50	CA	Pre	IC-NST	No	No	No	IC-NST	NME	Staging	LCIS
26^d	61	CA	Post	ILC	No	No	No	ILC	Mass	Staging	LCIS
27^d	48	CA	Pre	ILC	No	No	No	ILC	NME	Staging	PLCIS
28^d	47	CA	Pre	No	IC-NST	No	No	LCIS	Mass	Staging	LCIS
29^d	63	CA	Post	No	No	No	No	DCIS	Mass	BI-RAD3	PLCIS
30^d	41	CA	Pre	No	No	No	IC-NST	DCIS	NME	Staging	LCIS
31^d	43	CA	Pre	No	No	No	IC-NST	LCIS	NME	Staging	LCIS
32^d	55	CA	Post	No	IC-NST	No	No	ALH	NME	Staging	LCIS
33^d	52	CA	Peri	No	No	No	No	ALH	Mass	BI-RAD3	LCIS
34^d	55	CA	Post	No	IC-NST	No	No	LCIS	NME	Staging	ALH

Abbreviations: AA, African American; ADH, atypical ductal hyperplasia; ALH, atypical lobular hyperplasia; CA, Caucasian American; C/C, concurrent contralateral; C/I, concurrent ipsilateral; DCIS, ductal carcinoma in situ; IC-NST, invasive carcinoma-no special type; ILC, invasive lobular carcinoma; LCIS, lobular carcinoma in situ; LN, lobular neoplasia; NME, non-mass enhancement; P/C, past contralateral; P/I, past ipsilateral; PLCIS, pleomorphic lobular carcinoma in situ.
^aRPCI.
^bMMC.
^cWU.
^dUPMC.

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