Clinicopathological and Molecular Characteristics of Pleomorphic Invasive Lobular Carcinoma

Table 1

Histological characteristics of PILC and ILC tumors.

Characteristic	PILC ()	ILC ()
ER+	19	20
PR+	10	13
HER2 IHC
0	8	10
1+	7	10
2+	4	0
Grade
1	0	6
2	10	14
3	9	0
Lymph node metastasis	7	14
Ki67 expression
Range	5-70%	1-20%
Median	25%	10%
≥15% (high expression)	16	4
21-gene recurrence score
Intermediate/high	8	2

PILC: pleomorphic invasive lobular carcinoma; ILC: invasive lobular carcinoma; ER+: estrogen receptor positive; PR+: progesterone receptor positive.